Additive Engineering in Antisolvent for Widening the Processing Window and Promoting Perovskite Seed Formation in Perovskite Solar Cells

Cong Chen; Zhiwen Zhou; Yue Jiang; Yancong Feng; Yating Fang; Jiayan Liu; Mojun Chen; Junming Liu; Jinwei Gao; Shien-Ping Feng

doi:10.1021/acsami.2c00954

Additive Engineering in Antisolvent for Widening the Processing Window and Promoting Perovskite Seed Formation in Perovskite Solar Cells

Cong Chen, Zhiwen Zhou, Yue Jiang^*, Yancong Feng^*, Yating Fang, Jiayan Liu, Mojun Chen, Junming Liu, Jinwei Gao^*, Shien-Ping Feng^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

25 Citations (Scopus)

Abstract

The chlorobenzene (CB) antisolvent is widely used to fabricate high-efficiency perovskite solar cells (PSCs). However, the narrow processing window and the strict volume ratio of a binary mixed solvent limit the fabrication of large-area and high-quality perovskite films. In this work, by systematic investigation of additives with the CB antisolvent, a universal guideline is achieved wherein a small amount of additive with a donor number between 9.0 and 27.0 kcal/mol can significantly widen the antisolvent treating time slot from 2 to 40 s while simultaneously enlarging the processor binary mixed solvent (dimethylformamide/dimethyl sulfoxide) from 7:3 to 0:10. Moreover, this process facilitates the formation of perovskite seeds as templates for perovskite crystal growth, effectively reducing the bulk defects in perovskite films. Finally, the obtained PSCs show remarkable power conversion efficiencies (PCEs) of 22.22 and 19.74% for rigid and flexible devices, respectively.

Original language	English
Pages (from-to)	17348-17357
Journal	ACS Applied Materials and Interfaces
Volume	14
Issue number	15
Online published	7 Apr 2022
DOIs	https://doi.org/10.1021/acsami.2c00954
Publication status	Published - 20 Apr 2022

Funding

This work is supported by grants from the Hong Kong Collaborative Research Fund (CRF C7018-20GF), Research Grants Council NSFC Fund (U1801256, 51803064), Science and Technology Program of Guangzhou (2019050001, 202002030130), International Cooperation Project of Guangdong Province (2020A0505100054), and Guangdong Provincial Key Laboratory of Optical Information Materials and Technology (2017B030301007). We also acknowledge the support received from the Guangdong Provincial Engineering Technology Research Center for Transparent Conductive Materials.

UN SDGs

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

SDG 7 Affordable and Clean Energy

Research Keywords

flexible devices
mixed antisolvent engineering
perovskites
processing window

RGC Funding Information

RGC-funded

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10.1021/acsami.2c00954

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title = "Additive Engineering in Antisolvent for Widening the Processing Window and Promoting Perovskite Seed Formation in Perovskite Solar Cells",

abstract = "The chlorobenzene (CB) antisolvent is widely used to fabricate high-efficiency perovskite solar cells (PSCs). However, the narrow processing window and the strict volume ratio of a binary mixed solvent limit the fabrication of large-area and high-quality perovskite films. In this work, by systematic investigation of additives with the CB antisolvent, a universal guideline is achieved wherein a small amount of additive with a donor number between 9.0 and 27.0 kcal/mol can significantly widen the antisolvent treating time slot from 2 to 40 s while simultaneously enlarging the processor binary mixed solvent (dimethylformamide/dimethyl sulfoxide) from 7:3 to 0:10. Moreover, this process facilitates the formation of perovskite seeds as templates for perovskite crystal growth, effectively reducing the bulk defects in perovskite films. Finally, the obtained PSCs show remarkable power conversion efficiencies (PCEs) of 22.22 and 19.74% for rigid and flexible devices, respectively.",

keywords = "flexible devices, mixed antisolvent engineering, perovskites, processing window",

author = "Cong Chen and Zhiwen Zhou and Yue Jiang and Yancong Feng and Yating Fang and Jiayan Liu and Mojun Chen and Junming Liu and Jinwei Gao and Shien-Ping Feng",

year = "2022",

month = apr,

day = "20",

doi = "10.1021/acsami.2c00954",

language = "English",

volume = "14",

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journal = "ACS Applied Materials and Interfaces",

issn = "1944-8244",

publisher = "American Chemical Society",

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Additive Engineering in Antisolvent for Widening the Processing Window and Promoting Perovskite Seed Formation in Perovskite Solar Cells. / Chen, Cong; Zhou, Zhiwen; Jiang, Yue et al.
In: ACS Applied Materials and Interfaces, Vol. 14, No. 15, 20.04.2022, p. 17348-17357.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

TY - JOUR

T1 - Additive Engineering in Antisolvent for Widening the Processing Window and Promoting Perovskite Seed Formation in Perovskite Solar Cells

AU - Chen, Cong

AU - Zhou, Zhiwen

AU - Jiang, Yue

AU - Feng, Yancong

AU - Fang, Yating

AU - Liu, Jiayan

AU - Chen, Mojun

AU - Liu, Junming

AU - Gao, Jinwei

AU - Feng, Shien-Ping

PY - 2022/4/20

Y1 - 2022/4/20

N2 - The chlorobenzene (CB) antisolvent is widely used to fabricate high-efficiency perovskite solar cells (PSCs). However, the narrow processing window and the strict volume ratio of a binary mixed solvent limit the fabrication of large-area and high-quality perovskite films. In this work, by systematic investigation of additives with the CB antisolvent, a universal guideline is achieved wherein a small amount of additive with a donor number between 9.0 and 27.0 kcal/mol can significantly widen the antisolvent treating time slot from 2 to 40 s while simultaneously enlarging the processor binary mixed solvent (dimethylformamide/dimethyl sulfoxide) from 7:3 to 0:10. Moreover, this process facilitates the formation of perovskite seeds as templates for perovskite crystal growth, effectively reducing the bulk defects in perovskite films. Finally, the obtained PSCs show remarkable power conversion efficiencies (PCEs) of 22.22 and 19.74% for rigid and flexible devices, respectively.

AB - The chlorobenzene (CB) antisolvent is widely used to fabricate high-efficiency perovskite solar cells (PSCs). However, the narrow processing window and the strict volume ratio of a binary mixed solvent limit the fabrication of large-area and high-quality perovskite films. In this work, by systematic investigation of additives with the CB antisolvent, a universal guideline is achieved wherein a small amount of additive with a donor number between 9.0 and 27.0 kcal/mol can significantly widen the antisolvent treating time slot from 2 to 40 s while simultaneously enlarging the processor binary mixed solvent (dimethylformamide/dimethyl sulfoxide) from 7:3 to 0:10. Moreover, this process facilitates the formation of perovskite seeds as templates for perovskite crystal growth, effectively reducing the bulk defects in perovskite films. Finally, the obtained PSCs show remarkable power conversion efficiencies (PCEs) of 22.22 and 19.74% for rigid and flexible devices, respectively.

KW - flexible devices

KW - mixed antisolvent engineering

KW - perovskites

KW - processing window

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U2 - 10.1021/acsami.2c00954

DO - 10.1021/acsami.2c00954

M3 - RGC 21 - Publication in refereed journal

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SN - 1944-8244

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EP - 17357

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

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ER -

Additive Engineering in Antisolvent for Widening the Processing Window and Promoting Perovskite Seed Formation in Perovskite Solar Cells

Abstract

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