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Coatings 2019, 9(2), 130; https://doi.org/10.3390/coatings9020130

Fabrication of Cu2ZnSnS4 Thin Films Based on Facile Nanocrystals-Printing Approach with Rapid Thermal Annealing (RTA) Process

1
College of Sciences, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, China
2
School of Science, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
3
Department of Applied Physics, Graduate School of Engineering, Osaka University, Yamadaoka, Suita-city, Osaka 565-0871, Japan
*
Authors to whom correspondence should be addressed.
Received: 15 December 2018 / Revised: 1 February 2019 / Accepted: 13 February 2019 / Published: 19 February 2019
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Abstract

In the current study, Cu2ZnSnS4 (CZTS) thin film was successfully fabricated by the facile nanocrystals (NCs)-printing approach combined with rapid thermal annealing (RTA) process. Firstly, the CZTS NCs were synthesized by a thermal solution method and the possible formation mechanism was analyzed briefly. Then the influences of RTA toleration temperature and duration time on the various properties of as-printed thin films were examined via XRD, Raman, FE-SEM, UV-vis-IR spectroscopy, EDS and XPS treatments in detail. As observed, the RTA factors of temperature and time had significant impacts on the structure and morphology of as-prepared thin films, while there were no obvious effects on the band gap energy in studied conditions. The results showed that the obtained thin film at optimal RTA conditions of (600 °C, 20 min) featured a kesterite structure in pure phase and an irregular morphology consisting of large grains. Moreover, the satisfactory composition of a Cu-poor, Zn-rich state and an ideal band gap energy of 1.4 eV suggests that as-fabricated CZTS thin film is a suitable light-absorbing layer candidate for the application in thin film solar cells. View Full-Text
Keywords: CZTS thin films; nanocrystals-printing approach; rapid thermal annealing; solar cells CZTS thin films; nanocrystals-printing approach; rapid thermal annealing; solar cells
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Chen, J.; Wang, F.; Yang, B.; Peng, X.; Chen, Q.; Zou, J.; Dou, X. Fabrication of Cu2ZnSnS4 Thin Films Based on Facile Nanocrystals-Printing Approach with Rapid Thermal Annealing (RTA) Process. Coatings 2019, 9, 130.

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