Temperature Impact on Perovskite Solar Cells Under Operation

ChemSusChem
Isabel MesquitaAdélio Mendes

Abstract

Perovskite solar cells (PSC) have emerged as a promising substitute for conventional silicon panels, showing the fastest power conversion efficiency evolution within the photovoltaic field, going from 3.8 % to 23.7 % in a few years. However, PSC thermal stability is still an obstacle to their commercialization. In this study, the temperature effect on mesoporous triple-cation perovskite solar cells with two different hole extraction materials-2,2',7,7'-tetrakis(N,N-di-p-methoxyphenylamine)-9,9'-spirobifluorene (spiro-OMeTAD) and poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA)-is assessed. The cells are exposed to thermal stress between -5 °C and 80 °C and their photovoltaic performance is monitored in situ to reproduce real operating conditions. At low temperatures, the devices present very stable values (average loss <5 %), but as the temperature increases significant decreases in the open circuit potential and short-circuit current are observed. X-ray diffraction shows no change in the perovskite crystal structure with temperature. However, electron scanning microscopy and X-ray photoelectron spectroscopy indicate that temperature has a great impact on the hole extraction layer. The cell performance loss is attributed ...Continue Reading

References

Jan 29, 2014·Physical Chemistry Chemical Physics : PCCP·Colin D BailieMichael D McGehee
Aug 11, 2015·Physical Chemistry Chemical Physics : PCCP·J MaçairaA Mendes
Aug 2, 2016·Energy & Environmental Science·Michael SalibaMichael Grätzel
May 10, 2018·Chemistry : a European Journal·Ernestas KasparaviciusVytautas Getautis

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