Silver and potassium incorporation in double-layer solution-processed Cu2ZnSnS4 solar cell

Ahmad Ibrahim; Asim Guchhait; Shreyash Hadke; Hwee Leng Seng; Lydia Helena Wong

doi:10.1021/acsaem.0c01165

Silver and potassium incorporation in double-layer solution-processed Cu₂ZnSnS₄ solar cell

Ahmad Ibrahim, Asim Guchhait, Shreyash Hadke, Hwee Leng Seng, Lydia Helena Wong^*

^*Corresponding author for this work

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

21 Citations (Scopus)

Abstract

Large open-circuit voltage (V_OC) deficit has been widely regarded as the main hindrance to realize the full potential of the low-cost and environmental-friendly Cu₂ZnSnS₄ (CZTS) solar cell. Alloying and doping are seen as promising pathways to reduce the harmful defects in CZTS and the V_OC deficit. In this study, we demonstrate the fabrication of double-layer CZTS alloyed with silver and doped with potassium (ACZTS-KCZTS). The device shows an increase in V_OC relative to its corresponding Shockley-Queisser limit (V_OC/V_OC,SQ) and improvement of short-circuit current (J_SC) compared to the CZTS reference to realize an optimized active area device efficiency of 8.24%. The avoidance of void formation and improved carrier collection in the bulk and interface region contributed to performance improvement. This double-layer configuration could be a viable route for codoping using other elements.

Original language	English
Pages (from-to)	10402-10407
Number of pages	6
Journal	ACS Applied Energy Materials
Volume	3
Issue number	11
DOIs	https://doi.org/10.1021/acsaem.0c01165
Publication status	Published - Nov 23 2020
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2020 American Chemical Society

ASJC Scopus Subject Areas

Chemical Engineering (miscellaneous)
Energy Engineering and Power Technology
Electrochemistry
Electrical and Electronic Engineering
Materials Chemistry

Keywords

Cation substitution
CZTS
Kesterite
Solar cell
Thin film

Access to Document

10.1021/acsaem.0c01165

Cite this

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title = "Silver and potassium incorporation in double-layer solution-processed Cu2ZnSnS4 solar cell",

abstract = "Large open-circuit voltage (VOC) deficit has been widely regarded as the main hindrance to realize the full potential of the low-cost and environmental-friendly Cu2ZnSnS4 (CZTS) solar cell. Alloying and doping are seen as promising pathways to reduce the harmful defects in CZTS and the VOC deficit. In this study, we demonstrate the fabrication of double-layer CZTS alloyed with silver and doped with potassium (ACZTS-KCZTS). The device shows an increase in VOC relative to its corresponding Shockley-Queisser limit (VOC/VOC,SQ) and improvement of short-circuit current (JSC) compared to the CZTS reference to realize an optimized active area device efficiency of 8.24%. The avoidance of void formation and improved carrier collection in the bulk and interface region contributed to performance improvement. This double-layer configuration could be a viable route for codoping using other elements.",

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AU - Ibrahim, Ahmad

AU - Guchhait, Asim

AU - Hadke, Shreyash

AU - Seng, Hwee Leng

AU - Wong, Lydia Helena

PY - 2020/11/23

Y1 - 2020/11/23

N2 - Large open-circuit voltage (VOC) deficit has been widely regarded as the main hindrance to realize the full potential of the low-cost and environmental-friendly Cu2ZnSnS4 (CZTS) solar cell. Alloying and doping are seen as promising pathways to reduce the harmful defects in CZTS and the VOC deficit. In this study, we demonstrate the fabrication of double-layer CZTS alloyed with silver and doped with potassium (ACZTS-KCZTS). The device shows an increase in VOC relative to its corresponding Shockley-Queisser limit (VOC/VOC,SQ) and improvement of short-circuit current (JSC) compared to the CZTS reference to realize an optimized active area device efficiency of 8.24%. The avoidance of void formation and improved carrier collection in the bulk and interface region contributed to performance improvement. This double-layer configuration could be a viable route for codoping using other elements.

AB - Large open-circuit voltage (VOC) deficit has been widely regarded as the main hindrance to realize the full potential of the low-cost and environmental-friendly Cu2ZnSnS4 (CZTS) solar cell. Alloying and doping are seen as promising pathways to reduce the harmful defects in CZTS and the VOC deficit. In this study, we demonstrate the fabrication of double-layer CZTS alloyed with silver and doped with potassium (ACZTS-KCZTS). The device shows an increase in VOC relative to its corresponding Shockley-Queisser limit (VOC/VOC,SQ) and improvement of short-circuit current (JSC) compared to the CZTS reference to realize an optimized active area device efficiency of 8.24%. The avoidance of void formation and improved carrier collection in the bulk and interface region contributed to performance improvement. This double-layer configuration could be a viable route for codoping using other elements.

KW - Cation substitution

KW - CZTS

KW - Kesterite

KW - Solar cell

KW - Thin film

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