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Reaction kinetics of Cu2-xS, ZnS, and SnS2 to form Cu2ZnSnS4 and Cu2SnS3 studied using differential scanning calorimetry

Published online by Cambridge University Press:  30 May 2017

Elizabeth A. Pogue ,
Melissa Goetter  and
Angus Rockett
Elizabeth A. Pogue*
Affiliation:
University of Illinois Urbana-Champaign, Department of Materials Science and Engineering, Champaign, IL 61801, U.S.A.
Melissa Goetter
Affiliation:
University of Illinois Urbana-Champaign, Department of Materials Science and Engineering, Champaign, IL 61801, U.S.A.
Angus Rockett
Affiliation:
University of Illinois Urbana-Champaign, Department of Materials Science and Engineering, Champaign, IL 61801, U.S.A. Colorado School of Mines, Department of Metallurgical and Materials Engineering, Golden, CO 80401, U.S.A.
*
*(Email: [email protected])

Abstract

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Differential scanning calorimetry experiments on mixed Cu2-xS, ZnS, and SnS2 precursors were conducted to better understand how Cu2ZnSnS4 (CZTS) and Cu2SnS3 form. The onset temperatures of Cu2SnS3 reactions and CZTS suggest that the ZnS phase may mediate Cu2SnS3 formation at lower temperatures before a final CZTS phase forms. We also found no evidence of a stable Cu2ZnSn3S8 phase. The major diffraction peaks associated with Cu2ZnSnS4, and Cu2SnS3 (overlaps with ZnS, as well) began to grow around 380 °C, although the final reaction to form Cu2ZnSnS4 probably did not occur until higher temperatures were reached. An exothermic reaction was observed corresponding to formation of this phase. There was some variability in the onset temperature for reactions to form Cu2SnS3. At least 5 steps are involved in this reaction and several segments of the reaction had relatively reproducible energies.

Keywords

photovoltaickineticscalorimetry
Type
Articles
Information
MRS Advances , Volume 2 , Issue 53: Energy Storage and Conversion , 2017 , pp. 3181 - 3186
Copyright
Copyright © Materials Research Society 2017 

References

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