Solution-processed kesterite Cu2ZnSnS4 as efficient hole extraction layer for inverted perovskite solar cells

Xin Li; Xingyue Zhao; Youchen Gu; Xuewen Yin; Hui Nan; Meiqian Tai; Hui Chen; Heping Shen; Hong Lin

doi:10.1246/cl.180219

Solution-processed kesterite Cu₂ZnSnS₄ as efficient hole extraction layer for inverted perovskite solar cells

Xin Li, Xingyue Zhao, Youchen Gu, Xuewen Yin, Hui Nan, Meiqian Tai, Hui Chen, Heping Shen^*, Hong Lin

^*Corresponding author for this work

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

10 Citations (Scopus)

Abstract

The hole extraction layer (HEL) plays a critical role in determining the charge extraction in inverted perovskite solar cells (PSCs) besides affecting the perovskite crystallization. Herein, we demonstrate efficient inverted perovskite solar cells based on solution-processed kesterite Cu₂ZnSnS₄ (CZTS) as the HEL for the first time. We achieved CZTS HEL with desired phase purity and optimal film coverage by optimizing the spin-coating process. Moreover, photoluminescence (PL) studies indicate that the CZTS HEL developed in this work provides superior hole extraction in comparison with the widely reported NiO_x. This ultimately results in a respectable power conversion efficiency of 13.75% for the proof-of-concept device, reaching a level that is comparable to that of the NiO_x-based device.

Original language	English
Pages (from-to)	817-820
Number of pages	4
Journal	Chemistry Letters
Volume	47
Issue number	6
DOIs	https://doi.org/10.1246/cl.180219
Publication status	Published - 2018

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title = "Solution-processed kesterite Cu2ZnSnS4 as efficient hole extraction layer for inverted perovskite solar cells",

abstract = "The hole extraction layer (HEL) plays a critical role in determining the charge extraction in inverted perovskite solar cells (PSCs) besides affecting the perovskite crystallization. Herein, we demonstrate efficient inverted perovskite solar cells based on solution-processed kesterite Cu2ZnSnS4 (CZTS) as the HEL for the first time. We achieved CZTS HEL with desired phase purity and optimal film coverage by optimizing the spin-coating process. Moreover, photoluminescence (PL) studies indicate that the CZTS HEL developed in this work provides superior hole extraction in comparison with the widely reported NiOx. This ultimately results in a respectable power conversion efficiency of 13.75% for the proof-of-concept device, reaching a level that is comparable to that of the NiOx-based device.",

keywords = "Hole extraction layer, Kesterite, Perovskite solar cell",

author = "Xin Li and Xingyue Zhao and Youchen Gu and Xuewen Yin and Hui Nan and Meiqian Tai and Hui Chen and Heping Shen and Hong Lin",

note = "Publisher Copyright: {\textcopyright} 2018 The Chemical Society of Japan.",

year = "2018",

doi = "10.1246/cl.180219",

language = "English",

volume = "47",

pages = "817--820",

journal = "Chemistry Letters",

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T1 - Solution-processed kesterite Cu2ZnSnS4 as efficient hole extraction layer for inverted perovskite solar cells

AU - Li, Xin

AU - Zhao, Xingyue

AU - Gu, Youchen

AU - Yin, Xuewen

AU - Nan, Hui

AU - Tai, Meiqian

AU - Chen, Hui

AU - Shen, Heping

AU - Lin, Hong

PY - 2018

Y1 - 2018

N2 - The hole extraction layer (HEL) plays a critical role in determining the charge extraction in inverted perovskite solar cells (PSCs) besides affecting the perovskite crystallization. Herein, we demonstrate efficient inverted perovskite solar cells based on solution-processed kesterite Cu2ZnSnS4 (CZTS) as the HEL for the first time. We achieved CZTS HEL with desired phase purity and optimal film coverage by optimizing the spin-coating process. Moreover, photoluminescence (PL) studies indicate that the CZTS HEL developed in this work provides superior hole extraction in comparison with the widely reported NiOx. This ultimately results in a respectable power conversion efficiency of 13.75% for the proof-of-concept device, reaching a level that is comparable to that of the NiOx-based device.

AB - The hole extraction layer (HEL) plays a critical role in determining the charge extraction in inverted perovskite solar cells (PSCs) besides affecting the perovskite crystallization. Herein, we demonstrate efficient inverted perovskite solar cells based on solution-processed kesterite Cu2ZnSnS4 (CZTS) as the HEL for the first time. We achieved CZTS HEL with desired phase purity and optimal film coverage by optimizing the spin-coating process. Moreover, photoluminescence (PL) studies indicate that the CZTS HEL developed in this work provides superior hole extraction in comparison with the widely reported NiOx. This ultimately results in a respectable power conversion efficiency of 13.75% for the proof-of-concept device, reaching a level that is comparable to that of the NiOx-based device.

KW - Hole extraction layer

KW - Kesterite

KW - Perovskite solar cell

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U2 - 10.1246/cl.180219

DO - 10.1246/cl.180219

M3 - Article

SN - 0366-7022

VL - 47

SP - 817

EP - 820

JO - Chemistry Letters

JF - Chemistry Letters

IS - 6

ER -

Solution-processed kesterite Cu₂ZnSnS₄ as efficient hole extraction layer for inverted perovskite solar cells

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