Fabrication of \(\hbox {Cu}_{2}\hbox {ZnSn(S,Se)}_{4}\) thin film solar cell devices based on printable nano-ink

  • Xinfeng Zheng
  • Yufeng LiuEmail author
  • Na Zhang
  • Jingshan Hou
  • Guoying Zhao
  • Yongzheng Fang


\(\hbox {Cu}_{{2}}\hbox {ZnSnS}_{{4}}\) (CZTS) as a promising light-absorber material has been extensively applied in photovoltaic solar cells due to its huge absorption coefficient (\({\sim }10^{4}\, \hbox {cm}^{-1})\) and optimal bandgap (\({\sim }\hbox {1.5 eV}\)). In this study, stable and printable CZTS nano-ink was acquired by dispersing CZTS nanocrystals (NCs) in organic solutions. The kesterite CZTS NCs possess uniform size and good crystallinity. The Raman peak of CZTS is located at \(330\, \hbox {cm}^{-1}\), which illustrates that the NCs consist of single-phase CZTS without any impurities. The as-prepared CZTS nano-ink was in turn spin-coated onto the Mo substrate to obtain the desired CZTS thin films under the conditions of anti-vacuum. The compact and dense CZTSSe absorbers were acquired by sulphuring and selenizing the as-prepared thin films. The band gap of the photovoltaic absorber materials is 1.2 eV after incorporating Se into the photovoltaic thin films. Finally, the CZTSSe photovoltaic thin film device, whose power conversion efficiency was \(1.40\pm 0.14\%\), was prepared by this easy and green method.


\(\hbox {Cu}_{{2}}\hbox {ZnSnS}_{{4}}\) nanocrystal ink photovoltaic absorber thin films solar cell 



This work was financially supported by the National Natural Science Foundation of China (NSFC) (grant numbers 51402335, 51472162, 11574335 and 61605115) and the Open Foundation of National Laboratory for Infrared Physics (grant number M201514) and Shanghai Sailing Project (no. 15YF1411800).


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Copyright information

© Indian Academy of Sciences 2019

Authors and Affiliations

  1. 1.School of Materials Science and Engineering, Shanghai Institute of TechnologyShanghaiPeople’s Republic of China

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