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
戴峣 1王鹏阳 1赵颖 1张晓丹1
作者信息
- 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;天津市光电薄膜器件与技术重点实验室,天津 300350;物质绿色创造和制造海河实验室,天津 300192;教育部薄膜光电技术工程研究中心,天津 300350
- 折叠
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.
Abstract
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)Key words
perovskite solar cells/crystal growth/wide band gap semiconductors/passivation/1,1'-sulfonylbis(2-methyl-1 H-imidazole)引用本文复制引用
基金项目
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项目()
中央高校基本科研业务费专项南开大学项目()
出版年
2024
NETL
NSTL
万方数据