Improved crystallinity of perovskite via molecularly tailored surface modification of SnO2

Detao Liu; Hualin Zheng; Long Ji; Hao Chen; Yafei Wang; Peng Zhang; Feng Wang; Jiang Wu; Zhi Chen; Shibin Li

doi:10.1016/j.jpowsour.2019.227161

Improved crystallinity of perovskite via molecularly tailored surface modification of SnO₂

Detao Liu, Hualin Zheng, Long Ji, Hao Chen, Yafei Wang, Peng Zhang, Feng Wang, Jiang Wu, Zhi Chen, Shibin Li^*

^*Corresponding author for this work

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

23 Citations (Scopus)

Abstract

The photovoltaic performance of perovskite solar cells (PSCs) largely depends on the crystal grain size of perovskite films. Here, we use the mixture of n-octyltrimethoxysilane (OTES) and aminopropyltrimethoxysilane (APTES) to tailor the surface termination state of SnO₂ electron transport layer, and demonstrate the crystal grain size of perovskite is remarkably enlarged. The perovskite film with large crystal size shows a lower non-radical recombination density and a longer charge lifetime. The power conversion efficiency of PSCs is eventually improved from 18.21% to 20.3%. The proposed method may also impact other optoelectronic devices based perovskite films.

Original language	English
Article number	227161
Journal	Journal of Power Sources
Volume	441
DOIs	https://doi.org/10.1016/j.jpowsour.2019.227161
Publication status	Published - 30 Nov 2019
Externally published	Yes

Keywords

Crystalline
Perovskite solar cells
SnO
Surface terminal
Trimethoxysilane

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.jpowsour.2019.227161

Cite this

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title = "Improved crystallinity of perovskite via molecularly tailored surface modification of SnO2",

abstract = "The photovoltaic performance of perovskite solar cells (PSCs) largely depends on the crystal grain size of perovskite films. Here, we use the mixture of n-octyltrimethoxysilane (OTES) and aminopropyltrimethoxysilane (APTES) to tailor the surface termination state of SnO2 electron transport layer, and demonstrate the crystal grain size of perovskite is remarkably enlarged. The perovskite film with large crystal size shows a lower non-radical recombination density and a longer charge lifetime. The power conversion efficiency of PSCs is eventually improved from 18.21\% to 20.3\%. The proposed method may also impact other optoelectronic devices based perovskite films.",

keywords = "Crystalline, Perovskite solar cells, SnO, Surface terminal, Trimethoxysilane",

author = "Detao Liu and Hualin Zheng and Long Ji and Hao Chen and Yafei Wang and Peng Zhang and Feng Wang and Jiang Wu and Zhi Chen and Shibin Li",

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year = "2019",

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doi = "10.1016/j.jpowsour.2019.227161",

language = "English",

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T1 - Improved crystallinity of perovskite via molecularly tailored surface modification of SnO2

AU - Liu, Detao

AU - Zheng, Hualin

AU - Ji, Long

AU - Chen, Hao

AU - Wang, Yafei

AU - Zhang, Peng

AU - Wang, Feng

AU - Wu, Jiang

AU - Chen, Zhi

AU - Li, Shibin

PY - 2019/11/30

Y1 - 2019/11/30

N2 - The photovoltaic performance of perovskite solar cells (PSCs) largely depends on the crystal grain size of perovskite films. Here, we use the mixture of n-octyltrimethoxysilane (OTES) and aminopropyltrimethoxysilane (APTES) to tailor the surface termination state of SnO2 electron transport layer, and demonstrate the crystal grain size of perovskite is remarkably enlarged. The perovskite film with large crystal size shows a lower non-radical recombination density and a longer charge lifetime. The power conversion efficiency of PSCs is eventually improved from 18.21% to 20.3%. The proposed method may also impact other optoelectronic devices based perovskite films.

AB - The photovoltaic performance of perovskite solar cells (PSCs) largely depends on the crystal grain size of perovskite films. Here, we use the mixture of n-octyltrimethoxysilane (OTES) and aminopropyltrimethoxysilane (APTES) to tailor the surface termination state of SnO2 electron transport layer, and demonstrate the crystal grain size of perovskite is remarkably enlarged. The perovskite film with large crystal size shows a lower non-radical recombination density and a longer charge lifetime. The power conversion efficiency of PSCs is eventually improved from 18.21% to 20.3%. The proposed method may also impact other optoelectronic devices based perovskite films.

KW - Crystalline

KW - Perovskite solar cells

KW - SnO

KW - Surface terminal

KW - Trimethoxysilane

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DO - 10.1016/j.jpowsour.2019.227161

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