Radical Form of PbI2: A New Defect Passivator for Efficient Perovskite Solar Cells

Xiu Xiu Feng; Jiyao Wei; Xiaodong Li; Wenxiao Zhang; Xiaoyan Zhao; Chunyan Lu; Xuemin Guo; Junfeng Fang

doi:10.1021/acsami.1c12764

Radical Form of PbI₂: A New Defect Passivator for Efficient Perovskite Solar Cells

Xiu Xiu Feng
, Jiyao Wei
, Xiaodong Li^*
, Wenxiao Zhang
, Xiaoyan Zhao
, Chunyan Lu
, Xuemin Guo
, Junfeng Fang^*

^*Corresponding author for this work

School of Physics and Electronic Science

East China Normal University

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

PbI₂is a commonly used passivator for defect passivation in perovskite solar cells (PSCs). However, the poor conductivity nature of PbI₂may limit the further improvement of device performance. Here, we report a radical form of PbI₂with high conductivity to passivate defects for efficient PSCs through a combination ofN,N,N′,N′-tetramethylbenzidine (TMB). When PbI₂is combined with TMB, 4 orders of magnitude higher conductivity will be achieved owing to the formation of a TMB-PbI₂radical. As a result, the device performance is impressively increased from 20.48 to 22.63%. In addition, the device stability is also greatly improved and 95% of the initial efficiency is retained after aging at 85 °C for 600 h.

Original language	English
Pages (from-to)	46627-46633
Number of pages	7
Journal	ACS Applied Materials and Interfaces
Volume	13
Issue number	39
DOIs	https://doi.org/10.1021/acsami.1c12764
State	Published - 6 Oct 2021

Keywords

PbI2 radical
charge transport
conductivity
defect passivation
high efficiency

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10.1021/acsami.1c12764

Cite this

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title = "Radical Form of PbI2: A New Defect Passivator for Efficient Perovskite Solar Cells",

abstract = "PbI2is a commonly used passivator for defect passivation in perovskite solar cells (PSCs). However, the poor conductivity nature of PbI2may limit the further improvement of device performance. Here, we report a radical form of PbI2with high conductivity to passivate defects for efficient PSCs through a combination ofN,N,N′,N′-tetramethylbenzidine (TMB). When PbI2is combined with TMB, 4 orders of magnitude higher conductivity will be achieved owing to the formation of a TMB-PbI2radical. As a result, the device performance is impressively increased from 20.48 to 22.63\%. In addition, the device stability is also greatly improved and 95\% of the initial efficiency is retained after aging at 85 °C for 600 h.",

keywords = "PbI2 radical, charge transport, conductivity, defect passivation, high efficiency",

author = "Feng, \{Xiu Xiu\} and Jiyao Wei and Xiaodong Li and Wenxiao Zhang and Xiaoyan Zhao and Chunyan Lu and Xuemin Guo and Junfeng Fang",

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year = "2021",

month = oct,

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doi = "10.1021/acsami.1c12764",

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TY - JOUR

T1 - Radical Form of PbI2

T2 - A New Defect Passivator for Efficient Perovskite Solar Cells

AU - Feng, Xiu Xiu

AU - Wei, Jiyao

AU - Li, Xiaodong

AU - Zhang, Wenxiao

AU - Zhao, Xiaoyan

AU - Lu, Chunyan

AU - Guo, Xuemin

AU - Fang, Junfeng

PY - 2021/10/6

Y1 - 2021/10/6

N2 - PbI2is a commonly used passivator for defect passivation in perovskite solar cells (PSCs). However, the poor conductivity nature of PbI2may limit the further improvement of device performance. Here, we report a radical form of PbI2with high conductivity to passivate defects for efficient PSCs through a combination ofN,N,N′,N′-tetramethylbenzidine (TMB). When PbI2is combined with TMB, 4 orders of magnitude higher conductivity will be achieved owing to the formation of a TMB-PbI2radical. As a result, the device performance is impressively increased from 20.48 to 22.63%. In addition, the device stability is also greatly improved and 95% of the initial efficiency is retained after aging at 85 °C for 600 h.

AB - PbI2is a commonly used passivator for defect passivation in perovskite solar cells (PSCs). However, the poor conductivity nature of PbI2may limit the further improvement of device performance. Here, we report a radical form of PbI2with high conductivity to passivate defects for efficient PSCs through a combination ofN,N,N′,N′-tetramethylbenzidine (TMB). When PbI2is combined with TMB, 4 orders of magnitude higher conductivity will be achieved owing to the formation of a TMB-PbI2radical. As a result, the device performance is impressively increased from 20.48 to 22.63%. In addition, the device stability is also greatly improved and 95% of the initial efficiency is retained after aging at 85 °C for 600 h.

KW - PbI2 radical

KW - charge transport

KW - conductivity

KW - defect passivation

KW - high efficiency

UR - https://www.scopus.com/pages/publications/85116718698

U2 - 10.1021/acsami.1c12764

DO - 10.1021/acsami.1c12764

M3 - 文章

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AN - SCOPUS:85116718698

SN - 1944-8244

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EP - 46633

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

IS - 39

ER -

Radical Form of PbI₂: A New Defect Passivator for Efficient Perovskite Solar Cells

Abstract

Keywords

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