Enhancement of Open-Circuit Voltage of Solution-Processed Cu2ZnSnS4 Solar Cells with 7.2% Efficiency by Incorporation of Silver

Asim Guchhait; Zhenghua Su; Ying Fan Tay; Sudhanshu Shukla; Wenjie Li; Shin Woei Leow; Joel Ming Rui Tan; Stener Lie; Oki Gunawan; Lydia Helena Wong

doi:10.1021/acsenergylett.6b00509

Enhancement of Open-Circuit Voltage of Solution-Processed Cu₂ZnSnS₄ Solar Cells with 7.2% Efficiency by Incorporation of Silver

Asim Guchhait, Zhenghua Su, Ying Fan Tay, Sudhanshu Shukla, Wenjie Li, Shin Woei Leow, Joel Ming Rui Tan, Stener Lie, Oki Gunawan, Lydia Helena Wong^*

^*Corresponding author for this work

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

148 Citations (Scopus)

Abstract

Recently, considerable attention in the development of Cu₂ZnSnS₄ (CZTS)-based thin-film solar cells has been given to the reduction of antisite defects via cation substitution. In this Letter, we report the substitution of copper atoms by silver, incorporated into the crystal lattice through a solution processable method. We observe an increase in open-circuit voltage (V_OC) by 50 mV and an accompanying rise in device efficiency from 4.9% to 7.2%. The incorporation of Ag is found to improve the grain size, enhance the depletion width of the pn-junction, and reduce the concentration of antisite defect states. This work demonstrates the promising role of Ag in reducing the V_OC deficit of Cu-kesterite thin-film solar cells.

Original language	English
Pages (from-to)	1256-1261
Number of pages	6
Journal	ACS Energy Letters
Volume	1
Issue number	6
DOIs	https://doi.org/10.1021/acsenergylett.6b00509
Publication status	Published - Dec 9 2016
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2016 American Chemical Society.

ASJC Scopus Subject Areas

Chemistry (miscellaneous)
Renewable Energy, Sustainability and the Environment
Fuel Technology
Energy Engineering and Power Technology
Materials Chemistry

UN SDGs

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

Access to Document

10.1021/acsenergylett.6b00509

Cite this

@article{1b806c964ddc4f55ac113cbfb9d69a90,

title = "Enhancement of Open-Circuit Voltage of Solution-Processed Cu2ZnSnS4 Solar Cells with 7.2% Efficiency by Incorporation of Silver",

abstract = "Recently, considerable attention in the development of Cu2ZnSnS4 (CZTS)-based thin-film solar cells has been given to the reduction of antisite defects via cation substitution. In this Letter, we report the substitution of copper atoms by silver, incorporated into the crystal lattice through a solution processable method. We observe an increase in open-circuit voltage (VOC) by 50 mV and an accompanying rise in device efficiency from 4.9% to 7.2%. The incorporation of Ag is found to improve the grain size, enhance the depletion width of the pn-junction, and reduce the concentration of antisite defect states. This work demonstrates the promising role of Ag in reducing the VOC deficit of Cu-kesterite thin-film solar cells.",

author = "Asim Guchhait and Zhenghua Su and Tay, {Ying Fan} and Sudhanshu Shukla and Wenjie Li and Leow, {Shin Woei} and Tan, {Joel Ming Rui} and Stener Lie and Oki Gunawan and Wong, {Lydia Helena}",

note = "Publisher Copyright: {\textcopyright} 2016 American Chemical Society.",

year = "2016",

month = dec,

day = "9",

doi = "10.1021/acsenergylett.6b00509",

language = "English",

volume = "1",

pages = "1256--1261",

journal = "ACS Energy Letters",

issn = "2380-8195",

publisher = "American Chemical Society",

number = "6",

}

TY - JOUR

T1 - Enhancement of Open-Circuit Voltage of Solution-Processed Cu2ZnSnS4 Solar Cells with 7.2% Efficiency by Incorporation of Silver

AU - Guchhait, Asim

AU - Su, Zhenghua

AU - Tay, Ying Fan

AU - Shukla, Sudhanshu

AU - Li, Wenjie

AU - Leow, Shin Woei

AU - Tan, Joel Ming Rui

AU - Lie, Stener

AU - Gunawan, Oki

AU - Wong, Lydia Helena

PY - 2016/12/9

Y1 - 2016/12/9

N2 - Recently, considerable attention in the development of Cu2ZnSnS4 (CZTS)-based thin-film solar cells has been given to the reduction of antisite defects via cation substitution. In this Letter, we report the substitution of copper atoms by silver, incorporated into the crystal lattice through a solution processable method. We observe an increase in open-circuit voltage (VOC) by 50 mV and an accompanying rise in device efficiency from 4.9% to 7.2%. The incorporation of Ag is found to improve the grain size, enhance the depletion width of the pn-junction, and reduce the concentration of antisite defect states. This work demonstrates the promising role of Ag in reducing the VOC deficit of Cu-kesterite thin-film solar cells.

AB - Recently, considerable attention in the development of Cu2ZnSnS4 (CZTS)-based thin-film solar cells has been given to the reduction of antisite defects via cation substitution. In this Letter, we report the substitution of copper atoms by silver, incorporated into the crystal lattice through a solution processable method. We observe an increase in open-circuit voltage (VOC) by 50 mV and an accompanying rise in device efficiency from 4.9% to 7.2%. The incorporation of Ag is found to improve the grain size, enhance the depletion width of the pn-junction, and reduce the concentration of antisite defect states. This work demonstrates the promising role of Ag in reducing the VOC deficit of Cu-kesterite thin-film solar cells.

UR - http://www.scopus.com/inward/record.url?scp=85014568969&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85014568969&partnerID=8YFLogxK

U2 - 10.1021/acsenergylett.6b00509

DO - 10.1021/acsenergylett.6b00509

M3 - Article

AN - SCOPUS:85014568969

SN - 2380-8195

VL - 1

SP - 1256

EP - 1261

JO - ACS Energy Letters

JF - ACS Energy Letters

IS - 6

ER -