ALD ZnSnO buffer layer for enhancing heterojunction interface quality of CZTS solar cells

Xin Cui; Kaiwen Sun; Chang Yeh Lee; Chang Yan; Heng Sun; Yuanfang Zhang; Fangyang Liu; Martin Green; Bram Hoex; Xiaojing Hao

ALD ZnSnO buffer layer for enhancing heterojunction interface quality of CZTS solar cells

Xin Cui
, Kaiwen Sun
, Chang Yeh Lee
, Chang Yan
, Heng Sun
, Yuanfang Zhang
, Fangyang Liu
, Martin Green
, Bram Hoex
, Xiaojing Hao

Research output: Chapter in Book/Conference Proceeding/Report › Conference Paper published in a book › peer-review

Abstract

Kesterite Cu-{2}ZnSnS-{4}(CZTS) solar cells have emerged as a promising candidate for scalable thin-film solar cells development, mainly due to its outstanding performance and compatibility with CuInGaSe2 and CdTe solar cells while only consisting of earth-abundant and non-toxic constituents. Here we present a method to address the relative low V-{OC}of CZTS solar cells by applying atomic layer deposited Zn{}-{1-x}Sn-{x}O(ZTO) as a Cd-free buffer layer. X-ray photoelectron spectroscopy measurement is implemented to study the band alignment at the CZTS /ZTOhetero-interface. It shows that the favorable conduction band alignment of CZTS /ZTOresulted in increasing V-{OC}by up to 10 %. By optimizing the treatment of CZTS absorber before ZTO deposition, we finally obtained an efficiency of 9.3 % which is the highest efficiency so far reported for Cd- free pure sulphide CZTS solar cells to the best of our knowledge.Index Terms- ALD, ZnSnO, heterojunction, CZTS.

Original language	English
Title of host publication	2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1511-1513
Number of pages	3
ISBN (Electronic)	9781538685297
Publication status	Published - 26 Nov 2018
Externally published	Yes
Event	7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - Waikoloa Village, United States Duration: 10 Jun 2018 → 15 Jun 2018

Publication series

Name	2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC

Conference

Conference	7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018
Country/Territory	United States
City	Waikoloa Village
Period	10/06/18 → 15/06/18

Bibliographical note

Publisher Copyright:
© 2018 IEEE.

UN SDGs

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

SDG 7 Affordable and Clean Energy

Access to Document

https://hdl.handle.net/1783.1/122134

Cite this

Cui, X., Sun, K., Lee, C. Y., Yan, C., Sun, H., Zhang, Y., Liu, F., Green, M., Hoex, B., & Hao, X. (2018). ALD ZnSnO buffer layer for enhancing heterojunction interface quality of CZTS solar cells. In 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC (pp. 1511-1513). Article 8547988 (2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC). Institute of Electrical and Electronics Engineers Inc.. https://hdl.handle.net/1783.1/122134

Cui, Xin ; Sun, Kaiwen ; Lee, Chang Yeh et al. / ALD ZnSnO buffer layer for enhancing heterojunction interface quality of CZTS solar cells. 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC. Institute of Electrical and Electronics Engineers Inc., 2018. pp. 1511-1513 (2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC).

@inproceedings{146115ad56e44254bec42629c91afb11,

title = "ALD ZnSnO buffer layer for enhancing heterojunction interface quality of CZTS solar cells",

abstract = "Kesterite Cu-\{2\}ZnSnS-\{4\}(CZTS) solar cells have emerged as a promising candidate for scalable thin-film solar cells development, mainly due to its outstanding performance and compatibility with CuInGaSe2 and CdTe solar cells while only consisting of earth-abundant and non-toxic constituents. Here we present a method to address the relative low V-\{OC\}of CZTS solar cells by applying atomic layer deposited Zn\{\}-\{1-x\}Sn-\{x\}O(ZTO) as a Cd-free buffer layer. X-ray photoelectron spectroscopy measurement is implemented to study the band alignment at the CZTS /ZTOhetero-interface. It shows that the favorable conduction band alignment of CZTS /ZTOresulted in increasing V-\{OC\}by up to 10 \%. By optimizing the treatment of CZTS absorber before ZTO deposition, we finally obtained an efficiency of 9.3 \% which is the highest efficiency so far reported for Cd- free pure sulphide CZTS solar cells to the best of our knowledge.Index Terms- ALD, ZnSnO, heterojunction, CZTS.",

author = "Xin Cui and Kaiwen Sun and Lee, \{Chang Yeh\} and Chang Yan and Heng Sun and Yuanfang Zhang and Fangyang Liu and Martin Green and Bram Hoex and Xiaojing Hao",

note = "Publisher Copyright: {\textcopyright} 2018 IEEE.; 7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018 ; Conference date: 10-06-2018 Through 15-06-2018",

year = "2018",

month = nov,

day = "26",

language = "English",

series = "2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

pages = "1511--1513",

booktitle = "2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC",

}

Cui, X, Sun, K, Lee, CY, Yan, C, Sun, H, Zhang, Y, Liu, F, Green, M, Hoex, B & Hao, X 2018, ALD ZnSnO buffer layer for enhancing heterojunction interface quality of CZTS solar cells. in 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC., 8547988, 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC, Institute of Electrical and Electronics Engineers Inc., pp. 1511-1513, 7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018, Waikoloa Village, United States, 10/06/18. <https://hdl.handle.net/1783.1/122134>

ALD ZnSnO buffer layer for enhancing heterojunction interface quality of CZTS solar cells. / Cui, Xin; Sun, Kaiwen; Lee, Chang Yeh et al.
2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC. Institute of Electrical and Electronics Engineers Inc., 2018. p. 1511-1513 8547988 (2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC).

Research output: Chapter in Book/Conference Proceeding/Report › Conference Paper published in a book › peer-review

TY - GEN

T1 - ALD ZnSnO buffer layer for enhancing heterojunction interface quality of CZTS solar cells

AU - Cui, Xin

AU - Sun, Kaiwen

AU - Lee, Chang Yeh

AU - Yan, Chang

AU - Sun, Heng

AU - Zhang, Yuanfang

AU - Liu, Fangyang

AU - Green, Martin

AU - Hoex, Bram

AU - Hao, Xiaojing

PY - 2018/11/26

Y1 - 2018/11/26

N2 - Kesterite Cu-{2}ZnSnS-{4}(CZTS) solar cells have emerged as a promising candidate for scalable thin-film solar cells development, mainly due to its outstanding performance and compatibility with CuInGaSe2 and CdTe solar cells while only consisting of earth-abundant and non-toxic constituents. Here we present a method to address the relative low V-{OC}of CZTS solar cells by applying atomic layer deposited Zn{}-{1-x}Sn-{x}O(ZTO) as a Cd-free buffer layer. X-ray photoelectron spectroscopy measurement is implemented to study the band alignment at the CZTS /ZTOhetero-interface. It shows that the favorable conduction band alignment of CZTS /ZTOresulted in increasing V-{OC}by up to 10 %. By optimizing the treatment of CZTS absorber before ZTO deposition, we finally obtained an efficiency of 9.3 % which is the highest efficiency so far reported for Cd- free pure sulphide CZTS solar cells to the best of our knowledge.Index Terms- ALD, ZnSnO, heterojunction, CZTS.

AB - Kesterite Cu-{2}ZnSnS-{4}(CZTS) solar cells have emerged as a promising candidate for scalable thin-film solar cells development, mainly due to its outstanding performance and compatibility with CuInGaSe2 and CdTe solar cells while only consisting of earth-abundant and non-toxic constituents. Here we present a method to address the relative low V-{OC}of CZTS solar cells by applying atomic layer deposited Zn{}-{1-x}Sn-{x}O(ZTO) as a Cd-free buffer layer. X-ray photoelectron spectroscopy measurement is implemented to study the band alignment at the CZTS /ZTOhetero-interface. It shows that the favorable conduction band alignment of CZTS /ZTOresulted in increasing V-{OC}by up to 10 %. By optimizing the treatment of CZTS absorber before ZTO deposition, we finally obtained an efficiency of 9.3 % which is the highest efficiency so far reported for Cd- free pure sulphide CZTS solar cells to the best of our knowledge.Index Terms- ALD, ZnSnO, heterojunction, CZTS.

UR - https://www.scopus.com/pages/publications/85059893879

M3 - Conference Paper published in a book

AN - SCOPUS:85059893879

T3 - 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC

SP - 1511

EP - 1513

BT - 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018

Y2 - 10 June 2018 through 15 June 2018

ER -

Cui X, Sun K, Lee CY, Yan C, Sun H, Zhang Y et al. ALD ZnSnO buffer layer for enhancing heterojunction interface quality of CZTS solar cells. In 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC. Institute of Electrical and Electronics Engineers Inc. 2018. p. 1511-1513. 8547988. (2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC).

ALD ZnSnO buffer layer for enhancing heterojunction interface quality of CZTS solar cells

Abstract

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