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

被引：0

作者：

Cui, Xin ^{[1
]}

Sun, Kaiwen ^{[1
]}

Lee, Chang-Yeh ^{[1
]}

Yan, Chang ^{[1
]}

Sun, Heng ^{[1
]}

Zhang, Yuanfang ^{[1
]}

Liu, Fangyang ^{[1
]}

Green, Martin ^{[1
]}

Hoex, Bram ^{[1
]}

Hao, Xiaojing ^{[1
]}

机构：

[1] UNSW Sydney, Sch Photovolta & Renewable Energy Engn, Sydney, NSW 2052, Australia

来源：

2018 IEEE 7TH WORLD CONFERENCE ON PHOTOVOLTAIC ENERGY CONVERSION (WCPEC) (A JOINT CONFERENCE OF 45TH IEEE PVSC, 28TH PVSEC & 34TH EU PVSEC) | 2018年

关键词：

ALD; ZnSnO; heterojunction; CZTS;

D O I：

暂无

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Kesterite Cu2ZnSnS4 (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 Zn1-xSnxO (ZTO) as a Cd-free buffer layer. X-ray photoelectron spectroscopy measurement is implemented to study the band alignment at the CZTS/ZTO hetero-interface. It shows that the favorable conduction band alignment of CZTS/ZTO resulted 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.

引用

页码：1511 / 1513

页数：3

共 7 条

[1]

Bär M, 2011, APPL PHYS LETT, V99, DOI [10.1063/1.3637574, 10.1063/1.3663327]

[2] Effects of heavy alkali elementsin Cu(In,Ga)Se2 solar cells with efficiencies up to 22.6% [J].

Jackson, Philip ;

Wuerz, Roland ;

Hariskos, Dimitrios ;

Lotter, Erwin ;

Witte, Wolfram ;

Powalla, Michael .

PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS, 2016, 10 (08) :583-586

[3] Characterization of chemical bath deposited CdS thin films at different deposition temperature [J].

Liu, Fangyang ;

Lai, Yanqing ;

Liu, Jun ;

Wang, Bo ;

Kuang, Sanshuang ;

Zhang, Zhian ;

Li, Jie ;

Liu, Yexiang .

JOURNAL OF ALLOYS AND COMPOUNDS, 2010, 493 (1-2) :305-308

[4] Valence band offset at the CdS/Cu2ZnSnS4 interface probed by x-ray photoelectron spectroscopy [J].

Santoni, A. ;

Biccari, F. ;

Malerba, C. ;

Valentini, M. ;

Chierchia, R. ;

Mittiga, A. .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2013, 46 (17)

[5] Over 9% Efficient Kesterite Cu2ZnSnS4 Solar Cell Fabricated by Using Zn1-xCdxS Buffer Layer [J].

Sun, Kaiwen ;

Yan, Chang ;

Liu, Fangyang ;

Huang, Jialiang ;

Zhou, Fangzhou ;

Stride, John A. ;

Green, Martin ;

Hao, Xiaojing .

ADVANCED ENERGY MATERIALS, 2016, 6 (12)

[6] Device Characteristics of CZTSSe Thin-Film Solar Cells with 12.6% Efficiency [J].

Wang, Wei ;

Winkler, Mark T. ;

Gunawan, Oki ;

Gokmen, Tayfun ;

Todorov, Teodor K. ;

Zhu, Yu ;

Mitzi, David B. .

ADVANCED ENERGY MATERIALS, 2014, 4 (07)

[7] Boosting the efficiency of pure sulfide CZTS solar cells using the In/Cd-based hybrid buffers [J].

Yan, Chang ;

Liu, Fangyang ;

Sun, Kaiwen ;

Song, Ning ;

Stride, John A. ;

Zhou, Fangzhou ;

Hao, Xiaojing ;

Green, Martin .

SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2016, 144 :700-706

← 1 →