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

A new approach to improve the quality of MAPbI(3 − x)Cl(x) 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 MAPbI(3 − x)Cl(x) perovskite film. The resulting fi...

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Detalles Bibliográficos
Autores principales: Xu, Qing-Yang, Yuan, Da-Xing, Mu, Hao-Ran, Igbari, Femi, Bao, Qiaoliang, Liao, Liang-Sheng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2016
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4864791/
https://www.ncbi.nlm.nih.gov/pubmed/27173677
http://dx.doi.org/10.1186/s11671-016-1467-9
Descripción
Sumario:A new approach to improve the quality of MAPbI(3 − x)Cl(x) 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 MAPbI(3 − x)Cl(x) 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. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/s11671-016-1467-9) contains supplementary material, which is available to authorized users.

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