摘要
对倒置结构,带隙为1.68 eV的钙钛矿太阳电池光吸收层掺杂1,1’-磺酰基双(2-甲基-1H-咪唑),以改善钙钛矿薄膜质量,提高太阳电池性能。空间电荷限制电流(SCLC)测试结果表明,掺杂后的钙钛矿薄膜的缺陷密度明显降低;稳态光致发光光谱(PL)结果表明,掺杂后的钙钛矿薄膜的非辐射复合被显著抑制;最终太阳电池的开路电压达到1.17 V,光电转换效率达到21.42%,在氮气环境下储存1000 h后,未封装的太阳电池仍能保持初始效率的96%,稳定性显著提高。
In this work,1,1’-sulfonyl bis(2-methyl-1H-imidazole)was doped into the light absorption layer of inverted structure perovskite solar cells with a band gap of~1.68 eV,resulting in improved film quality and device performance.Space charge limited current(SCLC)testing results reveal that the defect density of doped perovskite films decreases significantly,while the steady-state photoluminescence(PL)analysis demonstrates that non-radiative recombination is significantly inhibited.The open-circuit voltage reaches 1.17 V and the photoelectric conversion efficiency achieves 21.42%.The unpackaged device can still maintain 96%of the initial efficiency,and the stability is significantly improved after being stored in nitrogen environment for 1000 hours.
作者
戴峣
王鹏阳
赵颖
张晓丹
Dai Yao;Wang Pengyang;Zhao Ying;Zhang Xiaodan(Solar Energy Conversion Center,Institute of Photoelectronic Thin Film Devices and Technology,Renewable Energy Conversion and Storage Center,Nankai University,Tianjin 300350,China;Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin,Tianjin 300350,China;Haihe Laboratory of Sustainable Chemical Transformations,Tianjin 300192,China;Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education,Tianjin 300350,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2024年第4期43-50,共8页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(62274099)
高等教育学科创新海外人才引进项目(B16027)
海河可持续化学转化实验室、南开大学中央高校基本科研业务费。
