Theoretical evaluation of the realizable power conversion efficiency and the possible scheme for hole-transport-layer-free carbon-cathode CsPbI2Br solar cells

被引：3
作者：
Wan, Guodong [1 ,2 ]
Li, Yali [1 ,2 ]
Liu, Xiaoyang [1 ,2 ]
Li, Wenxuan [1 ,2 ]
Liu, Hai [1 ,2 ]
Du, Mingbo [1 ,2 ]
Liu, Qiming [1 ,2 ]
Fu, Yujun [1 ,2 ]
He, Deyan [1 ,2 ]
Li, Junshuai [1 ,2 ]
机构：
[1] Lanzhou Univ, LONGi Inst Future Technol, 222 South Tianshui Rd, Lanzhou 730000, Peoples R China
[2] Lanzhou Univ, Sch Mat & Energy, 222 South Tianshui Rd, Lanzhou 730000, Peoples R China
来源：
PHYSICA SCRIPTA | 2025年 / 100卷 / 02期
关键词：
CsPbI2Br solar cells; hole-transport-layer-free; carbon cathode; alumina passivation; tunneling effect; performance prediction; mechanism; PHOTOVOLTAIC PERFORMANCE; PEROVSKITE; INTERFACE; STABILITY; GAP;
D O I：
10.1088/1402-4896/adaaad
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Hole-transport-layer (HTL)-free carbon-cathode CsPbI2Br solar cells have gained notable attention because of the good balance between light absorption and improved stability, as well as the cost advantage. However, the power conversion efficiency (PCE) experimentally realized for the related solar cells of < 16% is necessarily improved for possible practical application. In this study, the impact of the interfacial defect density between CsPbI2Br and the carbon cathode that is one of the most pivotal factors influencing the PCE improvement is studied, and meanwhile a feasible scheme using a thin AlOx passivation layer to block electrons and allow hole tunneling is proposed. The PCE of 19.68% is predicted for HTL-free carbon-cathode CsPbI2Br solar cells.
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页数：8
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