Benefits of fullerene/SnO2 bilayers as electron transport layer for efficient planar perovskite solar cells

Yun Chen; Cong Xu; Jian Xiong; Zheling Zhang; Xiuyun Zhang; Junliang Yang; Xiaogang Xue; Dong Yang; Jian Zhang

doi:10.1016/j.orgel.2018.03.041

Benefits of fullerene/SnO₂ bilayers as electron transport layer for efficient planar perovskite solar cells

Yun Chen, Cong Xu, Jian Xiong, Zheling Zhang, Xiuyun Zhang, Junliang Yang, Xiaogang Xue, Dong Yang, Jian Zhang

Materials Science and Engineering

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

31 Scopus citations

Abstract

The low temperature-processed electron transport layers are crucial to the commercial perovskite solar cells (PSCs). PC₆₀BM/SnO₂ bilayer electron transport layer (ETL) has gradually been reported, but the mechanism of enhancement by the introducing PC₆₀BM on SnO₂ is not fully understudied. In this work, low temperature PC₆₀BM/SnO₂ bilayer ETLs are successfully prepared via a solution process. The introduction of PC₆₀BM dramatically enhances the performance of the planar PSCs, and the reason has been systemically investigated. The results show that the existence of PC₆₀BM could enhance the crystalline quality and grain boundary integration in perovskite films. The J-V analysis, absorption spectra, photoluminescence spectra and time-resolved photoluminescence spectra show that both the light harvesting of perovskite films and carrier extraction from perovskite films to PC₆₀BM/SnO₂ bilayer have been enhanced. Otherwise, perovskite films on ITO/SnO₂/PC₆₀BM substrate have a lower trap state density and higher electron mobility than those of ITO/SnO₂ substrate or bare ITO substrate. All the results suggest that low temperature-processed PC₆₀BM/SnO₂ ETLs will benefit the performance of PSCs and promote the commercial application of planar PSCs.

Original language	English (US)
Pages (from-to)	294-300
Number of pages	7
Journal	Organic Electronics
Volume	58
DOIs	https://doi.org/10.1016/j.orgel.2018.03.041
State	Published - Jul 2018

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Biomaterials
General Chemistry
Condensed Matter Physics
Materials Chemistry
Electrical and Electronic Engineering

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10.1016/j.orgel.2018.03.041

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title = "Benefits of fullerene/SnO2 bilayers as electron transport layer for efficient planar perovskite solar cells",

abstract = "The low temperature-processed electron transport layers are crucial to the commercial perovskite solar cells (PSCs). PC60BM/SnO2 bilayer electron transport layer (ETL) has gradually been reported, but the mechanism of enhancement by the introducing PC60BM on SnO2 is not fully understudied. In this work, low temperature PC60BM/SnO2 bilayer ETLs are successfully prepared via a solution process. The introduction of PC60BM dramatically enhances the performance of the planar PSCs, and the reason has been systemically investigated. The results show that the existence of PC60BM could enhance the crystalline quality and grain boundary integration in perovskite films. The J-V analysis, absorption spectra, photoluminescence spectra and time-resolved photoluminescence spectra show that both the light harvesting of perovskite films and carrier extraction from perovskite films to PC60BM/SnO2 bilayer have been enhanced. Otherwise, perovskite films on ITO/SnO2/PC60BM substrate have a lower trap state density and higher electron mobility than those of ITO/SnO2 substrate or bare ITO substrate. All the results suggest that low temperature-processed PC60BM/SnO2 ETLs will benefit the performance of PSCs and promote the commercial application of planar PSCs.",

author = "Yun Chen and Cong Xu and Jian Xiong and Zheling Zhang and Xiuyun Zhang and Junliang Yang and Xiaogang Xue and Dong Yang and Jian Zhang",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = jul,

doi = "10.1016/j.orgel.2018.03.041",

language = "English (US)",

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T1 - Benefits of fullerene/SnO2 bilayers as electron transport layer for efficient planar perovskite solar cells

AU - Chen, Yun

AU - Xu, Cong

AU - Xiong, Jian

AU - Zhang, Zheling

AU - Zhang, Xiuyun

AU - Yang, Junliang

AU - Xue, Xiaogang

AU - Yang, Dong

AU - Zhang, Jian

PY - 2018/7

Y1 - 2018/7

N2 - The low temperature-processed electron transport layers are crucial to the commercial perovskite solar cells (PSCs). PC60BM/SnO2 bilayer electron transport layer (ETL) has gradually been reported, but the mechanism of enhancement by the introducing PC60BM on SnO2 is not fully understudied. In this work, low temperature PC60BM/SnO2 bilayer ETLs are successfully prepared via a solution process. The introduction of PC60BM dramatically enhances the performance of the planar PSCs, and the reason has been systemically investigated. The results show that the existence of PC60BM could enhance the crystalline quality and grain boundary integration in perovskite films. The J-V analysis, absorption spectra, photoluminescence spectra and time-resolved photoluminescence spectra show that both the light harvesting of perovskite films and carrier extraction from perovskite films to PC60BM/SnO2 bilayer have been enhanced. Otherwise, perovskite films on ITO/SnO2/PC60BM substrate have a lower trap state density and higher electron mobility than those of ITO/SnO2 substrate or bare ITO substrate. All the results suggest that low temperature-processed PC60BM/SnO2 ETLs will benefit the performance of PSCs and promote the commercial application of planar PSCs.

AB - The low temperature-processed electron transport layers are crucial to the commercial perovskite solar cells (PSCs). PC60BM/SnO2 bilayer electron transport layer (ETL) has gradually been reported, but the mechanism of enhancement by the introducing PC60BM on SnO2 is not fully understudied. In this work, low temperature PC60BM/SnO2 bilayer ETLs are successfully prepared via a solution process. The introduction of PC60BM dramatically enhances the performance of the planar PSCs, and the reason has been systemically investigated. The results show that the existence of PC60BM could enhance the crystalline quality and grain boundary integration in perovskite films. The J-V analysis, absorption spectra, photoluminescence spectra and time-resolved photoluminescence spectra show that both the light harvesting of perovskite films and carrier extraction from perovskite films to PC60BM/SnO2 bilayer have been enhanced. Otherwise, perovskite films on ITO/SnO2/PC60BM substrate have a lower trap state density and higher electron mobility than those of ITO/SnO2 substrate or bare ITO substrate. All the results suggest that low temperature-processed PC60BM/SnO2 ETLs will benefit the performance of PSCs and promote the commercial application of planar PSCs.

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Benefits of fullerene/SnO₂ bilayers as electron transport layer for efficient planar perovskite solar cells

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