Determination of bandgaps of photoactive materials in perovskite solar cells at high temperatures by in-situ temperature-dependent resistance measurement-中国期刊网

摘要 Normally,itisdifficulttodirectlymeasurethebandgapsofperovskitebasedonmethylammonium（MA）orformamidinium（FA）athightemperaturesduetomaterialdecomposition.Wepreventthedecompositionbykeepingthesynthesizedperovskitefilms（MAPbI3andMAPbI3）inorganiciodidevapors,thenmeasurethein-situresistanceofthefilmsatvariedtemperatures,andfurtherevaluatethebandgapsofthesetwomaterials.Theevaluatedbandgapsareconsistentwiththeresultsfromultraviolet-visible（UV-vis）absorptionspectrum.ThebandgapofMAPbI3decreaseswithtemperatureabove95℃,whereasthatofFAPbI3firstincreaseswithtemperaturefrom95℃to107℃andthendecreaseswithtemperatureabove107℃.

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Determination of bandgaps of photoactive materials in perovskite solar cells at high temperatures by in-situ temperature-dependent resistance measurement

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Determination of bandgaps of photoactive materials in perovskite solar cells at high temperatures by in-situ temperature-dependent resistance measurement

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