Efficiency Enhancement of Perovskite Solar Cells by Pumping Away the Solvent of Precursor Film Before Annealing

Qing Yang Xu, Da Xing Yuan, Hao Ran Mu, Femi Igbari, Qiaoliang Bao, Liang Sheng Liao

Research output: Contribution to journalArticleResearchpeer-review

10 Citations (Scopus)

Abstract

A new approach to improve the quality of MAPbI3 − xClx perovskite film was demonstrated. It involves annealing the precursor film after pumping away the solvent, which can decrease the influence of solvent evaporation rate for the growth of the MAPbI3 − xClx perovskite film. The resulting film showed improved morphology, stronger absorption, fewer crystal defects, and smaller charge transfer resistance. The corresponding device demonstrated enhanced performance when compared with a reference device. The averaged value of power conversion efficiency increased from 10.61 to 12.56 %, and a champion efficiency of 14.0 % was achieved. This work paves a new way to improve the efficiency of perovskite solar cells.

Original languageEnglish
Article number248
Number of pages6
JournalNanoscale Research Letters
Volume11
Issue number1
DOIs
Publication statusPublished - 1 Dec 2016
Externally publishedYes

Keywords

  • High-quality MAPbICl layer
  • Perovskite solar cells
  • Pump away the solvent

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