DocumentCode :
1870563
Title :
Correlation between composition and photovoltaic properties of Cu2ZnSnS4 thin film solar cells
Author :
Unold, Thomas ; Kretzschmar, Steffen ; Just, Justus ; Zander, Ole ; Schubert, Björn ; Marsen, Björn ; Schock, Hans-Werner
Author_Institution :
Helmholtz-Zentrum Berlin, Berlin, Germany
fYear :
2011
fDate :
19-24 June 2011
Abstract :
The influence of composition on the quaternary Cu2ZnSnS4 (CZTS) absorber material on the secondary phase content, recombination characteristics and solar cell performance is investigated. Best solar efficiencies are found in a very narrow Cu-poor, Zn-rich composition range. Photoluminescence measurements performed at 12 K indicate strong compensation for Cu-poor composition, similar to what is observed in chalcopyrite-type compounds. We find that strongly copper-deficient CZTS contains significant amounts of ZnS, which degrades the solar cell performance.
Keywords :
copper compounds; photoluminescence; semiconductor materials; semiconductor thin films; solar absorber-convertors; solar cells; thin film devices; tin compounds; zinc compounds; Cu-poor Zn-rich composition range; Cu2ZnSnS4; chalcopyrite-type compounds; copper-deficient CZTS; photoluminescence measurements; photovoltaic properties; quaternary absorber material; recombination characteristics; secondary phase content; solar cell performance; solar efficiencies; temperature 12 K; thin film solar cells; Copper; Materials; Photonic band gap; Photovoltaic cells; Temperature measurement; Tin; Zinc;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Photovoltaic Specialists Conference (PVSC), 2011 37th IEEE
Conference_Location :
Seattle, WA
ISSN :
0160-8371
Print_ISBN :
978-1-4244-9966-3
Type :
conf
DOI :
10.1109/PVSC.2011.6186531
Filename :
6186531
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=1870563
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