Fabrication of Cu2ZnSnS4 solar cells with 5.1% efficiency via thermal decomposition and reaction using a non-toxic sol-gel route

被引：250

作者：

Su, Zhenghua ^{[1
]}

Sun, Kaiwen ^{[1
]}

Han, Zili ^{[1
]}

Cui, Hongtao ^{[2
]}

Liu, Fangyang ^{[1
,2
]}

Lai, Yanqing ^{[1
]}

Li, Jie ^{[1
]}

Hao, Xiaojing ^{[2
]}

Liu, Yexiang ^{[1
]}

Green, Martin A. ^{[2
]}

机构：

[1] Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China

[2] Univ New S Wales, Sch Photovolta & Renewable Energy Engn, Sydney, NSW, Australia

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2014年 / 2卷 / 02期

基金：

国家高技术研究发展计划(863计划); 中国国家自然科学基金;

关键词：

THIN-FILMS; MATERIALS AVAILABILITY; RAMAN-SCATTERING; THIOUREA; PRECURSORS; CRYSTAL; LAYER;

D O I：

10.1039/c3ta13533k

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Earth-abundant Cu2ZnSnS4 (CZTS) has been confirmed as a promising semiconductor material for thin film solar cells. To meet the requirements of high-efficiency and low-cost for photovoltaic technologies, a modified thermal decomposition sol-gel method with low-cost and low-toxicity for CZTS thin film preparation is presented, and the detailed formation mechanism of the thin film is investigated to obtain an optimized process. By introducing non-aqueous thiourea-metal-oxygen sol-gel processing, as well as applying extrinsic dopants and chemical etching, high-quality and phase-controlled CZTS thin films with homogeneous elemental distribution and a low impurity content have been synthesized. Based on the modified sol-gel method, solar cells with a structure of Ni:Al/ZAO/i-ZnO/CdS/CZTS/Mo/glass have been fabricated, and a power conversion efficiency of 5.10% is obtained, indicating its potential for high-throughput and high power conversion efficiency photovoltaic devices.

引用

页码：500 / 509

页数：10

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