Fabrication of Cu2ZnSnS4 films by sulfurization of Cu/ZnSn/Cu precursor layers in sulfur atmosphere for solar cells

被引：154

作者：

Chalapathy, R. B. V. ^{[1
]}

Jung, Gwang Sun ^{[1
]}

Ahn, Byung Tae ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2011年 / 95卷 / 12期

基金：

新加坡国家研究基金会;

关键词：

CZTS; Cu2ZnSnS4; Kesterite; Sulfurization; Solar cells; THIN-FILMS; OPTICAL-PROPERTIES; CUINS2; DIFFUSION;

D O I：

10.1016/j.solmat.2011.07.017

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Cu2ZnSnS4 (CZTS) absorbers were grown by sulfurization of Cu/ZnSn/Cu precursors in sulfur atmosphere. The reaction mechanism of CZTS formation from the precursor was analyzed using XRD and Raman spectroscopy. The films with a single phase CZTS were formed at 560 and 580 degrees C by sulfurization for 30 min. The film grown at 560 degrees C showed bi-layer morphology with grooved large grains on the top and dense small grains near the bottom of the film. On the other hand, the film grown at 580 degrees C showed large grains with grooves that are extended from surface top to bottom of the film. The solar cell fabricated with the CZTS film grown at 560 degrees C showed the best conversion efficiency of 4.59% for 0.44 cm(2) with V-oc = 0.545 V, J(sc) = 15.44 mA/cm(2), and FF=54.6. We found that further improvement of the microstructure of CZTS films can increase the efficiency of CZTS solar cells. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：3216 / 3221

页数：6

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