Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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A Noninjection Reaction Route to CuInSe2 Nanocrystals with Triethanolamine as the Complexing Agent

  • Liu, Wen-Long (School of Chemical Engineering, Sichuan University) ;
  • Wu, Meng-Qiang (State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China) ;
  • Zhou, Ru-Chao (School of Chemical Engineering, Sichuan University) ;
  • Yan, Li-Dan (School of Chemical Engineering, Sichuan University) ;
  • Zhang, Shu-Ren (State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China) ;
  • Zhang, Qi-Yi (School of Chemical Engineering, Sichuan University)
  • Received : 2011.04.14
  • Accepted : 2011.10.15
  • Published : 2011.12.20
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Abstract

The chalcopyrite-type $CuInSe_2$ is a remarkable material for thin film solar cells owing to its electronic structure and optical response. Single-phase sphere-like $CuInSe_2$ nanocrystallite particles were prepared by a facile noninjection method with triethanolamine as the complexing agent and the solvent simultaneously. The period of the reaction was the key to form single-phase $CuInSe_2$ nanocrystals at $240^{\circ}C$. TEM, XRD, XPS, EDX investigations were performed to characterize the morphology and the detailed structure of as-synthesized $CuInSe_2$ nanocrystals. All of the analysis results proved that the synthesized nanocrystals were pure phase and close to the stoichiometric ratio rather than a simple mixture. The band gap of the obtained $CuInSe_2$ nanocrystals was $1.03{\pm}0.03$ eV.

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