Chemical composition dependence of Cu2ZnSnS4 absorbers fabricated by sulfurization of thermal evaporated metal precursors and solar cell performance

Liyuan Zhang; Sreejith Karthikeyan; Mandip J. Sibakoti; Stephen A. Campbell

doi:10.1557/opl.2015.245

Chemical composition dependence of Cu₂ZnSnS₄ absorbers fabricated by sulfurization of thermal evaporated metal precursors and solar cell performance

Liyuan Zhang, Sreejith Karthikeyan, Mandip J. Sibakoti, Stephen A. Campbell

Electrical and Computer Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Scopus citations

Abstract

We investigate the synthesis of kesterite Cu₂ZnSnS₄ (CZTS) thin films using thermal evaporation from copper, zinc and tin pellets and post-annealing in a sulfur atmosphere. The effects of chemical composition were studied both on the absorber layer properties and on the final solar cell performance. It is confirmed that CZTS thin film chemical composition affects the carrier concentration profile, which then influences the solar cell properties. Solar cells using a CZTS thin film with composition ratio Cu/(Zn+Sn) = 0.87, and Zn/Sn = 1.24 exhibited an open-circuit voltage of 483 mV, a short-circuit current of 14.54 mA/cm², a fill factor of 37.66 % and a conversion efficiency of 2.64 %. Only a small deviation from the optimal chemical composition can drop device performance to a lower level, which confirms that the CZTS solar cells with high conversion efficiency existed in a relatively narrow composition region.

Original language	English (US)
Title of host publication	Sustainable Solar-Energy Conversion Using Earth-Abundant Materials
Editors	Y. Li, S. Mathur, G. Zheng
Publisher	Materials Research Society
Pages	19-24
Number of pages	6
Edition	January
ISBN (Electronic)	9781510806184
DOIs	https://doi.org/10.1557/opl.2015.245
State	Published - 2015
Event	2014 MRS Fall Meeting - Boston, United States Duration: Nov 30 2014 → Dec 5 2014

Publication series

Name	Materials Research Society Symposium Proceedings
Number	January
Volume	1738
ISSN (Print)	0272-9172

Other

Other	2014 MRS Fall Meeting
Country/Territory	United States
City	Boston
Period	11/30/14 → 12/5/14

Bibliographical note

Publisher Copyright:
© 2015 Materials Research Society.

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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Zhang, L., Karthikeyan, S., Sibakoti, M. J., & Campbell, S. A. (2015). Chemical composition dependence of Cu₂ZnSnS₄ absorbers fabricated by sulfurization of thermal evaporated metal precursors and solar cell performance. In Y. Li, S. Mathur, & G. Zheng (Eds.), Sustainable Solar-Energy Conversion Using Earth-Abundant Materials (January ed., pp. 19-24). (Materials Research Society Symposium Proceedings; Vol. 1738, No. January). Materials Research Society. https://doi.org/10.1557/opl.2015.245

Chemical composition dependence of Cu₂ZnSnS₄ absorbers fabricated by sulfurization of thermal evaporated metal precursors and solar cell performance. / Zhang, Liyuan; Karthikeyan, Sreejith; Sibakoti, Mandip J. et al.
Sustainable Solar-Energy Conversion Using Earth-Abundant Materials. ed. / Y. Li; S. Mathur; G. Zheng. January. ed. Materials Research Society, 2015. p. 19-24 (Materials Research Society Symposium Proceedings; Vol. 1738, No. January).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Zhang, L, Karthikeyan, S, Sibakoti, MJ & Campbell, SA 2015, Chemical composition dependence of Cu₂ZnSnS₄ absorbers fabricated by sulfurization of thermal evaporated metal precursors and solar cell performance. in Y Li, S Mathur & G Zheng (eds), Sustainable Solar-Energy Conversion Using Earth-Abundant Materials. January edn, Materials Research Society Symposium Proceedings, no. January, vol. 1738, Materials Research Society, pp. 19-24, 2014 MRS Fall Meeting, Boston, United States, 11/30/14. https://doi.org/10.1557/opl.2015.245

Zhang L, Karthikeyan S, Sibakoti MJ, Campbell SA. Chemical composition dependence of Cu₂ZnSnS₄ absorbers fabricated by sulfurization of thermal evaporated metal precursors and solar cell performance. In Li Y, Mathur S, Zheng G, editors, Sustainable Solar-Energy Conversion Using Earth-Abundant Materials. January ed. Materials Research Society. 2015. p. 19-24. (Materials Research Society Symposium Proceedings; January). doi: 10.1557/opl.2015.245

Zhang, Liyuan ; Karthikeyan, Sreejith ; Sibakoti, Mandip J. et al. / Chemical composition dependence of Cu₂ZnSnS₄ absorbers fabricated by sulfurization of thermal evaporated metal precursors and solar cell performance. Sustainable Solar-Energy Conversion Using Earth-Abundant Materials. editor / Y. Li ; S. Mathur ; G. Zheng. January. ed. Materials Research Society, 2015. pp. 19-24 (Materials Research Society Symposium Proceedings; January).

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abstract = "We investigate the synthesis of kesterite Cu2ZnSnS4 (CZTS) thin films using thermal evaporation from copper, zinc and tin pellets and post-annealing in a sulfur atmosphere. The effects of chemical composition were studied both on the absorber layer properties and on the final solar cell performance. It is confirmed that CZTS thin film chemical composition affects the carrier concentration profile, which then influences the solar cell properties. Solar cells using a CZTS thin film with composition ratio Cu/(Zn+Sn) = 0.87, and Zn/Sn = 1.24 exhibited an open-circuit voltage of 483 mV, a short-circuit current of 14.54 mA/cm2, a fill factor of 37.66 % and a conversion efficiency of 2.64 %. Only a small deviation from the optimal chemical composition can drop device performance to a lower level, which confirms that the CZTS solar cells with high conversion efficiency existed in a relatively narrow composition region.",

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