4.6 Article

Spray reaction prepared FA1-xCsxPbI3 solid solution as a light harvester for perovskite solar cells with improved humidity stability

Journal

RSC ADVANCES
Volume 6, Issue 18, Pages 14792-14798

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra23359c

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Funding

  1. National Natural Science Foundation of China [51273079, 11374121]
  2. National Basic Research Program of China [2011CB808204]
  3. Science Development Program of JiLin Province [20150519021JH]
  4. Fundamental Research Funds for Central Universities at Jilin University

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FA(1-x)Cs(x)PbI(3) solid solution films are prepared as light harvesters for perovskite solar cells by a spray reaction. Cs+ ions can improve the quality of the light harvester film, and the average PCE of devices increases from 11.3% for FAPbI(3) to 14.2% for FA(0.9)Cs(0.1)PbI(3). Moreover, FA(0.9)Cs(0.1)PbI(3)-based devices exhibit remarkable improvement on humidity stability.

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