Citation: Jian SONG, Xing-Zhou SU, Qian-Nan YAO, Xue-Kun YANG, Yu-Long ZHAO, Ying-Huai QIANG, Chun-Guang REN. High performance perovskite solar cell based on passivation by a multifunctional amino acid derivative[J]. Chinese Journal of Inorganic Chemistry, ;2023, 39(2): 327-336. doi: 10.11862/CJIC.2022.292 shu

High performance perovskite solar cell based on passivation by a multifunctional amino acid derivative

1.
School of Materials Science and Physics, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
2.
College of Life Sciences, Yantai University, Yantai, Shandong 264000, China

Corresponding author: Jian SONG, jsoong@cumt.edu.cn Chun-Guang REN, cgren@ytu.edu.cn
Received Date: 18 September 2022
Revised Date: 28 November 2022

Figures(4)

Herein, we proposed a facial method to passivate surface defects on perovskite film by an amino acid derivative, Fmoc-Ile-OH molecule, which contains multifunctional groups, including carboxyl, amino, and Fmoc protecting group (with benzene ring). These functional groups exhibit a synergistic effect in improving perovskite film quality and stability. Specifically, we find that this modification could decrease the content of PbI₂ impurity and enlarge the particle size of perovskite film. Moreover, the optical and interface carrier transport properties were improved apparently. The better diode ideality factors, lower trap-filled limit voltages, and higher carrier recombination resistance for modified perovskite solar cells all demonstrated that Fmoc-Ile-OH could effectively passivate surface defects in perovskite films. Finally, we obtain a device with high conversion efficiency, 21.09%, which is much better than the control one, 18.00%.
- perovskite solar cell,
- passivation,
- multifunctional groups,
- amino acid derivative
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沈阳化工大学材料科学与工程学院沈阳 110142