화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.36, No.12, 2110-2117, December, 2019
DOI10.1007/s11814-019-0386-8  Export Citation
Green and low-cost preparation of CIGSe thin film by a nanocrystals ink based spin-coating method
Trang Thi Thuy Le, Nam Le, Mohan Reddy Pallavolu, Yoonchang Jeon, Dong-seob Jeong, Babu Pejjai, Vasudeva Reddy Minnam Reddy, Nguyen Tam Nguyen Truong, and Chinho Park†
  • School of Chemical Engineering, Yeungnam University, 280 Dae-dong, Gyeongsan 38541, Korea
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An “ink” solution based process, using spin-coating technique, followed by annealing in selenium environment with different temperature programs was utilized to prepare CIGSe thin films. Herein, the CuIn0.7Ga0.3Se2 nanocrystals were synthesized using ethanol - a “green” solvent. Three different solvents: 2-propanol, 2-methoxyethanol, and their 2 : 1 mixture (v/v ratio), were investigated as a dispersion medium for the as-synthesized CIGSe nanocrystals to form a stable ink solution. The last one- a mixture of 2-propanol : 2-methoxyethanol=2 : 1 (v/v), was found to be the most suitable. Furthermore, the influences of various annealing modes on the CIGSe grain size and density in the resulting film were also studied. The as-prepared CIGSe thin film was around 1μm thick and possessed a tetragonal structure. A newly developed cheaper and “greener” non-vacuum process was applied successfully from the synthesis of nanocrystals to the formation of ink solution, and produced high quality thin films; this opens a new route to the cost-competitive commercialization of CIGSe thin film solar cells.
Keywords:CIGSe Compound;Solution Based Process;Spin-coating Method;CIGSe Thin Film Solar Cell
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