Solar energy paper index
Efficient hole extraction suppresses photo-induced phase segregation in inorganic perovskite solar cells
One-line summary
A solar energy research paper on Efficient hole extraction suppresses photo-induced phase segregation in inorganic perovskite solar cells.
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
Abstract Photo-induced phase segregation in mixed-halide perovskites is commonly attributed to perovskite’s intrinsic ionic instability. Here, we demonstrate that segregation in inorganic CsPbI3−xBrx perovskite solar cells is governed by hole extraction dynamics rather than intrinsic instability. Carrier extraction modulation shows that electron extraction has a negligible influence, whereas efficient hole extraction suppresses phase segregation. Removing the hole transport layer restores segregation in otherwise identical films, indicating a hole-accumulation-driven origin. The comparison under different illumination conditions further supports that phase segregation is mitigated at a reduced carrier-generation level. These results establish phase segregation in CsPbI3−xBrx as a hole-extraction-limited dynamic process.
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