Cu2ZnSn(S,Se)4 solar cell absorbers processed from Na-containing solutions in DMSO

被引：29

作者：

Werner, M. ^{[1
]}

Sutter-Fella, C. M. ^{[1
]}

Hagendorfer, H. ^{[1
]}

Romanyuk, Y. E. ^{[1
]}

Tiwari, A. N. ^{[1
]}

机构：

[1] Empa Swiss Fed Labs Mat Sci & Technol, Lab Thin Films & Photovolta, CH-8600 Dubendorf, Switzerland

来源：

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2015年 / 212卷 / 01期

关键词：

doping; kesterites; sodium; solar cells; solution processing; thin films; CU(IN; GA)SE-2; THIN-FILMS; GRAIN-BOUNDARIES; CU2ZNSNSE4; FILMS; PRECURSORS; SODIUM; LAYERS;

D O I：

10.1002/pssa.201431146

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cu2ZnSn(S,Se)(4) absorbers were processed from metal salt solutions in dimethyl sulfoxide (DMSO) and annealed in reactive Se atmosphere. A simple way to introduce sodium doping by adding NaCl to the initial precursor solution is presented. The additional sodium has no significant effect on the absorber morphology, but it improves the device performance from 5.01% to 6.09%. The sodium doping clearly reduces the recombination rate as manifested in a higher J(sc). and enhanced carrier collection. It is also shown that the absorber layer thickness should be optimized to similar to 1.5 mu m. By reducing the absorber thickness we found a facile way to extend the well crystallized top crust over the whole absorber and thus improve the solar cell performance. (C) 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：116 / 120

页数：5

共 22 条

[1]

[Anonymous], 12 EUR PHOT SOL EN C

[2] Current routes in polycrystalline CuInSe2 and Cu(In,Ga)Se2 films [J].