1,1’-磺酰基双(2-甲基-1H-咪唑)对宽带隙钙钛矿太阳电池性能的影响  

INFLUENCE OF 1,1'-SULFONYL BIS(2-METHYL-1H-IMIDAZOLE)ON PERFORMANCE OF WIDE-BAND GAP PEROVSKITE SOLAR CELLS

作　　者：戴峣 王鹏阳 赵颖[1,2,3,4] 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)

机构地区：[1]南开大学光电子薄膜器件与技术研究所,可再生能源转换与存储中心,太阳能研究中心,天津300350 [2]天津市光电薄膜器件与技术重点实验室,天津300350 [3]物质绿色创造和制造海河实验室,天津300192 [4]教育部薄膜光电技术工程研究中心,天津300350

出　　处：《太阳能学报》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。

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.

关 键 词：钙钛矿太阳电池 晶体生长 宽带隙半导体 钝化 1 1’-磺酰基双(2-甲基-1H-咪唑) 

分 类 号：TM914.4[电气工程—电力电子与电力传动]