高等学校化学学报 ›› 2026, Vol. 47 ›› Issue (3): 20250268.doi: 10.7503/cjcu20250268

• 物理化学 • 上一篇    下一篇

噻吩基为π桥、 氰基吡啶基为吸电子基团的小分子三苯胺衍生物用于改善CsPbI3太阳电池的性能

郝彦忠1(), 吕海军2, 刘佳慧1, 位晓佳1, 叶晓婵1   

  1. 1.河北科技大学理学院
    2.河北科技大学化工学院,石家庄 050091
  • 收稿日期:2025-09-21 出版日期:2026-03-10 发布日期:2026-01-10
  • 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)

Small Molecular Triphenylamine Derivative with Thiophene Group as π Bridge and Cyanopyridine Group as Electron-withdrawing Group Improving the Performance of CsPbI3 Solar Cell

HAO Yanzhong1(), LYU Haijun2, LIU Jiahui1, WEI Xiaojia1, YE Xiaochan1   

  1. 1.College of Science,Hebei University of Science and Technology
    2.College of Chemical Engineering,Hebei University of Science and Technology,Shijiazhuang 050091,China
  • Received:2025-09-21 Online:2026-03-10 Published:2026-01-10
  • Contact: HAO Yanzhong E-mail:yzhao@hebust.edu.cn
  • Supported by:
    the Natural Science Foundation of Hebei Province, China(B2022208001)

摘要:

采用Stille偶联和Suzuki偶联等经典反应, 合成了2种D⁃π⁃A结构的小分子三苯胺衍生物N,N-双(4-甲氧基苯基)-4-[5-(4-吡啶基)-2-噻吩基]苯胺(H457)和N,N-双(4-甲氧基苯基)-4-[2,3-二氢-7-(4-吡啶基)噻吩基] 苯胺(H459); 将2种小分子三苯胺衍生物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, 并测量了各种CsPbI3钙钛矿太阳电池的能量转换效率. 采用扫描电子显微镜(SEM)、 X射线衍射(XRD)、 紫外-可见吸收光谱(UV-Vis)、 电流密度-电压(J-V)曲线和电化学阻抗等方法对CsPbI3钙钛矿太阳电池进行了表征和机理研究. 结果表明, 修饰的CsPbI3钙钛矿太阳电池的能量转换效率提高到15.82%, 且被修饰的电池器件稳定性和使用寿命均得到提升.

关键词: 能量转换效率, D?π?A结构, 小分子三苯胺衍生物, CsPbI3钙钛矿太阳电池

Abstract:

In this paper, two novel D-π-A structured small molecular triphenylamine derivatives, NN-bis(4- methoxyph-enyl)-4-[5-(4-pyridyl)-2-thienyl] aniline(H457) and NN-bis(4-methoxyphenyl)-4-[2,3-dihydro-7-(4-pyridyl)thienyl] aniline(H459), were synthesized with classical reactions such as Stille coupling and Suzuki coupling. The small molecular derivatives were deposited onto FTO/c-TiO2/m-TiO2/CsPbI3 composite films by means of crystallization modification and surface post-treatment modification to fabricate CsPbI3 perovskite solar cells. The energy conversion efficiencies of various CsPbI3 perovskite solar cells were measured, and their characterization and mechanism were studied using scanning electron microscope(SEM), X-ray diffractometer(XRD), ultraviolet-visible spectroscopy(UV-Vis), current density voltage(J⁃V) curves, and electrochemical impedance spectroscopy. The results show that the energy conversion efficiency of the modified CsPbI3 perovskite solar cells has increased to 15.82%, and the stability and service life of the modified cell devices have also been improved.

Key words: Power conversion efficiency, D?π?A structure, Small molecular triphenylamine derivative, CsPbI3 perovskite solar cell

中图分类号: 

TrendMD: