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Impact of the Top Electrode Material on the Stability of Inverted Lead Halide Perovskite Solar Cells: A Comparative Study
One-line summary
A solar energy research paper on Impact of the Top Electrode Material on the Stability of Inverted Lead Halide Perovskite Solar Cells: A Comparative Study.
Engineering notes
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Chinese explanation / 中文解读
中文解读待补充：本站会优先为光伏效率、钙钛矿太阳能电池、储能技术、太阳能热利用、BIPV、并网技术等高价值论文补充中文说明。
Original abstract
Top electrodes play a vital role in perovskite solar cells (PSCs) by enabling efficient electron extraction and transport, which significantly influences the device efficiency and operational stability under harsh environmental conditions. This work presents a systematic investigation of different electrodes, such as aluminum (Al), silver (Ag), cobalt (Co), chromium (Cr), nickel (Ni), and titanium (Ti), by the thermal evaporation technique in inverted‐PSCs. From the experimental evidence, the devices based on Al, Ag, Ni, Cr, Ti, and Co exhibited a power conversion efficiency of ~15.4%, 13.0%, 13.3%, 11.7%, 12.0%, and 11.6%, respectively. Most importantly, the Ti electrode exhibited excellent stability under continuous light exposure for 1200 h without any encapsulation, attributed to suppression of diffusion into the MAPbI 3 /WO 3− x layer, preventing pitting and void defects. Therefore, Ti is an ideal top electrode material for p–i–n devices. Our findings emphasize that MAPbI 3 /WO 3− x /Ti stands as the most stable interface reported for p–i–n PSCs under harsh aging conditions.
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