Theoretical lifetime extraction and experimental demonstration of stable cesium-containing tri-cation perovskite solar cells with high efficiency

Rui Zhang, Detao Liu, Yafei Wang, Ting Zhang, Xiangling Gu, Peng Zhang, Jiang Wu, Zhi David Chen, Yingchun Zhao, Shibin Li

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

Despite the high power conversion efficiency, the severe performance degradation of organic-inorganic lead halide perovskite solar cells caused by moisture and thermal phase transition is an obstacle to commercialization of the perovskite solar cells. We propose the theoretical lifetime extraction of perovskite solar cells with a mixed-cations lead halide perovskite absorber containing CH3NH3+, CH3(NH2)2+ and Cs+. The estimated mean time to failure (MTTF) of the triple cation perovskite solar cells is up to 180 days in ambient. Compared with the perovskite solar cells based on CH3NH3PbI3, the triple-cation perovskite solar cells, whose power conversion efficiency reaches 18.2% in this study, have a much better performance in terms of thermal stability and humidity stability. Improvements of both performance and stability pave the way for commercialization of perovskite solar cells.

Original languageEnglish
Pages (from-to)98-106
Number of pages9
JournalElectrochimica Acta
Volume265
DOIs
StatePublished - Mar 1 2018

Bibliographical note

Funding Information:
This work was supported by National Natural Science Foundation of China under Grant Nos. 61421002 , 61574029 , and 61371046 . This work was also partially supported by University of Kentucky . Appendix A

Funding Information:
This work was supported by National Natural Science Foundation of China under Grant Nos. 61421002, 61574029, and 61371046. This work was also partially supported by University of Kentucky.

Publisher Copyright:
© 2017

Keywords

  • Humidity stability
  • Perovskite solar cells
  • Reliability
  • Thermal stability
  • Triple-cation

ASJC Scopus subject areas

  • Chemical Engineering (all)
  • Electrochemistry

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