Precursor Engineering of the Electron Transport Layer for Application in High‐Performance Perovskite Solar Cells

Abstract The electron transport layer (ETL) is a key component of regular perovskite solar cells to promote the overall charge extraction efficiency and tune the crystallinity of the perovskite layer for better device performance. The authors present a novel protocol of ETL engineering by incorporat...

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Autores principales:	Zhichao Lin, Wenqi Zhang, Qingbin Cai, Xiangning Xu, Hongye Dong, Cheng Mu, Jian‐Ping Zhang
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	charge transfer doping electron transport layers perovskite solar cells precursors Science Q
Acceso en línea:	https://doaj.org/article/88a38145edd54f6c927554175cdfc454
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spelling	oai:doaj.org-article:88a38145edd54f6c927554175cdfc4542021-11-17T08:40:31ZPrecursor Engineering of the Electron Transport Layer for Application in High‐Performance Perovskite Solar Cells2198-384410.1002/advs.202102845https://doaj.org/article/88a38145edd54f6c927554175cdfc4542021-11-01T00:00:00Zhttps://doi.org/10.1002/advs.202102845https://doaj.org/toc/2198-3844Abstract The electron transport layer (ETL) is a key component of regular perovskite solar cells to promote the overall charge extraction efficiency and tune the crystallinity of the perovskite layer for better device performance. The authors present a novel protocol of ETL engineering by incorporating a composition of the perovskite precursor, methylammonium chloride (MACl), or formamidine chloride (FACl), into SnO2 layers, which are then converted into the crystal nuclei of perovskites by reaction with PbI2. The SnO2‐embedded nuclei remarkably improve the morphology and crystallinity of the optically active perovskite layers. The improved ETL‐to‐perovskite electrical contact and dense packing of large‐grained perovskites enhance the carrier mobility and suppress charge recombination. The power conversion efficiency increases from 20.12% (blank device) to 21.87% (21.72%) for devices with MACl (FACl) as an ETL dopant. Moreover, all the precursor‐engineered cells exhibit a record‐high fill factor (82%).Zhichao LinWenqi ZhangQingbin CaiXiangning XuHongye DongCheng MuJian‐Ping ZhangWileyarticlecharge transferdopingelectron transport layersperovskite solar cellsprecursorsScienceQENAdvanced Science, Vol 8, Iss 22, Pp n/a-n/a (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	charge transfer doping electron transport layers perovskite solar cells precursors Science Q
spellingShingle	charge transfer doping electron transport layers perovskite solar cells precursors Science Q Zhichao Lin Wenqi Zhang Qingbin Cai Xiangning Xu Hongye Dong Cheng Mu Jian‐Ping Zhang Precursor Engineering of the Electron Transport Layer for Application in High‐Performance Perovskite Solar Cells
description	Abstract The electron transport layer (ETL) is a key component of regular perovskite solar cells to promote the overall charge extraction efficiency and tune the crystallinity of the perovskite layer for better device performance. The authors present a novel protocol of ETL engineering by incorporating a composition of the perovskite precursor, methylammonium chloride (MACl), or formamidine chloride (FACl), into SnO2 layers, which are then converted into the crystal nuclei of perovskites by reaction with PbI2. The SnO2‐embedded nuclei remarkably improve the morphology and crystallinity of the optically active perovskite layers. The improved ETL‐to‐perovskite electrical contact and dense packing of large‐grained perovskites enhance the carrier mobility and suppress charge recombination. The power conversion efficiency increases from 20.12% (blank device) to 21.87% (21.72%) for devices with MACl (FACl) as an ETL dopant. Moreover, all the precursor‐engineered cells exhibit a record‐high fill factor (82%).
format	article
author	Zhichao Lin Wenqi Zhang Qingbin Cai Xiangning Xu Hongye Dong Cheng Mu Jian‐Ping Zhang
author_facet	Zhichao Lin Wenqi Zhang Qingbin Cai Xiangning Xu Hongye Dong Cheng Mu Jian‐Ping Zhang
author_sort	Zhichao Lin
title	Precursor Engineering of the Electron Transport Layer for Application in High‐Performance Perovskite Solar Cells
title_short	Precursor Engineering of the Electron Transport Layer for Application in High‐Performance Perovskite Solar Cells
title_full	Precursor Engineering of the Electron Transport Layer for Application in High‐Performance Perovskite Solar Cells
title_fullStr	Precursor Engineering of the Electron Transport Layer for Application in High‐Performance Perovskite Solar Cells
title_full_unstemmed	Precursor Engineering of the Electron Transport Layer for Application in High‐Performance Perovskite Solar Cells
title_sort	precursor engineering of the electron transport layer for application in high‐performance perovskite solar cells
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/88a38145edd54f6c927554175cdfc454
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Precursor Engineering of the Electron Transport Layer for Application in High‐Performance Perovskite Solar Cells

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