Tesis sobre el tema "Solar cell"
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Tan, Bertha. "Nanorod solar cell". Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/42160.
Texto completoIncludes bibliographical references (p. 68-70).
The crude oil supply crisis the world is facing today along with the disastrous global warming caused primarily as a result the green house gases, has heightened the need for an eco-friendly and renewable energy technology. Solar cells, with their ability to convert the free and gigantic energy supply of the sun into electricity, are one such attractive choice. In this thesis, a study of the use of new technologies for enhanced solar cell performance based on conversion efficiency is carried out by first understanding the mechanism of selected major solar cell types, followed by an analysis of external or internal factors that affect their performance. One new technology under investigation to boost solar cell efficiency is the introduction of nanorod/wire structures into existing designs. This report discusses this approach in detail, highlighting beneficial characteristics offered and also looking into the structure realization through advanced nanostructure processing techniques. Finally, having a complete technology background at hand, various potential markets for new solar cell technologies are examined.
by Bertha Tan.
M.Eng.
Gruber, Malte. "Solar Cell Simulator". Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-200619.
Texto completoSengil, Nevsan. "Solar cell concentrator system". Thesis, Monterey, California: U.S. Naval Postgraduate School, 1986. http://hdl.handle.net/10945/22111.
Texto completoHammarlund, Tomas, Jesper Sundin y Johan Kövamees. "Solar Cell Powered Boat". Thesis, Uppsala universitet, Institutionen för teknikvetenskaper, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-326109.
Texto completoWhyburn, Gordon Patrick. "A simple organic solar cell". Pomona College, 2007. http://ccdl.libraries.claremont.edu/u?/stc,21.
Texto completoNagata, Shinobu. "ELECTROSPUN POLYMER-FIBER SOLAR CELL". VCU Scholars Compass, 2011. http://scholarscompass.vcu.edu/etd/2566.
Texto completoFalsgraf, Erika S. "Biologically-Derived Dye-Sensitized Solar Cells: A Cleaner Alternative for Solar Energy". Scholarship @ Claremont, 2012. http://scholarship.claremont.edu/pomona_theses/61.
Texto completoSchumacher, Jürgen Otto. "Numerical simulation of silicon solar cells with novel cell structures". [S.l. : s.n.], 2000. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB9170598.
Texto completoSaj, Damian y Izabela Saj. "Nanowire-based InP solar cell materials". Thesis, Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-19455.
Texto completoRosenberg, Glenn Alan 1960. "Monolithic series connected solar cell array". Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/276950.
Texto completoYasin, Tursunjan. "Transparent Antennas for Solar Cell Integration". DigitalCommons@USU, 2013. https://digitalcommons.usu.edu/etd/1762.
Texto completoAl, ghzaiwat Mutaz. "Fabrication and study of solar cell modules based on silicon nanowire based radial junction solar cells". Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLX101/document.
Texto completoIn this thesis, we have used a low-temperature plasma-enhanced chemical vapor deposition (PECVD) reactor to fabricate Si nanowire radial junction solar mini-modules on 5x5 cm2 glass substrates with the assistance of the laser scribing technique for the series connection of the cells.We have used fluorine-doped tin oxide (FTO) deposited on soda-lime glass substrates (SLG) as a back contact as well as the source of the Sn catalyst which was formed by a direct reduction of FTO using a H2 plasma. Subsequently, p-type SiNWs were grown using plasma-assisted vapor liquid solid (VLS) process, followed by the deposition of intrinsic a-Si:H and n-type µc-SiOx:H layers to achieve pin radial junction solar cells. We have obtained an energy conversion efficiency of 6.3 % with an active area of solar cells of 0.126 cm2, which is to our knowledge, the highest efficiency obtained based on FTO layers as a source of Sn catalyst.Laser scribing was used to perform a selective removal of thin-film materials in order to fabricate minimodules. With laser scribing, a monolithic series connection between adjacent RJ SiNW solar cells on the same glass substrate was achieved. In particular, the laser scribing system has been used to perform selective removal of FTO thin-film and RJ SiNWs, which are commonly known as step P1 and P2, respectively, and to perform a final scribe to isolate the active region from the rest of the substrate. The transparent top ITO contact was sputtered and cell stripes were defined using the lift-off technique (step P3).We have carried out a detailed study of the P2 laser scribe obtained with either green (532 nm) or IR (1064 nm) laser setups. The power of the laser has to be controlled as it has a direct impact on the removal of SiNW RJs and it can damage the underneath FTO contact. We have found that the scribing using a green laser produces a partial melting outside the scribed spots, unlike the IR laser which provides a cleaner scribing and less crystallized material at the edges of scribed spots. Mapping of the scribed spots using Raman spectroscopy allowed analyzing the material composition within the scanned area inside the craters left by the laser pulses. We have demonstrated that the use of the IR laser is preferable for P2 scribing because it can provide a high-quality series connection between cells.Finally, the optimized 10 cm2 SiNW RJ mini-module has reached an energy conversion efficiency of 4.37 % with power generation of 44 mW, thanks to the improved P2 laser scribing and the dense Ag grid printed using the ink-jet method. This performance represents, to the best of our knowledge, the highest reported power generation for silicon nanowire-based solar modules on glass substrates
Yu, Lihong y 于利红. "Electron transfer study for selected dye sensitized solar cell and polymer solar cell by time-resolved spectroscopy". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/206455.
Texto completopublished_or_final_version
Chemistry
Doctoral
Doctor of Philosophy
Anil, Kumar R. "Measurement Of Solar Cell AC Parameters Using Impedance Spectroscopy". Thesis, Indian Institute of Science, 2000. https://etd.iisc.ac.in/handle/2005/203.
Texto completoAnil, Kumar R. "Measurement Of Solar Cell AC Parameters Using Impedance Spectroscopy". Thesis, Indian Institute of Science, 2000. http://hdl.handle.net/2005/203.
Texto completoSlade, Alexander Mason Electrical Engineering UNSW. "Boron tribromide sourced boron diffusions for silicon solar cells". Awarded by:University of New South Wales. Electrical Engineering, 2005. http://handle.unsw.edu.au/1959.4/21850.
Texto completoClick, Kevin A. "Design and Synthesis of Organic Dyes for Solar Energy Conversion and Storage". The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1492448144094887.
Texto completoVilpponen, Eirik Timo Bøe. "Analysis of Intermediate Band Solar Cell Performance". Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for fysikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-14090.
Texto completoMohammadi, Farid. "A Meta-Analysis on Solar Cell Technologies". Thesis, Mittuniversitetet, Avdelningen för elektronikkonstruktion, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-32584.
Texto completoCahlenstein, Alexander. "Transparent solar cell techniques: A profitability study". Thesis, Uppsala universitet, Elektricitetslära, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-341645.
Texto completoSmith, Kevin J. "Naval Postgraduate School Solar Cell Array Tester". Thesis, Monterey, California. Naval Postgraduate School, 2010. http://hdl.handle.net/10945/4990.
Texto completoEducating space professionals is an expensive endeavor. The use of technologies such as CubeSats can cut the cost giving space professionals real world experience in satellite design, testing, integration and operations. The Naval Postgraduate School-Solar Cell Array Tester (NPS-SCAT) will be the first of what may be many CubeSats developed by the Space Systems Academic Group, Small Satellite Laboratory. This thesis analyzes the NPS-SCAT program from the program managers point of view and provides an overview of the development of the program from an un-qualified Engineering Design Unit (EDU) to a fully qualified EDU. Also included in this thesis is a description of the subsystems and full cost analysis that covers the total costs from concept to flight unit.
Brooks, Clarence A. "Network model of a concentrator solar cell". Virtual Press, 1989. http://liblink.bsu.edu/uhtbin/catkey/562781.
Texto completoDepartment of Physics and Astronomy
Bryan, Kevin D. "Computer modeling of a concentrator solar cell". Virtual Press, 1989. http://liblink.bsu.edu/uhtbin/catkey/543982.
Texto completoDepartment of Physics and Astronomy
Koletsios, Evangelos. "GaAs/InAs multi quantum well solar cell". Thesis, Monterey, California. Naval Postgraduate School, 2012. http://hdl.handle.net/10945/27856.
Texto completoWong, David Allen. "Assessment of the micromorph tandem solar cell". Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/112503.
Texto completoCataloged from PDF version of thesis.
Includes bibliographical references (pages 68-72).
The bringing of high efficiency photovoltaics from extraterrestrial applications to terrestrial ones has begun to be realized. The micromorph tandem solar cell shows great promise as it boasts both high efficiency and low cost. The device consists of an amorphous top cell and a microcrystalline bottom cell. Optimization through high-rate silicon deposition, light trapping, and film growth make efficiencies of 15% possible. Current micromorph cells in the market are competitive in performance and cost to other similar technologies. This paper reviews the research progress and market penetration of this young but promising technology.
by David Allen Wong.
M. Eng.
Geary, Elaine A. M. "Transition metal complexes as solar cell dyes". Thesis, University of Edinburgh, 2005. http://hdl.handle.net/1842/12198.
Texto completoJons, Mattias. "Doped 3C-SiC Towards Solar Cell Applications". Thesis, Linköpings universitet, Halvledarmaterial, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-148595.
Texto completoPark, Jihong. "Electrical properties of polycrystalline solar cell silicon". Case Western Reserve University School of Graduate Studies / OhioLINK, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=case1061389017.
Texto completoTobail, Osama. "Porous silicon for thin solar cell fabrication". Aachen Shaker, 2008. http://d-nb.info/992052904/04.
Texto completoChiou, Jia-Wei y 邱嘉威. "Perovskite Solar Cell". Thesis, 2015. http://ndltd.ncl.edu.tw/handle/57794764966117330445.
Texto completo國立臺灣科技大學
化學工程系
103
Due to own the tunable band gap, high absorption coefficient (1.54x104 cm-1), low non-radiation carrier recombination and long carrier diffusion length, organic-inorganic hybrid perovskite materials received significant attention by many researchers in recent. There are many researchers used organic-inorganic hybrid perovskite materials as light-harvesting materials for solar cells. However, the perovskite materials is not stable in the ambient because it is very sensitive for the humidity and oxygen. Therefore, the performance of perovskite solar cells often affected by the deposition method, annealing temperature… In this study, perovskite solar cells were fabricated inside the glove box under low humidity and oxygen content. For the structure of perovskite solar cells, titanium dioxide (TiO2) nanoparticles were used to construct the mesoporous structural layer. Perovskite light harvesting materials were coated on the TiO2 structural layer via two steps process. Firstly, PbI2, CH3NH3I and hole transport medium (HTM) were coated sequentially via spin coating. Then the metal electrode was deposited by thermal evaporation. From this study, we could observe that the coating method would affect the morphologies of perovskite material and influence the performance of solar cells. In this study, the performance of perovskite solar cell fabricated by the optimal conditions can achieve Jsc=21.3 mA/cm2, Voc=0.99 V, FF=0.69, PCE=14.42 %.
Liu, Li-Ting y 留麗婷. "Research and Development Dye Sensitized Solar Cell and Perovskite Solar Cells". Thesis, 2016. http://ndltd.ncl.edu.tw/handle/14702528770787260979.
Texto completo中原大學
化學研究所
104
Solar cell research and development from 1954 to the first generation is now in its third generation dye-sensitized solar cell, however, due to the low absorption coefficient of the organic dye and the absorbance spectrum narrow, can not effectively get solar energy, so that the photoelectric conversion efficiency can not go beyond the first generation of conventional silicon solar cells. To compensate for the dye absorption spectrum of sunlight defects, particularly a quantum dot solar cells can be improved photovoltaic characteristics such problems. However, quantum dot solar cells with quantum dots using different materials, for example thirty-five (III-V) family of quantum dot solar cells will be connected to the surface of the electron hole easy to complex, resulting in decreased conductive element; or metal sulfide materials have chemical instability and other issues to be improved. To overcome these problems the quantum dot material, perovskite type lead halide sensitized material i.e. propose to do to resolve the policy. And then opened a new type of perovskite solar cells. In this paper, the development and application of the dye-sensitized solar cells and solar cell perovskite do for discussion.
Wang, Hsiang-Cheng y 王翔正. "Investigation of Tandem Polymer Solar Cell and Graphene Cathode Inverted Solar Cell". Thesis, 2017. http://ndltd.ncl.edu.tw/handle/x35hr9.
Texto completo國立臺灣大學
光電工程學研究所
105
In this thesis, several ways of surface modification are investigated. Tandem polymer solar cells and single junction solar cells with graphene as cathode are successfully fabricated via surface modification. The performance of solar cells and the property change after surface modification are carefully studied. In the first topic, we discuss the candidate materials for tandem solar cell. Single junction solar cells are optimized based on our front cell and rear cell material. Interconnection layer is then discussed. In order to let interconnection layer be coated on active layer, two commonly-used surface modification methods, UV-Ozone and O2 plasma, are introduced. Tandem solar cells are carefully designed and put into experiment. Devices are successfully fabricated with PCE of 5.129%. The surface properties of polymer film after UV-Ozone and O2 plasma pretreatment are further investigated. The reasons for poor performance of UV-Ozone-modified devices are found In the second topic, a single junction solar cell based on graphene cathode is fabricated. Hydrophobicity of graphene is improved with the aid of HBC-6ImBr. Three layers of graphene are transferred on glass substrate as cathode, and PCE of 3.515% is achieved based on PTB7:PC71BM.
Jiang, Ming-jhe y 江銘哲. "Melanin-Sensitized Solar Cell". Thesis, 2010. http://ndltd.ncl.edu.tw/handle/91000616733029716213.
Texto completo國立中正大學
物理所
98
At present the majority dye-sensitized solar cell research all uses the Ruthenium-complex as a light harvester. But the preparation cost is excessively high, and besides provides and does not have other uses for the dye-sensitized solar cell use. In order to improve such question, this research used the melanin which the human body and the most biology had to regard the dye to catch the photon.The melanin met several requirements to be possible to do as a light harvester: originates,low cost , to have strong, broad band absorbance, has conformed to the green energy industry which in the last few years. This research uses the P25 titanium dioxide by the doctor blade method for the electrode, the melanin uses electrochemically synthesized on the titanium dioxide, the electrolyte uses I-/I3- to dissolve in MPN, uses the electrode preparation platinum thin film for counter-electrode, uses solar simulator to measure efficiency at AM 1.5 (100 mW/cm2). The experiment successfully makes the overall efficiency nearly 0.3% in melanin-sensitized solar cell, then the 0.1% efficiency. In addition, the experiment discovery, the electrochemically synthesized causes the melanin particle unable to adsorb evenly on the titanium dioxide; The time of electrochemically synthesized will affect the efficiency, will cause the photon to be unable to transfer successfully, therefore for the high efficiency is how to improve the melanin particle size and thickness.
Yeh, Chieh-Yung y 葉介永. "Si Nanopillar Solar Cell". Thesis, 2012. http://ndltd.ncl.edu.tw/handle/99655507009890525679.
Texto completo國立聯合大學
材料科學工程學系碩士班
101
Nanopillars have been suggested to enhance the performance and to reduce the fabrication cost of solar cells by their higher light-trapping area, lower surface reflection and shorter diffusion length for minor carrier. In this thesis, we report a process with I-line lithography to efficiently fabricate nanopillar array with pillar diameter down to less than 400 nm. Various nanostructures including trapezoid, pillar and pencil were obtained by controlling the etching time. In addition, ion implantation was adopted for shallow junction depth, and transparent ITO electrode was used as the conformal top electrode on the surface of nanopillar. To compare the photoelectronic properties of nanostructure, we also prepare a planar device as the reference. The results show that the photoelectronic properties of all the nanostructure are better than that of planar one because of their lower reflectance and enhanced carrier collection efficiency. The efficiency of 1-μm-height nanopillar device was 7.2%, much better than that of planer ITO/Si/Al solar cell (2.1%) in this study.
Liu, Hung-Wei y 劉宏韋. "Si Nanograss Solar Cell". Thesis, 2012. http://ndltd.ncl.edu.tw/handle/bbk7yb.
Texto completo國立聯合大學
材料科學工程學系碩士班
101
Abstract Si nanograss prepared by inductively coupled hydrogen plasma is characterized with high-specific area and low reflection, which may benefit to the applications of solar cell. In this thesis, we fabricated solar cell devices with nanograss to investigate their photovoltaic behavior. Spinning on phosphorus doping (P509 dopant from Filmtronics) with various thermal processes were used for PN junction formation. ITO and Ag thin film was adopted as the top and bottom electrode, respectively. For deeper-junction photovoltaic cells, 0.47 V open circuit voltage, 13.25 mA/cm2 short circuit current density, and 64.16% fill factor were obtained, which made the conversion efficiency of 3.1%. For shallow junction cell, the maximum efficiency was only 1.08% with a higher short-circuit current density of 16.35 mA/cm2, but the external quantum efficiency can be up to 70%. The results of field emission scanning electron microscopy and secondary ion mass spectrometry analysis show that poor interface between nanograss and ITO and deep junction depth led to the low PV efficiency. Modulating the substrate resistance and reducing surface defects are suggested to improve the efficiency in the future.
Fu-ChinYang y 楊富欽. "Tandem solar cell with TCO structure of amorphous and microcrystalline silicon solar cell". Thesis, 2010. http://ndltd.ncl.edu.tw/handle/53237792001475295985.
Texto completo國立成功大學
光電科學與工程研究所
98
The topic of this research is silicon film deposited at low temperature based on Laser-assisted Plasma-Enhanced Chemical Vapor Deposition system (LAPECVD) to become amorphous and microcrystal silicon film. Because of specially high absorption of silane to CO2 laser, laser beam is guided into chamber during deposition of silicon film to form p-type, intrinsic and n-type silicon film at low temperature, and further investigate the porosity、optical and electrical property、quality of crystallization based on varying laser power assistance. As to application, amorphous silicon is very suitable to form solar cell because of ultra high absorption coefficient compared to single-crystal silicon. However, amorphous silicon would degrade at a longer term luminance. Therefore, the LAPECVD system could supply better quality of silicon thin film to overcome this weakness. This research fabricated solar cell under laser assistance, for efficiency of solar cell without laser assistance is 6.04%, 7.01% for laser assistant solar cell, and final efficiency is up to 7.13% for tandem solar cell. In conclusion, laser assistance technology is benefit for enhance efficiency of solar cell.
Lin, Jin-Tai y 林金泰. "Decay Mechanism of Perovskite Solar Cell and Development of Lead-free Perovskite Solar Cells". Thesis, 2017. http://ndltd.ncl.edu.tw/handle/43wua4.
Texto completo國立臺灣大學
化學研究所
106
Initially, we investigated the degradation of perovskite solar cells under operating situations through in situ X-ray diffraction and in situ X-ray absorption spectroscopies, which revealed that lead hydroxide iodide (PbIOH), a new phase that has not previously been identified as the degradation product of perovskite solar cells, was formed as an end decomposition product inside the cell. The formation of PbIOH could break the interface inside and be the key reason behind the problem of reduced cell life. In second part, we replaced the lead perovskite in carbon-electrode based solar cell with tin perovskite. In third part, we use a zwitterion additive to improve the film morphology of tin perovskite active layer by retarding nucleation process, and the efficiency of corresponding solar cells with 4 cm2 area can achieve 2.1%. In addition, the additive also significantly enhances the stability of device. The final part is about tin perovskite quantum material. We have successfully prepared tin perovskite nanoplate which demonstrates excellent quantum yield of 6.4%, narrow full width at half maximum (FWHM) of 37 nm, and wide tunability window.
Zin, Ngwe Soe Josh. "Miniature silicon solar cells for a tandem cell stack". Phd thesis, 2010. http://hdl.handle.net/1885/150204.
Texto completoChen, Shen-Lin y 陳申霖. "Advanced CIGS Solar Cell Fabrication". Thesis, 2008. http://ndltd.ncl.edu.tw/handle/35256634596888222361.
Texto completo國立臺灣海洋大學
光電科學研究所
96
The purpose of this thesis is to develop a different procedure to frabriate CIGS solar cell using single target. After depositing the CIGS film on the substrate and annealing the film through Rapid Thermal Processing (RTP), we observed the impact on crystal size with the heating degree and heating time. In the literature review, it is well-known that the efficiency of CIGS solar cell is the most competitive as compared with other thin film solar cell. Moreover, the advantages of the fabrication of CIGS solar cell by sputtering are lower cost and ability of mass production. Then, we use Scanning Electron Microscopy (SEM) to investigate the crystal size, and Energy Dispersive Spectrometer (EDS) to analyze the composition of crystal whether it is accordance with the target. Furthermore, we observe that the higher temperature, the smaller crystal size is; and the longer heating time, the completed structure is. Due to the limitations, we need further support to investigate the relationship.
Wen, Kuo Yu y 郭鈺雯. "Development of Solar Cell Applications". Thesis, 2013. http://ndltd.ncl.edu.tw/handle/00449123099254517619.
Texto completo大葉大學
工學院碩士在職專班
101
The issues of environmental consciousness and clean energy are getting more important nowadays. Among them, there is no doubt that the use of solar energy catches more attention around the world. Scientists from Bell Labs invented the solar cell in 1954 and created a new revenue stream via its solar cell business. As so far, there are several different kinds of solar cells, including silcon based, thin film and new concept. However, solar photovoltaic cells have more production costs than other energy. Therefore, many governments fund subsidies to help the solar photovoltaic industries and encourage them to make big savings on costs through greater conversion efficiency of solar photovoltaic cells. Nowadays the use of solar photovoltaic cells plays an important role in every one’s daily life. Therefore, solar photovoltaic industries focus on building integrated photovoltaic (BIPV) . And they can be connected to many other industries, such as agriculture, fisheries and Animal husbandry in Taiwan. Besides, high concentration photovoltaic (HCPV) have been mainly introduced in large solar photovoltaic power plants. Based on the profound foundation of the semiconductor industry and the largest amount of concentrator photovoltaic equipment, called metal-organic chemical vapor deposition system in the world, Taiwan’s solar photovoltaic industries definitely take a great advantage in the future.
Kuo, Chao-Ke y 郭昭克. "Silicon Quantum Dots Solar Cell". Thesis, 2010. http://ndltd.ncl.edu.tw/handle/05717744469401540780.
Texto completoWei-Yen, Chen y 陳緯諺. "Silicon nanorod array solar cell". Thesis, 2010. http://ndltd.ncl.edu.tw/handle/81322943767633327172.
Texto completo國立臺灣師範大學
物理學系
98
In this study, solar cells consisting of ordered p-i-n junction silicon nanorod matrix array with different lengths, diameters and period were fabricated. The advantages of p-i-n nanorod structures were low reflection and high surface to volume ratio compared to planar silicon thin films. Moreover, we designed hexagonal arrays to get sufficiently dense array to gain more number of p-i-n junction. The direct electrical pathways provided by the nanorod ensure the rapid collection of carriers generated throughout the device limited primarily by the surface area of the nanrods array. And devices deposit the ITO film would supply a shorter carrier diffusion length to enhance the photocurrent. Finally, we present that the p-i-n nanorod of matrix and hexagonal array structure solar cell actually improve the power conversion efficiency up to 10%, and had an excellent antireflection performance of optical. After depositing the ITO film, it enhances the nanorod devices photocurrent value 18.24% (the highest).
WANG, ZIH-YU y 王子瑜. "Solar Cell Cutting Process Improvement". Thesis, 2012. http://ndltd.ncl.edu.tw/handle/18380602608789647018.
Texto completo聖約翰科技大學
自動化及機電整合研究所
100
In this research, we have made solar cells variously cutting by the two technologies of Laser MicroJet and traditional Dry Laser. For exploring which is the better manner for solar cells cutting with low loss of efficiency, the parameters of FF(Fill Factor), Rsh , and RRP(reduce rate of power) are be selected for comparison. We quartered 6-inches multi-crystalline silicon solar cell, the main cutting parameter of Laser MicroJet is to make different voltage (740~860 V) to change the energy beam of Laser, and Dry Laser’s is to control different current (12.5 ~14.5A) in that experiment’s variant control. In the last of those cutting process, solar cells have be measured by Electro Microscopy for the observation of cross-section , leveling and slag adhere to. The result of this experiment shows that the FF of Laser MicroJet cutting solar cells are about 75%, the Rsh are 12~16Ω ,and the RRP are 1.8~2.9% while the FF of Dry Laser’s are about 76%, the Rsh are above 16Ω ,and the rrp are 1.01~1.79%. Comparatively, that the cost of cutting process of Dry Laser is more cheaper and lower rrp. Laser MicroJet can cut various shapes solar cells without the effect of thermal stress, and have fine cross-section and non-broken quality. So it is better to use Water-jet guided Laser for cutting various shape solar cells. Key words: Laser MicroJet; Dry Laser; Solar cell; Thermal Stress
Kuo-Hui, Chen y 陳國輝. "Concentrator Solar Cell Welding Research". Thesis, 2011. http://ndltd.ncl.edu.tw/handle/10822694435234507044.
Texto completo國立勤益科技大學
研發科技與資訊管理研究所
99
High Concentrator Photovoltaic is to use the sun’s rays come together in a small area of improved efficiency and economic efficiency of power generation. If the use of concentrating solar concentrator lens magnification 1000 times. The solar cell module unit cost of electricity will be much lower than the crystalline silicon cell type battery. However ,the process of concentrating the heat due to long wavelength light source of the problem, it will cause damage to high temperature solar cells and power generation systems. Due to the reason for damage to package the maximum negative reasons. Also to inhibit the rate of the condenser to control the temperature, but the drawback is the efficiency of power generation. The fundamental solution lies in improved packaging process. This study was to optimized the best welding by TOPSIS. The use of Six Sigma (DMAIC) steps to define the process conditions and problems. Taguchi method to find the appropriate temperature curve. Finally, thermal cycle testing and validation of product quality. Make the process less than 5% vold. Concentrating HCPV sub-mount units to ensure long-term used, to solve industrial process bottlenecks.
Chuang, Yu-Lin y 莊郁琳. "Silicon Nanohole Arrays Solar Cell". Thesis, 2011. http://ndltd.ncl.edu.tw/handle/78167806625579841077.
Texto completo國立臺灣師範大學
物理學系
99
On Earth, solar energy is inexhaustible and non-pollution. Here, we take silicon as the materials for solar cell because of its rich reserves, the advantages of high hardness and high melting point. But, after the light incident into the planar silicon surface, there will be over 30% of them reflected and wasted. Recently, adding nanostructures on silicon surface is proposed. It will significantly reduce reflections, effectively enhance the absorption, and improve the photoelectric current and the energy conversion efficiency. Here, we add nanohole arrays structure on the surface of our solar cells, and that reduced the light reflection and increased the absorption. In addition, these nanohole structures increase the area of the p-n junction and reduce the carrier transport path, that will produce more of the carriers and more carriers are collected. Once photocurrent was increased and thus enhances the energy conversion efficiency of solar cells. The study begins at the comparison of optical reflectivity properties for the various sizes of nanohole arrays, and we discuss the impact of nanohole arrays with different structural parameters. After growing n-layer and fabricating the electrodes of components, we compare the energy conversion efficiency and the external quantum efficiency of the devices which plane structure and with nanohole arrays structure devices, respectively. That is in order to find the optimum structure parameters of silicon solar cells. We find the significantly improved of the energy conversion efficiency and the external quantum efficiency of the devices which were add nanohole arrays on the devices’ surface compare with planar devices. The best energy conversion efficiency is 10.24% and the highest external quantum efficiency is 72.8%.
Place, Alexander Patrick Mccormick. "Differential Bandgap Solar Cell Analysis". Thesis, 2017.
Buscar texto completoLiu, Te-Shang y 劉德尚. "Solar Cell Industry Management Strategy – A Case Study of the Domestic New Solar Cell Company". Thesis, 2013. http://ndltd.ncl.edu.tw/handle/48219911880300162813.
Texto completo中原大學
企業管理研究所
101
Nowadays, solar energy industry has become the one of hottest alternative energy. Solar energy industry has a rapid development because people pump much money and manpower into it. Silicon solar cell companies play an important role in this industry, especially in Taiwan. Corporations all face the life cycle of products and industries so how to response the changes of environment and market than adjust business strategy to achieve the goal of sustainable management is an important issue for them. Therefore, the research will put emphasis on analyses of case company and solar cell industry in Taiwan by SCP (Structure-Conduct-Performance paradigm). For standing out from a highly competitive market, we find the mode which can form a management strategy and also develop the competitive strategies. From the research, we can find that the manufacturers have proposed the way to deal with following seven subjects: raw materials, technology of products, attitude of business, elasticity of price, growth rate, structure of cost and the way they purchase. And the items which lacking the strategies can be proposed as following seven subjects: cycle of seasons, barriers to entry, taxes and subsidies, legislation, price regulation, behavior of pricing and strategy of products. The research will not only focus on providing suggestions for the items which lacking strategies to avoid manufacturers to be uncompetitive but propose additional notes to improve international competitiveness of case company. Suggestions are as follows. 1. Excellent capabilities of research and development 2. World-class technology and advanced equipment 3. Build the image of brand 4. Stable source of critical raw materials 5. Complete community structure of industry 6. The support of government policy
Fu, Hou Zhong y 侯忠賦. "Characterization and Hybrid Integration of the MOS-structure Solar Cell and Photovoltaic Biasing Solar Cell". Thesis, 2015. http://ndltd.ncl.edu.tw/handle/65xv8v.
Texto completo國立臺北科技大學
光電工程系研究所
103
This study demonstrated the concept of a Metal/Oxide/Semiconductor (MOS) structure for fabricating high-efficiency silion solar cell. The reflectivity and the thickness of ITO/Al2O3/TiO2 films were simulated to obtain the best optical properties. Significantly increased in photocurrent and conversion efficiency were obtained when the cell applied with a biasing voltage. The optical and electrical properties for MOS solar cell using double layer of TiO2 and Al2O3 as passivation layer are investigated. The transparent indium tin oxide (ITO) electrode was obtained using a thermally sputtering deposition. The property Metal/Double Oxide structure exhibited a good anti-reflection (AR) property and has broadband low reflectance on visible wavelength. The depletion width of p-n junction under the ITO transparent electrode would be extended more deeply and obtained more large volume of absorption when the biased voltage increased. Thus, the short-circuit current and conversion efficiency of MOS solar cell are further enhanced. In addition, the Ti/Al metal pattern was deposited on the ceramic substrates by e-beam evaporation. Finally, the MOS solar cells and the solar cells of biasing source were die-bonding and wire bonding on the ceramic substrate. Therefore, MOS-structure and photovoltaic biasing solar cell were hybrid integrated on a ceramic substrate. In the selection of the material and the thickness of the space layer, the cell with a 20 nm TiO2 space layer has the best performance having low reflectance and low leakage current. Under AM1.5G illumination and at temperatures of 25°C, the characteristics of the fabricated cell are characterized in following stages. (1) Bare solar cell: The open-circuit voltage (Voc) of 0.55 V, short-circuit current density (Jsc) of 26.22 mA/cm2 and conversion efficiency (η) of 10.61 % are presented. (2) Solar cell coated with TiO2 (15 nm) and Al2O3 (5 nm) layer:Voc of 0.55 V, Jsc of 29.38 mA/cm2 and η of 11.82 % are obtained. (3) Solar cell coated with TiO2 (15 nm), Al2O3 (5 nm) and ITO layer (50 nm):Voc of 0.55 V, Jsc of 33.53 mA/cm2 and η of 13.58% are obtained. (4) Solar cell coated with TiO2 (15 nm)/Al2O3 (5 nm)/ITO layer (50 nm) and ITO electrode biased at + 3.75 V:Voc is increased from 0.55 V to 0.56 V, Jsc is increased to 53.11 mA/cm2, and η is increased to 20.05 %. Besides, the capacitance-voltage (C-V) of MOS-structure silicon solar cell was measured to confirm the depletion width as a function of the biasing voltage.
WU, CHIA-CHUN y 伍家俊. "A Study on Shading Effect of Solar Cell and Electroluminescent Technique for Solar Cell Inspection". Thesis, 2018. http://ndltd.ncl.edu.tw/handle/vghh44.
Texto completo國立勤益科技大學
電子工程系
106
The solar electrical power is more useful and important issue for green requirements today. In this study, we investigate the shaded effects for various kinds of solar modules. In addition, there are various types of solar cell defects in fabrication. Various defects of solar cell might lower the photoelectron transformation efficiency. Among these defects, micro cracks occurring in the interior of solar wafers are most crucial. In normal lighting intensity, micro cracks of solar cell is difficult to detect or visible. Currently, the most common method to detect invisible micro crack in solar cell is used by electroluminescence (EL) technique. In this study, based on crystalline silicon solar cells we investigate electro characteristics such as open voltage (Voc) and short-circuit current (Isc) after EL test of cell. In addition, we also develop an EL image inspection system for roughly evaluation in normal area of the solar cell under test. However, this is an experimental prototyping system, the accuracy of micro cracks detection for solar cell is still depended on the quality of EL image and test instruments settings.
WU, WENCHAO y 伍文超. "Simulation of Cu(In,Ga)Se solar cells and cell-to-module gain for silicon solar cells". Thesis, 2014. http://ndltd.ncl.edu.tw/handle/88096112361224304692.
Texto completo國立臺灣大學
電子工程學研究所
103
Modeling of photovoltaic devices has become more and more important and helpful not only to predict the performance of new devices but also to provide ideas and guidelines to industry without manufacture. This thesis focuses on discussing the optical and electrical characteristics of Cu(In,Ga)Se (CIGS) solar cells, as well as the cell-to-module current gain. The CIGS solar cell is simulated in two-dimensional simulation. In chapter two, the electrical and optical simulation of the CIGS and Cu(In,Ga)(Se,S) (CIGSeS) is done. The influence of different gallium and sulfur mole fraction is reported. The CIGS and CIGSeS solar cell achieve a optimized efficiency. The cell-to-module current gain is simulated in three-dimensional simulation. In chapter three, several kinds of module light loss are shown and as well as the current of conventional solar module. In chapter four, four improvements contain glass anti-reflective coating (ARC), front glass thickness (TG), polyvinyl butyral encapsulant (PVB), and light harvesting strings (LHS) are used to optimized the solar module. The individual and combined improvement is considered, to achieve a higher current gain of the solar module.