Journal articles: 'Solar cells- Light absorption'

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Guolong Li, Guolong Li, Hongyu Zhen Hongyu Zhen, Zhuoyin Huang Zhuoyin Huang, Kan Li Kan Li, Weidong Shen Weidong Shen, and Xu Liu Xu Liu. "Silver clusters insert into polymer solar cell for enhancing light absorption." Chinese Optics Letters 10, no. 1 (2012): 012401–12403. http://dx.doi.org/10.3788/col201210.012401.

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Peter Amalathas, Amalraj, and Maan Alkaisi. "Nanostructures for Light Trapping in Thin Film Solar Cells." Micromachines 10, no. 9 (September 17, 2019): 619. http://dx.doi.org/10.3390/mi10090619.

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Thin film solar cells are one of the important candidates utilized to reduce the cost of photovoltaic production by minimizing the usage of active materials. However, low light absorption due to low absorption coefficient and/or insufficient active layer thickness can limit the performance of thin film solar cells. Increasing the absorption of light that can be converted into electrical current in thin film solar cells is crucial for enhancing the overall efficiency and in reducing the cost. Therefore, light trapping strategies play a significant role in achieving this goal. The main objectives of light trapping techniques are to decrease incident light reflection, increase the light absorption, and modify the optical response of the device for use in different applications. Nanostructures utilize key sets of approaches to achieve these objectives, including gradual refractive index matching, and coupling incident light into guided modes and localized plasmon resonances, as well as surface plasmon polariton modes. In this review, we discuss some of the recent developments in the design and implementation of nanostructures for light trapping in solar cells. These include the development of solar cells containing photonic and plasmonic nanostructures. The distinct benefits and challenges of these schemes are also explained and discussed.

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He, Jinna, Chunzhen Fan, Junqiao Wang, Yongguang Cheng, Pei Ding, and Erjun Liang. "Plasmonic Nanostructure for Enhanced Light Absorption in Ultrathin Silicon Solar Cells." Advances in OptoElectronics 2012 (November 5, 2012): 1–8. http://dx.doi.org/10.1155/2012/592754.

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The performances of thin film solar cells are considerably limited by the low light absorption. Plasmonic nanostructures have been introduced in the thin film solar cells as a possible solution around this issue in recent years. Here, we propose a solar cell design, in which an ultrathin Si film covered by a periodic array of Ag strips is placed on a metallic nanograting substrate. The simulation results demonstrate that the designed structure gives rise to 170% light absorption enhancement over the full solar spectrum with respect to the bared Si thin film. The excited multiple resonant modes, including optical waveguide modes within the Si layer, localized surface plasmon resonance (LSPR) of Ag stripes, and surface plasmon polaritons (SPP) arising from the bottom grating, and the coupling effect between LSPR and SPP modes through an optimization of the array periods are considered to contribute to the significant absorption enhancement. This plasmonic solar cell design paves a promising way to increase light absorption for thin film solar cell applications.

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Jiang, Weiwen, and Xi Chen. "Light absorption enhancement in ultrathin perovskite solar cells using plasmonic light trapping and bionic anti-reflection coating." AIP Advances 12, no. 6 (June 1, 2022): 065106. http://dx.doi.org/10.1063/5.0092059.

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Perovskite solar cells have attracted much attention due to their easy fabrication, low cost, and high photoelectric conversion efficiency. To reduce pollution, the absorption layer thickness of perovskite solar cells should be reduced. Moreover, the ultrathin layer can effectively depress the electron–hole recombination in the process of carrier transfer. However, the light absorption of the ultrathin perovskite solar cell is not satisfactory. The promising pathways to design absorption-enhanced ultrathin perovskite solar cells are plasmonic light trapping and anti-reflection coating. In this paper, we propose a design for the light absorption enhancement of ultrathin solar cells with a 100 nm perovskite layer through the integration of plasmonic structure arrays and moth-eye textured anti-reflection coatings. Due to the plasmonic scattering and the antireflection effect, an optimized light absorption enhancement of 41% has been achieved, compared with a 100 nm blank layer. In this case, a silver cylindrical array with a radius of 100 nm, a height of 120 nm, and a coverage of 12% is embedded into the rear-side hole transport layer. Inverted pyramids of the moth-eye textures with a base length of 180 nm and a depth of 125 nm are located on the front surface of the antireflection coating and further improve the perovskite light absorption. The absorbance of the 100 nm layer is dramatically raised to 72.51%, which is comparable to that of a 300 nm perovskite layer (72.86%). The simulation results pave the way for the realization of environmental-friendly and high-performance perovskite optoelectronic devices.

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Tahersima, Mohammad Hossein, and Volker J. Sorger. "Strong Photon Absorption in 2-D Material-Based Spiral Photovoltaic Cells." MRS Advances 1, no. 59 (2016): 3915–21. http://dx.doi.org/10.1557/adv.2016.19.

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ABSTRACTAtomically thin transition-metal dichalcogenides (TMD) hold promise for making ultrathin-film photovoltaic devices with a combination of excellent photo-absorption and mechanical flexibility. However, reported absorption for photovoltaic cells based on TMD materials is still just a few percent of the incident light due to their sub-wavelength thickness leading to low cell efficiencies. Here we discuss that taking advantage of the mechanical flexibility of two dimensional (2D) materials by rolling their Van der Waal heterostructures such as molybdenum disulfide (MoS2)/graphene (Gr)/hexagonal boron nitride (hBN) to a spiral solar cell, leads to strong light matter interaction allowing for solar absorptions up to 90%. The optical absorption of a 1 µm-long hetero-material spiral cell consisting of the aforementioned hetero stacks is about 50% stronger compared to a planar MoS2 cell of the same thickness; although the volumetric absorbing material ratio is only 6%. We anticipate these results to provide guidance for photonic structures that take advantage of the unique properties of 2D materials in solar energy conversion applications.

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Karim, Mohammad Rezaul, Muhammad Ali Shar, and Syed Abdullah. "Mixed Dyes for Dye-sensitized Solar Cells Applications." Current Nanoscience >15, no. 5 (July 19, 2019): 501–5. http://dx.doi.org/10.2174/1573413715666190325165613.

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Background: Energy crisis is a vital issue worldwide and it will be increased tremendously in future. Alternative energy sources have been sought for the betterment of the future world. Solar energy is an alternative energy resource with plenty of opportunities. To make user- friendly and cheaper solar cells, dye-sensitized solar cells are tried to develop in this aspect. Objective: Single dye is not good enough to capture a wide range of solar light. The blending of different dyes is an alternative approach to harvest a wider range of solar lights on solar cells. Here, N719 and IR dyes were utilized to get UV-VIS and NIR ranges of solar lights in dye-sensitized solar cells. Methods: Dye-sensitized solar cells (DSSCs) were fabricated by using mixed dyes with various combinations of N719 (dye A) and IR dyes (dye B). The mixed dyes solutions were adsorbed on titanium dioxide (TiO2) and revealed significant light absorption & photosensitization compared with the individual dye solutions. The DSSCs fabricated with more percentage of IR dyes exhibited the best sensitization and broader spectrum. Results: The light absorption spectrum of the blended dyes solutions was confined peaks resultant of both N719 and IR dyes. The maximum efficiencies of 7.91% and 7.77% were obtained with 70% and 80% of IR dyes, respectively. Conclusion: Both N719 and IR mixed dyes solar cells were fabricated successfully for the first time. The relevant reasons behind the working of N719 and IR mixed dyes solar cells have been discussed. It was also noted that only IR dyes sensitized cells did not function under the simulated sunlight.

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Nakayama, Keisuke, Katsuaki Tanabe, and Harry A. Atwater. "Plasmonic nanoparticle enhanced light absorption in GaAs solar cells." Applied Physics Letters 93, no. 12 (September 22, 2008): 121904. http://dx.doi.org/10.1063/1.2988288.

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Kupec, Jan, Ralph L. Stoop, and Bernd Witzigmann. "Light absorption and emission in nanowire array solar cells." Optics Express 18, no. 26 (December 15, 2010): 27589. http://dx.doi.org/10.1364/oe.18.027589.

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Alaeian, Hadiseh, Ashwin C. Atre, and Jennifer A. Dionne. "Optimized light absorption in Si wire array solar cells." Journal of Optics 14, no. 2 (January 12, 2012): 024006. http://dx.doi.org/10.1088/2040-8978/14/2/024006.

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Yang, Jianjun, Jiaxuan Liu, Yaxin Li, Xiaobao Yu, Zichuan Yi, Zhi Zhang, Feng Chi, and Liming Liu. "A DSSC Electrolyte Preparation Method Considering Light Path and Light Absorption." Micromachines 13, no. 11 (November 9, 2022): 1930. http://dx.doi.org/10.3390/mi13111930.

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The electrolyte is one of the key components of dye-sensitized solar cells’ (DSSC) structure. In this paper, the electrolyte formulation of a new DSSC with external photoanode structure was studied. Based on the idea that the electrolyte should match the light absorption and light path, iodine series electrolytes with different concentrations were configured and used in the experiment. The results showed that the external photoanode structure solar cells assembled with titanium electrode had the best photoelectric conversion ability when the concentration of I2 was 0.048 M. It achieved the open circuit voltage of 0.71 V, the short circuit current of 8.87 mA, and the filling factor of 57%.

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Chiu, Nan-Fu, Cheng-Hung Hou, Chih-Jen Cheng, and Feng-Yu Tsai. "Plasmonic Circular Nanostructure for Enhanced Light Absorption in Organic Solar Cells." International Journal of Photoenergy 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/502576.

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This study attempts to enhance broadband absorption in advanced plasmonic circular nanostructures (PCN). Experimental results indicate that the concentric circular metallic gratings can enhance broadband optical absorption, due to the structure geometry and the excitation of surface plasmon mode. The interaction between plasmonic enhancement and the absorption characteristics of the organic materials (P3HT:PCBM and PEDOT:PSS) are also examined. According to those results, the organic material's overall optical absorption can be significantly enhanced by up to~51% over that of a planar device. Additionally, organic materials are enhanced to a maximum of 65% for PCN grating pitch = 800 nm. As a result of the PCN's enhancement in optical absorption, incorporation of the PCN into P3HT:PCBM-based organic solar cells (OSCs) significantly improved the performance of the solar cells: short-circuit current increased from 10.125 to 12.249 and power conversion efficiency from 3.2% to 4.99%. Furthermore, optimizing the OSCs architectures further improves the performance of the absorption and PCE enhancement.

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Liu, Wang Lin, Guan Yu Lin, and Hsiharng Yang. "A Study of the Simulation of a Light Trapping Module for Increasing the Absorption Efficiency of Solar Cells." Applied Mechanics and Materials 437 (October 2013): 198–201. http://dx.doi.org/10.4028/www.scientific.net/amm.437.198.

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This study proposed a light trapping module to improve the light path in a solar cell in order to increase its light absorption efficiency. The microlens on a transparent substrate concentrates incident light into several light beams, which it leads into the optical channel on the back side. The optical channel is designed by coating highly reflective metals on the same transparent substrate, then an optical channel opening is made at the light beam focus so the light beams can pass through the optical channel and irradiate the solar cell. The light reflected by the solar cell is reflected again by the metal surface to the upper film of the solar cell, thus, increasing the absorption efficiency of the solar cell and reducing the film thickness of the solar cell to obtain better electrical properties. In this simulation the refractive index of the microlens was set as 1.43, the optical channel was 25 μm and the spacing was 0.27 mm, thus, the simulated absorption efficiency reached over 80%. The feasibility of this study was thus proved.

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Minnaert, Ben, and Peter Veelaert. "The Suitability of Organic Solar Cells for Different Indoor Conditions." Advances in Science and Technology 74 (October 2010): 170–75. http://dx.doi.org/10.4028/www.scientific.net/ast.74.170.

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Most commercially available photovoltaic solar cells are crystalline silicon cells. However, in indoor environments, the efficiency of Si-cells is poor. Typically, the light intensity under artificial lighting conditions is less than 10 W/m² as compared to 100-1000 W/m² under outdoor conditions. Moreover, the spectrum is different from the outdoor solar spectrum and there is more diffuse than direct light. Taken into account the predicted cheaper costs for the production of organic solar cells, a possible niche market for organic PV can be indoor applications. In this article, we study the properties and suitability of several bulk heterojunction organic solar cells (with distinct different absorption spectra) for different indoor conditions. We simulate different light environments and use a silicon solar cell as reference. Depending on the required power for the indoor device, we determine minimum requirements for the environment (light intensity and indoor spectrum) and for the organic solar cell (absorption spectrum and surface area). In this way we determine the appropriateness and conditions for a competitive indoor use of organic solar cells.

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An, Qiaoshi, Fujun Zhang, Jian Zhang, Weihua Tang, Zhenbo Deng, and Bin Hu. "Versatile ternary organic solar cells: a critical review." Energy & Environmental Science 9, no. 2 (2016): 281–322. http://dx.doi.org/10.1039/c5ee02641e.

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Ternary organic solar cells enjoy both the enhanced light absorption by incorporating multiple organic materials in tandem solar cells and the simplicity of processing conditions that are used in single bulk heterojunction solar cells.

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Thrithamarassery Gangadharan, Deepak, Zhenhe Xu, Yanlong Liu, Ricardo Izquierdo, and Dongling Ma. "Recent advancements in plasmon-enhanced promising third-generation solar cells." Nanophotonics 6, no. 1 (January 6, 2017): 153–75. http://dx.doi.org/10.1515/nanoph-2016-0111.

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AbstractThe unique optical properties possessed by plasmonic noble metal nanostructures in consequence of localized surface plasmon resonance (LSPR) are useful in diverse applications like photovoltaics, sensing, non-linear optics, hydrogen generation, and photocatalytic pollutant degradation. The incorporation of plasmonic metal nanostructures into solar cells provides enhancement in light absorption and scattering cross-section (via LSPR), tunability of light absorption profile especially in the visible region of the solar spectrum, and more efficient charge carrier separation, hence maximizing the photovoltaic efficiency. This review discusses about the recent development of different plasmonic metal nanostructures, mainly based on Au or Ag, and their applications in promising third-generation solar cells such as dye-sensitized solar cells, quantum dot-based solar cells, and perovskite solar cells.

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Zeng, Qiang, Na Meng, Yulong Ma, Han Gu, Jing Zhang, Qingzhu Wei, Yawei Kuang, Xifeng Yang, and Yushen Liu. "Two-Dimensional Modeling of Silicon Nanowires Radial Core-Shell Solar Cells." Advances in Condensed Matter Physics 2018 (2018): 1–7. http://dx.doi.org/10.1155/2018/7203493.

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Silicon nanowires radial core-shell solar cells have recently attracted significant attention as promising candidates for low cost photovoltaic application, benefit from its strong light trapping, and short radial carrier collection distances. In order to establish optics and electricity improvement, a two-dimensional model based on Shockley-Read-Hall recombination modes has been carried out for radial core-shell junction nanowires solar cell combined with guided resonance modes of light absorption. The impact of SiNWs diameter and absorption layer thickness on device electrical performance based on a fixed nanowires height and diameter-over-periodicity were investigated under illumination. The variation in quantum efficiency indicated that the performance is limited by the mismatch between light absorption and carriers’ collection length.

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Mohammadpour, Arash, Samira Farsinezhad, Ling-Hsuan Hsieh, and Karthik Shankar. "Multipodal and Multilayer TiO2 Nanotube Arrays: Hierarchical Structures for Energy Harvesting and Sensing." MRS Proceedings 1552 (2013): 29–34. http://dx.doi.org/10.1557/opl.2013.584.

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AbstractOur ability to fabricate multipodal and multilayer TiO2 nanotube arrays enables us to increase performance and functionality in light harvesting devices such as excitonic solar cells and photocatalysts. Using a combination of simulations and experiments, we show that multilayer nanotube arrays enable photon management in the active toward enhancing the absorption and utilization of incident light. We show that the simultaneous utilization of TiO2 nanotubes with large (∼450 nm) and small (∼80 nm) diameters in stacked multilayer films increased light absorption and photocurrent in solar cells. Such enhanced light absorption is particularly desirable in the near-infrared region of the solar spectrum in which most excitonic solar cells suffer from poor quantum efficiencies and for blue photons at the TiO2 band-edge where significant room exists for improvement of photocatalytic quantum yields. Under AM 1.5 one sun illumination, multilayer nanotube arrays afforded us an approximately 20% improvement in photocurrent over single layer nanotube array films of the same thickness for N-719 sensitized liquid junction solar cells. Also, the possibility of multipodal TiO2 nanotube growth with different electrolyte recipes is presented.

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Yi, Yasha, Wei Guo, and Yueheng Peng. "Enhancement of light trapping for thin film solar cells." MRS Advances 4, no. 13 (December 27, 2018): 743–48. http://dx.doi.org/10.1557/adv.2018.637.

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ABSTRACTLight trapping is one of the key challenges for next generation thin film solar cells. In this work, we have identified the distinct light trapping effects for short and long wavelength solar spectrum range, by investigating lighting trapping structures on both sides of Si thin film solar cells. The sub-wavelength photonic front surface by wet etching and multi-layer photonic crystal reflector on the bottom surface are studied in detail for its solar energy absorption characteristics. Our study reveals the drastic difference of the light trapping effects within the solar spectrum wavelength. This work may provide guidance for the efficiency enhancementfor next generation thin film photovoltaic cells.

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Zhou, Lin, Yuwei Xu, Shuyu Tan, Meijie Liu, and Yong Wan. "Simulation of Amorphous Silicon Carbide Photonic Crystal Absorption Layer for Solar Cells." Crystals 12, no. 5 (May 5, 2022): 665. http://dx.doi.org/10.3390/cryst12050665.

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In this work, the amorphous silicon carbide (a-SiC) with low cost and high extinction coefficient was used as the light absorption layer of solar cells, and the photonic crystal (PC) structure and defect structure were introduced. By optimizing the scatterer shape, structural parameters and defect types of photonic crystal, the absorption efficiency of the light absorption layer was further improved. The results show that the photonic crystal absorption layer with vacancy line defect is better than the perfect photonic crystal absorption layer. Meanwhile, the absorption efficiency of the photonic crystal absorption layer significantly improves in the case that the scatterer is an elliptical cylindrical air hole scatterer. When the incident light is in the wavelength range of 0.30~0.80 μm and the absorption layer height is 0.60 μm, the absorption efficiency of the absorption layer can reach 95.60%. Compared with the absorption layer without photonic crystal structure, the absorption layer is increased by 43.24%. At the same time, the absorption layer has little dependence on the incidence angle of sunlight. When the incidence angle is 65°, the absorption efficiency is still higher than 80%.

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Fan, Bin, Ylenia Maniglio, Marina Simeunovic, Simon Kuster, Thomas Geiger, Roland Hany, and Frank Nüesch. "Squaraine Planar-Heterojunction Solar Cells." International Journal of Photoenergy 2009 (2009): 1–7. http://dx.doi.org/10.1155/2009/581068.

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The photovoltaic performance of squaraine-based organic solar cells is investigated. Two squaraine derivatives with extraordinarily high extinction coefficients are used as electron donors in bilayer heterojunctions with fullereneC60as electron acceptor. Due to the very strong squaraine absorption band in the red spectral domain, antibatic behavior due to light filtering is observed in the photocurrent spectrum for film thicknesses of 35 nm to 40 nm. At reduced film thicknesses of 20 nm, this filtering effect at maximum absorption can be alleviated and power conversion efficiencies under simulated AM 1.5 full sun irradiation of 0.59% and 1.01% are obtained for the two squaraine derivatives, respectively. The photovoltaic properties of these cells are investigated with respect to electrode materials and chemical doping.

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H. MALK, Fatima, Alyaa Abdul Hasan ABDUL KAREM, and E. H. Al – TEMEME. "ORGANIC SOLAR CELLS: SHORT REVIEW." MINAR International Journal of Applied Sciences and Technology 4, no. 4 (December 1, 2022): 174–81. http://dx.doi.org/10.47832/2717-8234.13.16.

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On the earth's surface, the sun is a source of light energy. Electrical energy was produced when solar energy was converted into free energy charged within the particles of some materials. Organic solar cells (OSCs) have gotten a lot of attention because of their advantages like low cost and flexibility. It is semi-transparent, non- toxic, and ideal for mass production. OSCs with high-performance active layer, electrode, and interfacial materials have made significant progress, as have novel device architectures. In particular, active layer material innovation allows for the possibility of achieving high performance in OSC by using absorbent materials; polymers are commonly used as absorbent layers to induce light absorption efficiency and device performanc. Keywords: Organic Solar Cells, Donor Layers, Acceptor Layers, Stability Of Solar Cells

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Abdoul-Latif, Mouna Mohamed, Jia Xu, Jian Xi Yao, and Song Yuan Dai. "Au Nanoparticles Doped TiO₂ Mesoporous Perovskite Solar Cells." Materials Science Forum 896 (March 2017): 18–25. http://dx.doi.org/10.4028/www.scientific.net/msf.896.18.

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The incorporation of metal nanoparticles is not a new method, but remains a method not enough investigated in perovskite solar cells. Many others studies about organometal halide perovskite have been done to improve thin film photovoltaic devices efficiencies. This enhancement has been due to materials purity, surface passivation or surface area adsorbent but the main enhancement has been either by fast electron extraction or light harvester which allowed increasing the Photocurrent Density (Jsc). In many literatures, we find that Plasmon effect can improve the absorption of solar cells. In this study we used a sol-gel method to incorporate metal nanoparticles into TiO2 in perovskite solar cells and we investigated the absorption, interface matters and efficiency with gold nanoparticles (Au NPs) doped TiO2 perovskite solar cells. We consider they are many parameters that may have an effect on light absorption in perovskite solar cells using Au NPs doped TiO2, but the most enhancements are done either by reducing exciton binding energy or by a better crystalline surface.

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Das, Narottam, Devanandh Chandrasekar, Mohammad Nur-E-Alam, and M. Masud K. Khan. "Light Reflection Loss Reduction by Nano-Structured Gratings for Highly Efficient Next-Generation GaAs Solar Cells." Energies 13, no. 16 (August 14, 2020): 4198. http://dx.doi.org/10.3390/en13164198.

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This paper mainly focuses on increasing the conversion efficiency of GaAs solar cells by reducing the light reflection losses. The design of nano-structured gratings and their light trapping performance are modelled and optimised by using the finite-difference time-domain (FDTD) method. The sunlight directly impinges on the solar panel or cells, then a portion of the incident sunlight reflects back to the air from the surface of the panel, thus leading to a reduction in the light absorption capacity of the solar cells. In order to proliferate the light absorption capacity of solar cells nano-grating structures are employed, as they are highly capable of capturing the incident sunlight compared to a conventional (or flat type) solar cell, which results in generating more electrical energy. In this study, we design three different types of nano-grating structures, optimise their parameters and their performance in light capturing capacity. From the simulation results, we confirm that that it is possible to reduce light reflection losses up to 27%, by using the nano-grating structures, compared to conventional type solar cells. This reduction of reflection losses helps to improve the conversion efficiency of next-generation GaAs solar cells significantly for a sustainable green Earth.

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Imahori, Hiroshi. "Porphyrins as Potential Sensitizers for Dye-Sensitized Solar Cells." Key Engineering Materials 451 (November 2010): 29–40. http://dx.doi.org/10.4028/www.scientific.net/kem.451.29.

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Recently, dye-sensitized solar cells have attracted much attention relevant to global environmental issues. So far ruthenium(II) bipyridyl complexes have proven to be the most efficient TiO2 sensitizers in dye-sensitized solar cells. However, the highest power conversion efficiency has been stagnated in recent years. More importantly, considering that ruthenium is rare and expensive, novel dyes without metal or using inexpensive metal are desirable for highly efficient dye-sensitized solar cells. To fulfill the requirement, it is crucial to develop inexpensive novel dyes that exhibit high efficiencies in terms of light-harvesting, charge separation, and charge collection. Porphyrins are important classes of potential sensitizers for highly efficient dye-sensitized solar cells owing to their photostability and potentially high light-harvesting capabilities that would allow applications in thinner, low-cost dye-sensitized solar cells. However, typical porphyrins possess an intense Soret band at 400 nm and moderate Q bands at 600 nm, which does not match solar energy distribution on the earth. Therefore, the unmatched light-harvesting property relative to the ruthenium complexes has limited the cell performance of porphyrin-sensitized TiO2 cells. Elongation of the -conjugation and loss of symmetry in porphyrins cause broadening and red-shift of the absorption bands together with an increasing intensity of the Q bands relative to that of the Soret band. On the basis of the strategy, the cell performance of porphyrin-sensitized solar cells has been improved remarkably by the enhanced light absorption. The efficiency of porphyrin-sensitized solar cells could be improved significantly if the dyes with larger red and near-infrared absorption could be developed.

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Li Guo-Long, He Li-Jun, Li Jin, Li Xue-Sheng, Liang Sen, Gao Mang-Mang, and Yuan Hai-Wen. "Light absorption enhancement in polymer solar cells with nano-Ag." Acta Physica Sinica 62, no. 19 (2013): 197202. http://dx.doi.org/10.7498/aps.62.197202.

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Duché, D., C. Masclaux, J. Le Rouzo, and C. Gourgon. "Photonic crystals for improving light absorption in organic solar cells." Journal of Applied Physics 117, no. 5 (February 7, 2015): 053108. http://dx.doi.org/10.1063/1.4906848.

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Chen, Yuqing, Moneim Elshobaki, Zhuo Ye, Joong-Mok Park, Max A. Noack, Kai-Ming Ho, and Sumit Chaudhary. "Microlens array induced light absorption enhancement in polymer solar cells." Physical Chemistry Chemical Physics 15, no. 12 (2013): 4297. http://dx.doi.org/10.1039/c3cp50297j.

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Wang, Wei, Shaomin Wu, Kitt Reinhardt, Yalin Lu, and Shaochen Chen. "Broadband Light Absorption Enhancement in Thin-Film Silicon Solar Cells." Nano Letters 10, no. 6 (June 9, 2010): 2012–18. http://dx.doi.org/10.1021/nl904057p.

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Yu, Zongfu, and Shanhui Fan. "Angular constraint on light-trapping absorption enhancement in solar cells." Applied Physics Letters 98, no. 1 (January 3, 2011): 011106. http://dx.doi.org/10.1063/1.3532099.

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Duche, David, Philippe Torchio, Ludovic Escoubas, Florent Monestier, Jean-Jacques Simon, François Flory, and Gérard Mathian. "Improving light absorption in organic solar cells by plasmonic contribution." Solar Energy Materials and Solar Cells 93, no. 8 (August 2009): 1377–82. http://dx.doi.org/10.1016/j.solmat.2009.02.028.

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Granero, P., V. S. Balderrama, J. Ferré-Borrull, J. Pallarès, and L. F. Marsal. "Light absorption modeling of ordered bulk heterojunction organic solar cells." Current Applied Physics 13, no. 8 (October 2013): 1801–7. http://dx.doi.org/10.1016/j.cap.2013.07.016.

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Yang, Xiaohan, Ashraf Uddin, and Matthew Wright. "Plasmon enhanced light absorption in bulk heterojunction organic solar cells." physica status solidi (RRL) - Rapid Research Letters 6, no. 5 (April 16, 2012): 199–201. http://dx.doi.org/10.1002/pssr.201206099.

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Li, Donghui, Xue Zhang, Dan Liu, and Tao Wang. "Aggregation of non-fullerene acceptors in organic solar cells." Journal of Materials Chemistry A 8, no. 31 (2020): 15607–19. http://dx.doi.org/10.1039/d0ta03703f.

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Shan, Feng, Tong Zhang, and Sheng-Qing Zhu. "Effects of Ag Nanocubes with Different Corner Shape on the Absorption Enhancement in Organic Solar Cells." Journal of Nanomaterials 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/827658.

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The effects of corner shape of silver (Ag) nanocubes (NCs) on optical absorptions of organic solar cells (OSCs) are theoretically investigated by finite element method (FEM) calculations. The absorption of sun light in the active layer is calculated. Significant absorption enhancements have been demonstrated in metallic region with different shapes of Ag NCs, among them corner radius (R) is zero result in the best light absorption performance of up to 55% enhancement with respect to bare OSCs. The origins of increased absorption are believed to be the effects of the huge electric field enhancement and increased scattering upon the excitation of localized surface plasmon resonance (LSPR). Apart from usingR=0, we show thatR=3, 6, and 11.29 of Ag NCs in metallic region of active layer may also result in the maximum comparable absorption enhancement of 49%, 41%, and 28%, respectively. In addition, a significant effect of the period of NCs is observed.

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Suntola, T. "CdTe Thin-Film Solar Cells." MRS Bulletin 18, no. 10 (October 1993): 45–47. http://dx.doi.org/10.1557/s088376940003829x.

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Cadmium telluride is currently the most promising material for high efficiency, low-cost thin-film solar cells. Cadmium telluride is a compound semiconductor with an ideal 1.45 eV bandgap for direct light-to-electricity conversion. The light absorption coefficient of CdTe is high enough to make a one-micrometer-thick layer of material absorb over 99% of the visible light. Processing homogenous polycrystalline thin films seems to be less critical for CdTe than for many other compound semiconductors. The best small-area CdTe thin-film cells manufactured show more than 15% conversion efficiency. Large-area modules with aperture efficiencies in excess of 10% have also been demonstrated. The long-term stability of CdTe solar cell structures is not known in detail or in the necessary time span. Indication of good stability has been demonstrated. One of the concerns about CdTe solar cells is the presence of cadmium which is an environmentally hazardous material.

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Wang, Jiaming. "Comparison of development prospects between silicon solar cells and perovskite solar cells." Highlights in Science, Engineering and Technology 27 (December 27, 2022): 512–18. http://dx.doi.org/10.54097/hset.v27i.3808.

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The development history, preparation process, structure and working principle of silicon solar cells and perovskite solar cells are introduced. The main parameters and production processes of the two kinds of solar cells are compared. The advantages and disadvantages of perovskite solar energy compared with existing solar cells in market application are analyzed and summarized, including good light absorption, high energy conversion efficiency and simple process flow, The problems of cost, size and stability of perovskite solar cells in market application are pointed out and the solutions are given. Perovskite solar cells have an excellent development prospect. Short circuit voltage, open circuit current and efficiency exceed those of silicon solar cells and are expected to gradually replace silicon solar cells in the market.

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Suemune, Ikuo. "Enhanced light absorption in thin-film solar cells with light propagation direction conversion." Optics Express 21, S3 (April 25, 2013): A539. http://dx.doi.org/10.1364/oe.21.00a539.

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SHEN Hong-jun, 沈宏君, 李. 婷. LI Ting, 卢辉东 LU Hui-dong, 黄仙健 HUANG Xian-jian, and 李新兰 LI Xin-lan. "Enhancement of Light Absorption in Thin Film Silicon Solar Cells with Light Traping." Chinese Journal of Luminescence 37, no. 7 (2016): 816–22. http://dx.doi.org/10.3788/fgxb20163707.0816.

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Pakhuruddin, Mohd Zamir, and Nur Afidah Md. Noor. "Ray Tracing of Thin PERC Silicon Solar Cells with Cone Textures." Key Engineering Materials 930 (August 31, 2022): 3–8. http://dx.doi.org/10.4028/p-1me3ip.

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Thinning of crystalline silicon (c-Si) wafer is a promising approach to reduce the technology cost of passivated emitter rear cell (PERC) solar cell. However, reducing the wafer thickness compromises light absorption, hence short-circuit current density (Jsc) in the solar cell. This necessitates effective light trapping in the device. In this work, upright cone textures are incorporated on the surface of 50 μm PERC monocrystalline silicon solar cell. SunSolve ray tracer is used to simulate the optical and electrical properties of the solar cell within 300-1200 nm wavelength region. Besides, the solar cell is also simulated with a front silicon nitride (SiNx) anti-reflective coating (ARC) on the cone textures. From the results, the thin PERC solar cell with cone textures and SiNx ARC demonstrates Jsc of up to 38.8 mA/cm2 and conversion efficiency of 20.4%. This is a significant performance improvement when compared to the planar cell, with Jsc of 25.1 mA/cm2 and efficiency of 13.1%. The improvement is attributed to the enhanced broadband light absorption and increased external quantum efficiency in the device.

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Milliron, Delia J., Ilan Gur, and A. Paul Alivisatos. "Hybrid Organic–Nanocrystal Solar Cells." MRS Bulletin 30, no. 1 (January 2005): 41–44. http://dx.doi.org/10.1557/mrs2005.8.

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AbstractRecent results have demonstrated that hybrid photovoltaic cells based on a blend of inorganic nanocrystals and polymers possess significant potential for low-cost, scalable solar power conversion. Colloidal semiconductor nanocrystals, like polymers, are solution processable and chemically synthesized, but possess the advantageous properties of inorganic semiconductors such as a broad spectral absorption range and high carrier mobilities. Significant advances in hybrid solar cells have followed the development of elongated nanocrystal rods and branched nanocrystals, which enable more effective charge transport. The incorporation of these larger nanostructures into polymers has required optimization of blend morphology using solvent mixtures. Future advances will rely on new nanocrystals, such as cadmium telluride tetrapods, that have the potential to enhance light absorption and further improve charge transport. Gains can also be made by incorporating application-specific organic components, including electroactive surfactants which control the physical and electronic interactions between nanocrystals and polymer.

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Sedao, Xxx, Rémi Torres, Thierry Sarnet, Philippe Delaporte, and Marc Sentis. "Laser Textured Black Silicon Solar Cells with Improved Efficiencies." Advanced Materials Research 321 (August 2011): 240–45. http://dx.doi.org/10.4028/www.scientific.net/amr.321.240.

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Femtosecond laser irradiation of silicon has been used for improving light absorption at its surface. In this work we demonstrate the successful implementation of femtosecond laser texturisation to enhance light absorption at Si solar cell surface. In order to adapt this technology into solar industry, the texturisation process is carried out in air ambient. The microstructure similar to what has been produced in vacuum can be made in air by using appropriate laser conditions. The texturised surface shows excellent optical properties with a reflectivity down to 7% without crystalline orientation dependence. Junction formation and metallisation proceeded after texturisation. Suns-Voc measurements are performed to evaluate the cell performance and decent electrical characteristics have been achieved.

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Biswas, Rana, Chun Xu, Sambit Pattnaik, Joydeep Bhattacharya, Nayan Chakravarty, and Vikram Dalal. "Photonic and plasmonic crystal based enhancement of solar cells- overcoming the Lambertian classical 4n2 limit." MRS Proceedings 1426 (2012): 137–47. http://dx.doi.org/10.1557/opl.2012.1097.

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ABSTRACTLong wavelength photons in the red and near infrared region of the spectrum are poorly absorbed in thin film silicon cells, due to their long absorption lengths. Advanced light trapping methods are necessary to harvest these photons. The basic physical mechanisms underlying the enhanced light trapping in thin film solar cells using periodic back reflectors include strong diffraction coupled with light concentration. These will be contrasted with the scattering mechanisms involved in randomly textured back reflectors, which are commonly used for light trapping. A special class of conformal solar cells with plasmonic nano-pillar back reflectors will be described, that generates absorption beyond the classical 4n2 limit (the Lambertian limit) averaged over the entire wavelength range for nc-Si:H. The absorption beyond the classical limit exists for common 1 micron thick nc-Si:H cells, and is further enhanced for non-normal light. Predicted currents exceed 31 mA/cm2 for nc-Si:H. The nano-pillars are tapered into conical protrusions that enhance plasmonic effects. Such conformal nc-Si:H solar cells with the same device architecture were grown on periodic nano-hole, periodic nano-pillar substrates and compared with randomly textured substrates, formed by annealing Ag/ZnO or etched Ag/ZnO. The periodic back reflector solar cells with nano-pillars demonstrated higher quantum efficiency and higher photo-currents that were 1 mA/cm2higher than those for the randomly textured back reflectors. Losses within the experimental solar architectures are discussed.

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Zhou, Ziyou, Wenfeng Liu, Yan Guo, Hailong Huang, and Xiaolong Ding. "Design Simulation and Optimization of Germanium-Based Solar Cells with Micro-Nano Cross-Cone Absorption Structure." Coatings 12, no. 11 (October 31, 2022): 1653. http://dx.doi.org/10.3390/coatings12111653.

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In this paper, germanium-based solar cells were designed based on germanium (Ge) materials, and the cross-cone (CC) nanostructures were used as the absorber layer of the solar cells. The optical path inside the absorber layer was increased by microstructure reflection, thereby increasing the absorption efficiency of the germanium-based solar cell. The reflectivity, transmittance, electric field and magnetic field of the corresponding position of the device were simulated and calculated by the finite difference time domain (FDTD) method. By simulating doping and simulating the external potential difference, the short-circuit current density (JSC), open-circuit voltage (VOC), output power and photoelectric conversion efficiency (η) of the device were calculated. The study found that for the entire study wavelength range (300–1600 nm), the transmittance of the device was close to none, and the average light absorption rate under air mass 1.5 global (AM1.5G) was 94.6%. In the light wavelength range from 310 nm to 1512 nm with a width of 1201 nm, the absorption rate was greater than 90%, which is in line with the high absorption of the broadband. Among them, the absorption rate at 886 nm reached 99.84%, the absorption rate at 1016 nm reached 99.89%, and the absorption rate at 1108 nm reached 99.997%, which is close to full absorption. By exploring the electrical performance of the device under different Ge nanostructure parameters, a germanium-based solar cell device under the nanocross-cone absorption structure array with both high-efficiency light absorption and excellent electrical performance was finally obtained. The study shows that the VOC of its single-junction cell was 0.31 V, JSC reached 45.5 mA/cm2, and it had a fill factor (FF) of 72.7% and can achieve a photoelectric conversion efficiency of 10.3%, surpassing the performance of most Ge solar cells today.

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Duan, Jialong, Huihui Zhang, Qunwei Tang, Benlin He, and Liangmin Yu. "Recent advances in critical materials for quantum dot-sensitized solar cells: a review." Journal of Materials Chemistry A 3, no. 34 (2015): 17497–510. http://dx.doi.org/10.1039/c5ta03280f.

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Quantum dot-sensitized solar cells (QDSCs) present promising cost-effective alternatives to conventional silicon solar cells due to their distinctive properties such as simplicity in fabrication, possibility to realize light absorption in wide solar spectrum regions, and theoretical conversion efficiency up to 44%.

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Chen, Fei, Xinghua Zhan, Mengyu Gao, Shengnian Tie, and Wei Gao. "Anti-reflective microstructure array and its performance evaluation in thin film flexible solar cells." Modern Physics Letters B 31, no. 19-21 (July 27, 2017): 1740001. http://dx.doi.org/10.1142/s0217984917400012.

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The anti-reflective (AR) structure greatly reduces the light reflection. When it is applied on solar cells, it enables more light to be absorbed by the cells, increasing the energy of the incident light and improving the light-to-electricity conversion efficiency. In this study, the optical properties of AR microstructures are investigated followed by the performance evaluation of solar cells. The AR microstructure is arrayed in a uniform and periodic fashion. When it is applied on PMMA, only 1.0% of the light is reflected away while 2.6% of the light is reflected on glass. The angular dependence performance is also improved with AR structure with 9.4% more light absorption, which can increase the effective energy generation duration for the solar cell. The AR structure is applied to amorphous silicon thin film solar cells by nano-imprinting technology. The solar cell with AR structure gained 8.63% more power compared to the conventional solar cells.

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Pereyra, Carlos Javier, Florencia Ferrer, Carmela Gómez, Lucía Campo, Ricardo Enrique Marotti, Francisco Martin, Dietmar Leinen, José Ramos-Barrado, and Enrique Ariel Dalchiele. "Optical absorption enhancement in sensitized ZnO nanorods for solar cells." Matéria (Rio de Janeiro) 20, no. 3 (September 2015): 747–56. http://dx.doi.org/10.1590/s1517-707620150003.0079.

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ABSTRACTThe Optical Properties of ZnO Nanorods (NR) sensitized with different semiconductors in Core-Shell nanostructures were studied, comparing them with those of bare ZnO NR. Experimental measurements of Transmittance and Diffuse Reflectance show an increased light absorption at the solar spectrum and the appearances of new absorption edges (AE). The measurements are compared with numerical simulations based on Bruggeman Effective Medium Approximation. An increased absorption with the sensitizer content is observed. For similar changes in filling fractions, CdTe presents higher changes in absorption than CdS. Shifts in the AE are observed experimentally (e.g. between 2.34 eV and 2.66 eV for CdS). These shifts cannot be assigned to sensitizer content or confinement effects. A similar behaviour is observed for CdTe in which the AE measured by transmittance is between 1.31 eV and 1.36 eV, while the one obtained from Kubelka-Munk analysis of reflectance is, for the same samples, 1.57 eV and 1.49 eV, respectively. Moreover, the split-off AE is also observed at 2.55 eV and 2.28 eV. The observed large red-shifts could be associated with an enhancement of the subbandgap absorption due to an increase in the light free path at the core-shell nanostructure.

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Ghahremanirad, Elnaz, Saeed Olyaee, and and Maryam Hedayati. "The Influence of Embedded Plasmonic Nanostructures on the Optical Absorption of Perovskite Solar Cells." Photonics 6, no. 2 (March 31, 2019): 37. http://dx.doi.org/10.3390/photonics6020037.

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The interaction of light with plasmonic nanostructures can induce electric field intensity either around or at the surface of the nanostructures. The enhanced intensity of the electric field can increase the probability of light absorption in the active layer of solar cells. The absorption edge of perovskite solar cells (PSCs), which is almost 800 nm, can be raised to higher wavelengths with the help of plasmonic nanostructures due to their perfect photovoltaic characteristics. We placed plasmonic nanoparticles (NPs) with different radii (20–60 nm) within the bulk of the perovskite solar cell and found that the Au nanoparticles with a radius of 60 nm increased the absorption of the cell by 20% compared to the bare one without Au nanoparticles. By increasing the radius of the nanoparticles, the total absorption of the cell will increase because of the scattering enhancement. The results reveal that the best case is the PSC with the NP radius of 60 nm.

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Fadakar Masouleh, Farzaneh, Narottam Das, and Seyed Rozati. "Nano-Structured Gratings for Improved Light Absorption Efficiency in Solar Cells." Energies 9, no. 9 (September 19, 2016): 756. http://dx.doi.org/10.3390/en9090756.

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Sameshima, Toshiyuki, Hitomi Nomura, Shinya Yoshidomi, and Masahiko Hasumi. "Multi junction solar cells using band-gap induced cascaded light absorption." Japanese Journal of Applied Physics 53, no. 5S1 (April 22, 2014): 05FV07. http://dx.doi.org/10.7567/jjap.53.05fv07.

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Colombo, Carlo, Peter Krogstrup, Jesper Nygård, Mark L. Brongersma, and Anna Fontcuberta i. Morral. "Engineering light absorption in single-nanowire solar cells with metal nanoparticles." New Journal of Physics 13, no. 12 (December 16, 2011): 123026. http://dx.doi.org/10.1088/1367-2630/13/12/123026.

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Journal articles on the topic 'Solar cells- Light absorption'

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