高等学校化学学报 ›› 2025, Vol. 46 ›› Issue (8): 20250018.doi: 10.7503/cjcu20250018

• 物理化学 • 上一篇    下一篇

含吡啶基团的小分子三苯胺改善CsPbI3钙钛矿太阳电池性能的研究

吕海军1, 王胜港2, 马嘉茁2, 郝彦忠2()   

  1. 1.河北科技大学化工学院 石家庄 050091
    2.河北科技大学理学院, 石家庄 050091
  • 收稿日期:2025-01-17 出版日期:2025-08-10 发布日期:2025-05-06
  • 通讯作者: 郝彦忠 E-mail:yzhao@hebust.edu.cn
  • 基金资助:
    河北省自然科学基金(B2022208001)

Performance of CsPbI3 Perovskite Solar Cell Improved by Small Molecules of Triphenylamine Containing Pyridine Groups

LYU Haijun1, WANG Shenggang2, MA Jiazhuo2, HAO Yanzhong2()   

  1. 1.College of Chemical Engineering,Hebei University of Science and Technology,Shijiazhuang 050091,China
    2.College of Science,Hebei University of Science and Technology,Shijiazhuang 050091,China
  • Received:2025-01-17 Online:2025-08-10 Published:2025-05-06
  • Contact: HAO Yanzhong E-mail:yzhao@hebust.edu.cn
  • Supported by:
    the Natural Science Foundation of Hebei Province, China(B2022208001)

摘要:

采用Suzuki-Miyaura和Ullmann等经典反应分别合成了两种具有D-Π-A结构的新型小分子三苯胺衍生物N,N-双(4-甲氧基苯基)-4-(4-吡啶基)苯胺(H432)和N,N-双(4-甲氧基苯基)-4-[4-(氰基)-3-吡啶基]苯胺(H462), 将两种小分子三苯胺分别用结晶修饰和表面后处理修饰的方法沉积在FTO/c-TiO2/m-TiO2/CsPbI3复合薄膜上, 制备了CsPbI3钙钛矿太阳电池; 采用扫描电子显微镜(SEM)、 电流密度-电压(J-V)曲线和电化学阻抗等方法进行表征和测试. 结果表明, 采用表面后处理修饰方法制备的CsPbI3钙钛矿太阳电池的能量转换效率显著提高, 0.05 mol/L H432和0.05 mol/L H462修饰的CsPbI3钙钛矿太阳电池能量转换效率由对照器件的12.44%分别提高到了15.54%和15.66%.

关键词: CsPbI3钙钛矿太阳电池, 小分子三苯胺衍生物, 界面修饰, 能量转换效率

Abstract:

In this paper, two novel small-molecule triphenylamine derivatives NN-bis(4-methoxyphenyl)-4-(4- pyridyl) aniline(H432) and NN-bis(4-methoxyphenyl)-4-[4-(cyano)-3-pyridyl] aniline(H462), were synthesized by classic Suzuki-Miyaura and Ullmann coupling reactions. The small-molecule derivatives were deposited onto FTO/c-TiO2/m-TiO2/CsPbI3 composite films with crystal modification and surface post-treatment modification to fabricate CsPbI3 perovskite solar cells. The resulting devices were characterized and tested by SEM, J-V curves, and electrochemical impedance spectroscopy. The results show that the CsPbI3 perovskite solar cells prepared by surface post-treatment modification exhibits a significant increase in power conversion efficiency(PCE). Specifically, the PCE of CsPbI3 perovskite solar cells modified with 0.05 mol/L H432 increases from 12.44%(control device) to 15.54%, while the PCE of those modified with 0.05 mol/L H462 improves from 12.44% to 15.66%.

Key words: CsPbI3 perovskite solar cell, Small-molecule triphenylamine derivative, Interface modification, Power conversion efficiency

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