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Comparative Studies on the Efficiency, Reproducibility and Stability of Perovskite Solar Cells
摘要： In literature, many studies based on planar inverted structure using either CH3NH3PbI3 and CH3NH3PbI3-xClx perovskite absorbers have reported as high-efficiency solid-state perovskite solar cells. This study includes the comparison of photovoltaic characterizations, reproducibility and stability results of solar cells fabricated by using CH3NH3PbI3 and CH3NH3PbI3-xClx perovskite compounds. Herein, the results showed that CH3NH3PbI3 perovskite solar cells gave a lower photovoltaic performance as-fabricated when compared with CH3NH3PbI3-xClx perovskite solar cells. However, after 24 hours, CH3NH3PbI3 perovskite compound showed a higher photovoltaic performance and better time stability in inert atmosphere and more reproducible results.
关键词： reproducibility,Planar thin film photovoltaics,Perovskite solar cell,stability
更新于2025-09-12 10:27:22
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Thermal and angular dependence of next‐generation photovoltaics under indoor lighting
摘要： Next‐generation photovoltaic technologies such as dye‐sensitized solar cells, organic thin‐film photovoltaics and perovskite solar cells are promising to efficiently harvest ambient light energy. However, more and deeper understanding of their photovoltaic characteristics is essential to create new applications under room light illumination. In this study, for the first time, the difference in temperature coefficients and angular dependence of photovoltaic parameters for the large‐area devices are investigated systematically under the compact fluorescent lamp and light‐emitting diode light. These emerging photovoltaic devices, compared with the single crystalline silicon solar cells, not only have higher open‐circuit voltage (up to approximate 1 V) and better power conversion efficiency (in the range of 9.2% ~ 22.6%) but also exhibit less temperature dependent voltage and output power (< ?0.6% °C?1), as well as broader angular response (over 75 degrees). The state‐of‐the‐art dye‐sensitized and organic thin‐film devices also show advantageously positive temperature coefficients of current, and the latter even has positive thermal dependence of fill factor. These features suggest the next‐generation photovoltaic devices are more favorable than the conventional crystalline silicon solar cells for real‐life indoor applications.
关键词： dye‐sensitized solar cells,indoor lighting,perovskite solar cells,temperature and angular dependent power,organic thin‐film photovoltaics
更新于2025-09-11 14:15:04