Improved interfacial adhesion for stable flexible inverted perovskite solar cells

Jie Dou, Qizhen Song, Yue Ma, Hao Wang, Guizhou Yuan, Xueyuan Wei, Xiuxiu Niu, Sai Ma, Xiaoyan Yang, Jing Dou, Shaocheng Liu, Huanping Zhou, Cheng Zhu, Yihua Chen, Yujing Li, Yang Bai, Qi Chen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

Flexible perovskite solar cells have attracted widespread attention due to their unique advantages in lightweight, high flexibility, and easy deformation, which are suitable for portable electronics. However, the inverted (p-i-n) structured devices suffer from poor stability largely due to the low adhesion at the brittle interface (the hole transport layer/perovskite). Herein, zeolitic imidazolate framework-67 (ZIF-67) is applied to inverted structured cells to optimize the interface and prolong the device lifetime. As a result, the flexible devices based on ZIF-67 obtain the champion power conversion efficiency of 20.16%. Over 1000 h under continuous light irradiation, the device retains 96% and 80% of its original efficiency without and with bias, respectively. Notably, devices show mechanical endurance with over 78% efficiency retention after 10,000 cycles of consecutive bending cycles (R = 6 mm). The introduction of ZIF-67 suppresses the cracking in device bending, which results in improved environmental stability and bending durability.

Original languageEnglish
Pages (from-to)288-294
Number of pages7
JournalJournal of Energy Chemistry
Volume76
DOIs
Publication statusPublished - Jan 2023

Keywords

  • Flexible perovskite solar cells
  • Interfacial adhesion
  • Stability
  • ZIF-67

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Dou, J., Song, Q., Ma, Y., Wang, H., Yuan, G., Wei, X., Niu, X., Ma, S., Yang, X., Dou, J., Liu, S., Zhou, H., Zhu, C., Chen, Y., Li, Y., Bai, Y., & Chen, Q. (2023). Improved interfacial adhesion for stable flexible inverted perovskite solar cells. Journal of Energy Chemistry, 76, 288-294. https://doi.org/10.1016/j.jechem.2022.09.044