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Journal articles on the topic 'Indoor photovoltaics'

Author: Grafiati

Published: 29 March 2025

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1

Ryu, Hwa Sook, Song Yi Park, Tack Ho Lee, Jin Young Kim, and Han Young Woo. "Recent progress in indoor organic photovoltaics." Nanoscale 12, no. 10 (2020): 5792–804. http://dx.doi.org/10.1039/d0nr00816h.

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Organic photovoltaics are a promising candidate for indoor applications. Recent progresses in optimization of indoor photovoltaic materials and devices, and the key strategies to optimize the indoor photovoltaic characteristics will be discussed.

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2

Chen, Chun-Hao, Zhao-Kui Wang, and Liang-Sheng Liao. "Perspective on perovskite indoor photovoltaics." Applied Physics Letters 122, no. 13 (March 27, 2023): 130501. http://dx.doi.org/10.1063/5.0147747.

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The concept of the Internet of Things (IoT) is a future development opportunity for mankind, which is a system that realize the interaction of various electronic devices through wireless communication. With the rise and development of this concept, the energy demand gap of self-powered equipment in IoT has emerged. The construction of an off-grid power system will make the wireless network of IoT easy to integrate and meet the higher requirements of power supply equipment in terms of size, weight, energy-consumption, and cost. Indoor photovoltaics (IPVs) can provide stable and long-term power guarantee by collecting indoor light, which are perfectly matched with IoT. Photovoltaic cells based on a-silicon, dye, organic compounds, and halide perovskite have been proved to be suitable for IPVs. Among them, perovskite indoor photovoltaics (PIPVs) have attracted much attention due to its advantages of tunable bandgap, high output voltage, flexible preparation, and low cost. In addition, the indoor stability and toxicity of PIPVs are also discussed in this Perspective.

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3

Zhang, Yue, Chunhui Duan, and Liming Ding. "Indoor organic photovoltaics." Science Bulletin 65, no. 24 (December 2020): 2040–42. http://dx.doi.org/10.1016/j.scib.2020.08.030.

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4

Aoki, Yoichi. "Photovoltaic performance of Organic Photovoltaics for indoor energy harvester." Organic Electronics 48 (September 2017): 194–97. http://dx.doi.org/10.1016/j.orgel.2017.05.023.

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5

Wang, Peng, Wei Wang, Ling Jia, Chenglong Wang, Wendi Zhang, and Lei Huang. "APPLICATION ANALYSIS OF PHOTOVOLTAIC INTEGRATED SHADING DEVICES CONSIDERING INDOOR ENVIRONMENT AND ENERGY CHANGE IN GREEN BUILDINGS." Journal of Green Building 19, no. 3 (August 1, 2024): 71–90. http://dx.doi.org/10.3992/jgb.19.3.71.

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ABSTRACT Constructing solar-powered cities with photovoltaic panels installed on building façades saves energy and reduces carbon emissions. Since photovoltaic integrated shading devices (PVSDs) differ from rooftop photovoltaics, their design must consider power generation capacity, indoor thermal environment, and lighting control to maximise the energy-saving potential. This study simulates and evaluates the performance of PVSDs combined lighting control in energy-efficient buildings based on EnergyPlus and addresses the conflict between the indoor environment and photovoltaic power generation by optimising the geometric parameters of photovoltaic systems in China's hot summer and cold winter (HSCW) zones. The findings indicate that the combined lighting control mitigates the detrimental effects of PVSDs on lighting, and the design optimisation makes it possible to acquire positive shading benefits and significantly boost the performance of PVSDs, thus saving more energy than rooftop photovoltaics. The maximum energy-saving rate of a room with 12.5% of its façade wall utilised reached 49.295%. This study provides an example of the practical application and evaluation of PVSDs in HSCW zones.

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Peng, Yueheng, Tahmida N. Huq, Jianjun Mei, Luis Portilla, Robert A. Jagt, Luigi G. Occhipinti, Judith L. MacManus‐Driscoll, Robert L. Z. Hoye, and Vincenzo Pecunia. "Indoor Photovoltaics: Lead‐Free Perovskite‐Inspired Absorbers for Indoor Photovoltaics (Adv. Energy Mater. 1/2021)." Advanced Energy Materials 11, no. 1 (January 2021): 2170005. http://dx.doi.org/10.1002/aenm.202170005.

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7

Kim, Soyeon, Muhammad Jahandar, Jae Hoon Jeong, and Dong Chan Lim. "Recent Progress in Solar Cell Technology for Low-Light Indoor Applications." Current Alternative Energy 3, no. 1 (November 28, 2019): 3–17. http://dx.doi.org/10.2174/1570180816666190112141857.

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Photovoltaic cells have recently attracted considerable attention for indoor energy harvesting for low-power-consumption electronic products due to the rapid growth of the Internet of Things (IoT). The IoT platform is being developed with a vision of connecting a variety of wireless electronic devices, such as sensors, household products, and personal data storage devices, which will be able to sense and communicate with their internal states or the external environment. A self-sustainable power source is required to power such devices under low light indoor environments. Inorganic photovoltaic cells show excellent device performance under 1 Sun illumination and dominate the market for outdoor applications. However, their performance is limited for indoor applications with low incident light intensities as they exhibit low photo-voltage. Among the emerging photovoltaic technologies, organic photovoltaics have unique advantages, including solution processibility, flexibility, and lightweight tailorable design; hence, they are considered the best solution for indoor light harvesting applications due to their high photo-voltage, strong absorption of UV-visible wavelengths, and a spectral response similar to that emitted by modern indoor lighting systems. In this review article, we discuss the factors affecting device performance of different photovoltaic technologies under low incident light intensities or indoor conditions and provide a comprehensive analysis of future opportunities for enhancing indoor performance of the photovoltaic devices. Furthermore, we discuss some of the results of semi-transparent organic solar cell which operated under complex environmental conditions like low illumination, incident light angle etc. Based on the results, one can suggest that semi-transparent organic solar cell is a more suitable case for progressive indoor solar cell. After highlighting the factors that limit indoor device performance of photovoltaic cells, we discuss potential applications of IoT devices powered by organic photovoltaic cells in indoor lighting environments.

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Alkhalayfeh, Muheeb Ahmad, Azlan Abdul Aziz, Mohd Zamir Pakhuruddin, Khadijah Mohammedsaleh M. Katubi, and Neda Ahmadi. "Recent Development of Indoor Organic Photovoltaics." physica status solidi (a) 219, no. 5 (December 26, 2021): 2100639. http://dx.doi.org/10.1002/pssa.202100639.

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9

Feng, Mingjie, Chuantian Zuo, Ding-Jiang Xue, Xianhu Liu, and Liming Ding. "Wide-bandgap perovskites for indoor photovoltaics." Science Bulletin 66, no. 20 (October 2021): 2047–49. http://dx.doi.org/10.1016/j.scib.2021.07.012.

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10

Ziuku, Sosten, and Edson L. Meyer. "Electrical performance results of an energy efficient building with an integrated photovoltaic system." Journal of Energy in Southern Africa 21, no. 3 (August 1, 2010): 2–8. http://dx.doi.org/10.17159/2413-3051/2010/v21i3a3254.

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A 3.8 kW rooftop photovoltaic generator has been installed on an energy efficient house built at the University of Fort Hare, Alice campus, South Africa. The system, located on the north facing roof, started generating electrical power in February 2009. In addition to providing electrical energy, the photovoltaic panels also act as the building roofing material. An instrumentation and data acquisition system was installed to record the indoor and outdoor ambient temperature, indoor and outdoor relative humidity, wind speed and direction, solar irradiance, electrical energy produced by the solar panels and the household energy consumption. This paper presents the initial results of the electrical performance of the building integrated photovoltaics (BIPV) generator and energy consumption patterns in the energy efficient house.

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11

Masoudinejad, Mojtaba. "Data-Sets for Indoor Photovoltaic Behavior in Low Lighting Conditions." Data 5, no. 2 (March 28, 2020): 32. http://dx.doi.org/10.3390/data5020032.

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Analysis of voltage–current behavior of photovoltaic modules is a critical part of their modeling. Parameter identification of these models demands data from them, measured in realistic environments. In spite of advancement in modeling methodologies under solar lighting, few analyses have been focused on indoor photovoltaics. Lack of accurate and reproducible data as a major challenge in this field is addressed here. A high accuracy measurement setup for evaluation and analysis of indoor photovoltaic modules is explained. By use of this system, different modules are measured under diverse environmental conditions. These measurements are structured in data-sets that can be used for either analysis of physical environment effects and modeling or development of specific parameter identification methods in low light intensity conditions.

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12

Vincent, Premkumar, Jae Won Shim, Jaewon Jang, In Man Kang, Philippe Lang, Jin-Hyuk Bae, and Hyeok Kim. "The Crucial Role of Quaternary Mixtures of Active Layer in Organic Indoor Solar Cells." Energies 12, no. 10 (May 15, 2019): 1838. http://dx.doi.org/10.3390/en12101838.

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A bulk heterojunction (BHJ) consisting of more than one donor/acceptor is one plausible way to improve the charge transport and/or the spectral absorption range in organic solar cells. Ternary and quaternary solar cells have shown promise in this regard. However, quaternary structures have not yet been intensively tested under indoor lighting conditions. A finite-difference time-domain (FDTD)-based simulation was used to solve for the electric field intensity distribution inside a quaternary photovoltaic device illuminated by 500 lx indoor white light emitting diodes (LEDs). We found that quaternary indoor photovoltaics (IPVs) showed peculiarly high oscillations in the simulated ideal short-circuit current density (Jsc,ideal). Here, we simulated the electric field intensity inside the photovoltaic, compared it to single BHJ photovoltaics, and deduced that the electric field intensity inside the active layer of the IPV was highly sensitive to its thickness due to interference between the incident light and the light reflecting from the back electrode. We also found that Poly[N-9′-hepta-decanyl-2,7-carbazole-alt-5,5-(4′,7′-di-2-thienyl-2′,1′,3′-benzothiadiazole)] (PCDTBT) acted as the primary light absorber in the quaternary blend while poly({4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b′]dithiophene-2,6-diyl}{3-fluoro-2-[(2-ethylhexyl)carbonyl]thieno[3,4-b]thiophenediyl}) (PTB7) acted primarily as a cascade energy level and secondarily as a supplementary light absorber.

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13

Biswas, Swarup, Yongju Lee, Hyojeong Choi, Hyeong Won Lee, and Hyeok Kim. "Progress in organic photovoltaics for indoor application." RSC Advances 13, no. 45 (2023): 32000–32022. http://dx.doi.org/10.1039/d3ra02599c.

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14

Lee, Harrison K. H., Zhe Li, James R. Durrant, and Wing C. Tsoi. "Is organic photovoltaics promising for indoor applications?" Applied Physics Letters 108, no. 25 (June 20, 2016): 253301. http://dx.doi.org/10.1063/1.4954268.

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15

Li, Meng, Femi Igbari, Zhao‐Kui Wang, and Liang‐Sheng Liao. "Indoor Thin‐Film Photovoltaics: Progress and Challenges." Advanced Energy Materials 10, no. 28 (June 9, 2020): 2000641. http://dx.doi.org/10.1002/aenm.202000641.

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16

Mularso, Kelvian T., Ji-Young Jeong, Gill Sang Han, and Hyun Suk Jung. "Recent Strategies for High-Performing Indoor Perovskite Photovoltaics." Nanomaterials 13, no. 2 (January 7, 2023): 259. http://dx.doi.org/10.3390/nano13020259.

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The development of digital technology has made our lives more advanced as a society familiar with the Internet of Things (IoT). Solar cells are among the most promising candidates for power supply in IoT sensors. Perovskite photovoltaics (PPVs), which have already attained 25% and 40% power conversion efficiencies for outdoor and indoor light, respectively, are the best candidates for self-powered IoT system integration. In this review, we discuss recent research progress on PPVs under indoor light conditions, with a focus on device engineering to achieve high-performance indoor PPVs (Id-PPVs), including bandgap optimization and defect management. Finally, we discuss the challenges of Id-PPVs development and its interpretation as a potential research direction in the field.

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17

Ho, Johnny Ka Wai, Hang Yin, and Shu Kong So. "From 33% to 57% – an elevated potential of efficiency limit for indoor photovoltaics." Journal of Materials Chemistry A 8, no. 4 (2020): 1717–23. http://dx.doi.org/10.1039/c9ta11894b.

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18

Cutting, Christie L., Monojit Bag, and D. Venkataraman. "Indoor light recycling: a new home for organic photovoltaics." Journal of Materials Chemistry C 4, no. 43 (2016): 10367–70. http://dx.doi.org/10.1039/c6tc03344j.

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19

Wajidh, Mohamed Nafeer, Nour Attallah Issa, Kam Sheng Lau, Sin Tee Tan, Chin Hua Chia, Muslizainun Mustapha, Mohammad Hafizuddin Hj Jumali, and Chi Chin Yap. "Enhancing Indoor Photovoltaic Performance of Inverted Type Organic Solar Cell by Controlling Photoactive Layer Solution Concentration." Sains Malaysiana 53, no. 10 (October 31, 2024): 3511–20. http://dx.doi.org/10.17576/jsm-2024-5310-23.

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With the development of various low-power indoor electronic devices, indoor photovoltaics, particularly organic solar cells (OSCs) have attracted a lot of interest in recent years. Increasing the light absorption and suppressing the leakage current are pivotal to improve the indoor photovoltaic performance of OSCs. In this study, the carbon quantum dots (CQDs)-incorporated photoactive layer solution concentration was varied to improve the photovoltaic performance under 1-sun and indoor white LED illumination. The photoactive layer was composed of (6,6)-phenyl-C61-butyric acid methyl ester) (PCBM) as the acceptor and poly(3-hexylthiophene) (P3HT) as the donor. The ZnO electron transport layer was deposited on fluorine-doped tin oxide (FTO)-coated glass substrates using a spin coating technique. The photoactive layers with different solution concentrations were spin coated on top of the ZnO layer. For device completion, silver anode was thermally evaporated. It is interesting to find that the optimum solution concentration obtained under white LED illumination is larger than that under 1-sun illumination. The maximum power conversion efficiency (PCE) of 0.95% was obtained under 1-sun illumination for device with the solution concentration of 36 mg/mL, whereas, under white LED illumination, the highest PCE of 3.59% was obtained for the device with solution concentration of 48 mg/mL.The discrepancy is ascribed to the higher light absorption of thicker photoactive layer and less significant charge recombination loss under weak light intensity. This study highlights the importance of using different optimization strategies to improve the photovoltaic performance of OSCs for outdoor and indoor applications.

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20

Torimtubun, Alfonsina Abat Amelenan, José G. Sánchez, Josep Pallarès, and Lluis F. Marsal. "A cathode interface engineering approach for the comprehensive study of indoor performance enhancement in organic photovoltaics." Sustainable Energy & Fuels 4, no. 7 (2020): 3378–87. http://dx.doi.org/10.1039/d0se00353k.

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21

Xu, Xiang, Wei Liu, Xiaoyan Luo, Hongbo Chen, Qingya Wei, Jun Yuan, and Yingping Zou. "An Overview of High‐Performance Indoor Organic Photovoltaics." ChemSusChem 14, no. 17 (June 26, 2021): 3428–48. http://dx.doi.org/10.1002/cssc.202100386.

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22

Park, Song Yi, Chiara Labanti, Joel Luke, Yi‐Chun Chin, and Ji‐Seon Kim. "Organic Bilayer Photovoltaics for Efficient Indoor Light Harvesting." Advanced Energy Materials 12, no. 3 (December 15, 2021): 2103237. http://dx.doi.org/10.1002/aenm.202103237.

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23

Ghosh, Paheli, Jochen Bruckbauer, Carol Trager-Cowan, and Lethy Krishnan Jagadamma. "Crystalline grain engineered CsPbIBr2 films for indoor photovoltaics." Applied Surface Science 592 (August 2022): 152865. http://dx.doi.org/10.1016/j.apsusc.2022.152865.

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24

Srivishnu, K. S., Manne Naga Rajesh, Seelam Prasanthkumar, and Lingamallu Giribabu. "Photovoltaics for indoor applications: Progress, challenges and perspectives." Solar Energy 264 (November 2023): 112057. http://dx.doi.org/10.1016/j.solener.2023.112057.

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25

Otsuka, Munechika, Yuki Kurokawa, Yi Ding, Firman Bagja Juangsa, Shogo Shibata, Takehito Kato, and Tomohiro Nozaki. "Silicon nanocrystal hybrid photovoltaic devices for indoor light energy harvesting." RSC Advances 10, no. 21 (2020): 12611–18. http://dx.doi.org/10.1039/d0ra00804d.

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26

Liu, I. Ping, Yu-Syuan Cho, Hsisheng Teng, and Yuh-Lang Lee. "Quasi-solid-state dye-sensitized indoor photovoltaics with efficiencies exceeding 25%." Journal of Materials Chemistry A 8, no. 42 (2020): 22423–33. http://dx.doi.org/10.1039/d0ta07603a.

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Quasi-solid-state dye-sensitized indoor photovoltaics fabricated using polymer blend electrolytes, judicious cosensitization and polymeric catalysts show efficiencies beyond 25% under 1000-lux artificial lighting.

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27

Arai, Ryota, Seiichi Furukawa, Narumi Sato, and Takuma Yasuda. "Organic energy-harvesting devices achieving power conversion efficiencies over 20% under ambient indoor lighting." Journal of Materials Chemistry A 7, no. 35 (2019): 20187–92. http://dx.doi.org/10.1039/c9ta06694b.

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28

Hou, Xueyan, Yiwen Wang, Harrison Ka Hin Lee, Ram Datt, Nicolas Uslar Miano, Dong Yan, Meng Li, et al. "Indoor application of emerging photovoltaics—progress, challenges and perspectives." Journal of Materials Chemistry A 8, no. 41 (2020): 21503–25. http://dx.doi.org/10.1039/d0ta06950g.

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29

Liu, Xinlu, Ruiyu Tian, Zedong Xiong, Yang Liu, and Yinhua Zhou. "Theoretical efficiency limit and realistic losses of indoor organic and perovskite photovoltaics [Invited]." Chinese Optics Letters 21, no. 12 (2023): 120031. http://dx.doi.org/10.3788/col202321.120031.

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30

Opoku, Henry, Yun Hoo Kim, Ji Hyeon Lee, Hyungju Ahn, Jae-Joon Lee, Se-Woong Baek, and Jea Woong Jo. "A tailored graft-type polymer as a dopant-free hole transport material in indoor perovskite photovoltaics." Journal of Materials Chemistry A 9, no. 27 (2021): 15294–300. http://dx.doi.org/10.1039/d1ta03577k.

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A new graft-type polymer which exhibits dual functionality of efficient charge transport and interfacial passivation was synthesized as a dopant-free hole transport material for indoor perovskite photovoltaics.

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31

Goo, Ji Soo, Jung-Hoon Lee, Sang-Chul Shin, Jin-Seong Park, and Jae Won Shim. "Undoped ZnO electrodes for low-cost indoor organic photovoltaics." Journal of Materials Chemistry A 6, no. 46 (2018): 23464–72. http://dx.doi.org/10.1039/c8ta08432g.

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32

Liu, I.-Ping, Yu-Syuan Cho, Hsisheng Teng, and Yuh-Lang Lee. "Correction: Quasi-solid-state dye-sensitized indoor photovoltaics with efficiencies exceeding 25%." Journal of Materials Chemistry A 8, no. 45 (2020): 24214. http://dx.doi.org/10.1039/d0ta90261f.

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33

Ding, Zicheng, Ruyan Zhao, Yingjian Yu, and Jun Liu. "All-polymer indoor photovoltaics with high open-circuit voltage." Journal of Materials Chemistry A 7, no. 46 (2019): 26533–39. http://dx.doi.org/10.1039/c9ta10040g.

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34

Xie, Lin, Wei Song, Jinfeng Ge, Bencan Tang, Xiaoli Zhang, Tao Wu, and Ziyi Ge. "Recent progress of organic photovoltaics for indoor energy harvesting." Nano Energy 82 (April 2021): 105770. http://dx.doi.org/10.1016/j.nanoen.2021.105770.

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35

Muhammad, Bening Tirta, Shaoni Kar, Meera Stephen, and Wei Lin Leong. "Halide perovskite-based indoor photovoltaics: recent development and challenges." Materials Today Energy 23 (January 2022): 100907. http://dx.doi.org/10.1016/j.mtener.2021.100907.

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36

Chen, Chia-Yuan, Zih-Hong Jian, Shih-Han Huang, Kun-Mu Lee, Ming-Hsuan Kao, Chang-Hong Shen, Jia-Min Shieh, et al. "Performance Characterization of Dye-Sensitized Photovoltaics under Indoor Lighting." Journal of Physical Chemistry Letters 8, no. 8 (April 10, 2017): 1824–30. http://dx.doi.org/10.1021/acs.jpclett.7b00515.

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37

Corazza, Michael, Frederik C. Krebs, and Suren A. Gevorgyan. "Lifetime of organic photovoltaics: Linking outdoor and indoor tests." Solar Energy Materials and Solar Cells 143 (December 2015): 467–72. http://dx.doi.org/10.1016/j.solmat.2015.07.037.

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38

Shin, Sang-Chul, Young-Jun You, Ji Soo Goo, and Jae Won Shim. "In-depth interfacial engineering for efficient indoor organic photovoltaics." Applied Surface Science 495 (November 2019): 143556. http://dx.doi.org/10.1016/j.apsusc.2019.143556.

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Yan, Nanfu, Chaowei Zhao, Shengyong You, Yuefeng Zhang, and Weiwei Li. "Recent progress of thin-film photovoltaics for indoor application." Chinese Chemical Letters 31, no. 3 (March 2020): 643–53. http://dx.doi.org/10.1016/j.cclet.2019.08.022.

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LIM, Dong Chan. "Artificial Light Driven Power Generation and IoT Device Convergence." Physics and High Technology 30, no. 10 (October 29, 2021): 2–12. http://dx.doi.org/10.3938/phit.30.030.

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This special issue introduces artificial photovoltaic cell technology as a new vision of solar cells that can generate electricity using an indoor lighting source. In particular, organic artificial photocell materials and device technologies are described. Basic driving mechanisms and material-process technology for high-efficiency artificial photovoltaics are introduced; furthermore, actual application research cases, such as wireless IoT sensor driving, are described. Wireless power management technology is very important to establish future social values such as a ubiquitous society and a carbon-neutral society. Instead of placing an object in a place where power can be supplied, power should be supplied by necessity anytime and anywhere, thereby maintaining a more effective global energy balance and rapidly implementing a society with zero carbon emission. If Indoor light sources, which are energy sources that are discarded, pia identification can be used, they can efficiently maximize energy use in architectural spaces such as homes and offices and contribute much in terms of the environment.

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You, Young-Jun, Chang Eun Song, Quoc Viet Hoang, Yoonmook Kang, Ji Soo Goo, Doo-Hyun Ko, Jae-Joon Lee, Won Suk Shin, and Jae Won Shim. "Indoor Organic Photovoltaics: Highly Efficient Indoor Organic Photovoltaics with Spectrally Matched Fluorinated Phenylene-Alkoxybenzothiadiazole-Based Wide Bandgap Polymers (Adv. Funct. Mater. 27/2019)." Advanced Functional Materials 29, no. 27 (July 2019): 1970183. http://dx.doi.org/10.1002/adfm.201970183.

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42

Jagadamma, Lethy Krishnan, and Shaoyang Wang. "Wide-Bandgap Halide Perovskites for Indoor Photovoltaics." Frontiers in Chemistry 9 (March 26, 2021). http://dx.doi.org/10.3389/fchem.2021.632021.

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Indoor photovoltaics (IPVs) are receiving great research attention recently due to their projected application in the huge technology field of Internet of Things (IoT). Among the various existing photovoltaic technologies such as silicon, Cadmium Telluride (CdTe), Copper Indium Gallium Selenide (CIGS), organic photovoltaics, and halide perovskites, the latter are identified as the most promising for indoor light harvesting. This suitability is mainly due to its composition tuning adaptability to engineer the bandgap to match the indoor light spectrum and exceptional optoelectronic properties. Here, in this review, we are summarizing the state-of-the-art research efforts on halide perovskite-based indoor photovoltaics, the effect of composition tuning, and the selection of various functional layer and device architecture onto their power conversion efficiency. We also highlight some of the challenges to be addressed before these halide perovskite IPVs are commercialized.

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Yan, Bin, Xinsheng Liu, Wenbo Lu, Mingjie Feng, Hui-Juan Yan, Zongbao Li, Shunchang Liu, Cong Wang, Jin-Song Hu, and Ding-Jiang Xue. "Indoor photovoltaics awaken the world’s first solar cells." Science Advances 8, no. 49 (December 9, 2022). http://dx.doi.org/10.1126/sciadv.adc9923.

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Selenium (Se) solar cells were the world’s first solid-state photovoltaics reported in 1883, opening the modern photovoltaics. However, its wide bandgap (~1.9 eV) limits sunlight harvesting. Here, we revisit the world’s oldest but long-ignored photovoltaic material with the emergence of indoor photovoltaics (IPVs); the absorption spectrum of Se perfectly matches the emission spectra of commonly used indoor light sources in the 400 to 700 nm range. We find that the widely used Te adhesion layer also passivates defects at the nonbonded Se/TiO 2 interface. By optimizing the Te coverage from 6.9 to 70.4%, the resulting Se cells exhibit an efficiency of 15.1% under 1000 lux indoor illumination and show no efficiency loss after 1000 hours of continuous indoor illumination without encapsulation, outperforming the present IPV industry standard of amorphous silicon cells in both efficiency and stability. We further fabricate Se modules (6.75 cm 2 ) that produce 232.6 μW output power under indoor illumination, powering a radio-frequency identification–based localization tag.

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Wei, Zhouqing, Wenbo Lu, Zongbao Li, Mingjie Feng, Bin Yan, Jin-Song Hu, and Ding-Jiang Xue. "Low-cost and high-performance selenium indoor photovoltaics." Journal of Materials Chemistry A, 2023. http://dx.doi.org/10.1039/d3ta04530g.

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Selenium (Se), as the world’s oldest photovoltaic material, has reemerged as a promising absorber material for indoor photovoltaics (IPVs) due to its suitable wide bandgap of ~1.9 eV, nontoxicity, and...

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Jiang, Xueshi, Bernhard Siegmund, and Koen Vandewal. "Organic indoor PV: Vanishing surface recombination allows for robust device architecture." Materials Horizons, 2024. http://dx.doi.org/10.1039/d4mh00340c.

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As a promising candidate to drive low-power, off-grid applications, organic indoor photovoltaics are beginning to attract research and commercial attention. In organic photovoltaic devices, charge transport layers are often used...

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Li, Chen, Haoxuan Sun, Da Dou, Shan Gan, and Liang Li. "Bipolar Pseudohalide Ammonium Salts Bridged Perovskite Buried Interface toward Efficient Indoor Photovoltaics." Advanced Energy Materials, June 4, 2024. http://dx.doi.org/10.1002/aenm.202401883.

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AbstractDue to the higher photon energy under indoor photovoltaic conditions, using perovskite materials with wider bandgaps has become a consensus. However, updating perovskite absorbers requires additional adaptations involving at least two layers of transport materials and two interfaces, increasing the development complexity. This study acknowledges that the buried interface is the primary location for the generation of photoinduced carriers, and achieving efficient carrier separation and transport at this interface will solve most of the open circuit voltage (VOC) loss issues encountered in transitioning from solar photovoltaics to indoor photovoltaics. Therefore, a class of bipolar pseudohalide ammonium salts is proposed for use as bridging agents for the buried interface to effectively resolve the issues of lattice misalignment and insufficient carrier driving force at the buried interface when broadening the perovskite bandgap, thereby reducing VOC loss in indoor photovoltaics. The optimized device exhibits an excellent photoelectric conversion efficiency (PCE) of 41.04%, with a record‐high VOC of 1.08 V. It also demonstrates impressive long‐term operational stability with a T80 lifetime of 1000 h. Substituting various non‐buried interface transport materials and different categories of wide‐bandgap perovskite absorbers does not alter the effectiveness, proving its universality.

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Datt, Ram, Pietro Caprioglio, Saqlain Choudhary, Weixia Lan, Henry J. Snaith, and Wing Chung Tsoi. "Engineered charge transport layers for improving indoor perovskite photovoltaic performance." Journal of Physics: Energy, March 8, 2024. http://dx.doi.org/10.1088/2515-7655/ad31bb.

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Abstract The developing Internet of Things (IoTs) market is attracting the indoor photovoltaic (IPV) as an essential power source. Perovskite photovoltaics (PPVs) are a fascinating candidate as an IPV in solution-processable photovoltaics. Recent developments in PPVs can deliver power conversion efficiency (PCE) up to 25% outdoor (AM 1.5G) and 40% under indoor (1000 lux) light. The selection of charge transport layers has played an essential role in improving indoor performance. Herein, formamidinium-caesium-based mixed-cation (CsFAPb(IBr)3) PPV devices are fabricated, and their outdoor and indoor performances were evaluated by changing the different charge transport layer (CTL) combinations such as PTAA-PCBM and SAM-C60 layers. Outdoor PCEs were 13.76% and 15.27% achieved for PTAA-PCBM and SAM-C60-based devices, respectively. Meanwhile, under LED (4000K) 1000 lux, the PCEs were 26.32% and 31.92% for PTAA-PCBM and SAM-C60-based PPV, respectively. The short circuit current (Jsc) (116.8 to 122.5 µA/cm2) and fill factor (FF) (0.724 to 0.817) were the main parameters which improved for SAM-C60-based devices under indoor light. This study points to the importance of charge transport layer combination and indicates the promising potential of SAM-C60 interlayers in PPV indoor applications.

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Wang, Shaoyang, Byeong-Cheol Kang, Sang-Joon Park, Tae-Jun Ha, and Lethy Krishnan Jagadamma. "P3HT vs Spiro-OMeTAD as a hole transport layer for halide perovskite indoor photovoltaics and self-powering of motion sensors." Journal of Physics: Materials, April 5, 2023. http://dx.doi.org/10.1088/2515-7639/accaaa.

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Abstract Recent years have witnessed the emergence of indoor photovoltaic devices with the rapid development of the Internet of Things technology field. Among the candidates for indoor photovoltaics, halide perovskites are attracting enormous attention due to their outstanding optoelectronic properties suitable for indoor light harvesting. Here we investigated the indoor photovoltaic properties of CH3NH3PbI3-based devices using Spiro-OMeTAD and P3HT as the hole transport layers. The Spiro-OMeTAD-based devices show a consistently higher power conversion efficiency under indoor illumination and 1 Sun, with the champion devices showing a power conversion efficiency of 21.0% and 30.1% for the forward and reverse scan under 1000 lux warm white LED illumination. Fewer trap states and higher carrier lifetime were revealed for Spiro-OMeTAD based devices compared to P3HT. The best-performed Spiro-OMeTAD-based devices are used to self-power a wearable motion sensor, which could detect human motion in real-time, to create a primary sensor system with independent power management. By attaching the Spiro-OMeTAD indoor photovoltaic device and the strain sensor, the sensor exhibits an accurate and sensitive response with finger bending movements with good repeatability and negligible degradation of mechanical stability, which indicates the success of sensor powering with the indoor photovoltaic device.

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Bulloch, Alasdair, Shaoyang Wang, Paheli Ghosh, and Lethy Krishnan Jagadamma. "Hysteresis in hybrid perovskite indoor photovoltaics." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 380, no. 2221 (February 28, 2022). http://dx.doi.org/10.1098/rsta.2021.0144.

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Halide perovskite indoor photovoltaics (PV) are a viable solution to autonomously power the billions of sensors in the huge technology field of the Internet of Things. However, there exists a knowledge gap in the hysteresis behaviour of these photovoltaic devices under indoor lighting conditions. The present work is the first experimental study dedicated to exploring the degree of hysteresis in halide perovskite indoor photovoltaic devices by carrying out both transient J–V scan and steady state maximum power point tracking (MPPT) measurements. Dependence of hysteresis on device architecture, selection of electron transporting layers and the composition of the perovskite photoactive layers were investigated. Under indoor illumination, the p-i-n MAPbI 3 -based devices show consistently high power conversion efficiency (PCE) (stabilized PCE) of greater than 30% and negligible hysteresis behaviour, whereas the n-i-p MAPbI 3 devices show poor performance (stabilized PCE ∼ 15%) with pronounced hysteresis effect. Our study also reveals that the n-i-p triple cation perovskite devices are more promising (stabilized PCE ∼ 25%) for indoor PV compared to n-i-p MAPbI 3 due to their suppressed ion migration effects. It was observed that the divergence of the PCE values estimated from the J–V scan measurements, and the maximum power point tracking method is higher under indoor illumination compared to 1 Sun, and hence for halide perovskite-based indoor PV, the PCE from the MPPT measurements should be prioritized over the J–V scan measurements. The results from our study suggest the following approaches for maximizing the steady state PCE from halide perovskite indoor PV: (i) select perovskite active layer composition with suppressed ion migration effects (such as Cs-containing triple cation perovskites) and (ii) for the perovskite composition such as MAPbI 3 , where the ion migration is very active, p-i-n architecture with organic charge transport layers is beneficial over the n-i-p architecture with conventional metal oxides (such as TiO 2 , SnO 2 ) as charge transport layers. This article is part of the theme issue ‘Developing resilient energy systems’.

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Chakraborty, Abhisek, Giulia Lucarelli, Jie Xu, Zeynab Skafi, Sergio Castro-Hermosa, A. B. Kaveramma, R. Geetha Balakrishna, and Thomas M. Brown. "Photovoltaics for Indoor Energy Harvesting." Nano Energy, June 2024, 109932. http://dx.doi.org/10.1016/j.nanoen.2024.109932.

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