Morphology and crystal phase evolution of doctor-blade coated CuInSe2 thin films

被引:21
作者
Lee, Dongwook [1 ]
Choi, Youngwoo [1 ]
Yong, Kijung [1 ]
机构
[1] Pohang Univ Sci & Technol, Dept Chem Engn, Surface Chem Lab Elect Mat, Pohang 790784, South Korea
关键词
Characterization; Nanostructure; Nanomaterials; SOLAR-CELLS;
D O I
10.1016/j.jcrysgro.2010.09.055
中图分类号
O7 [晶体学];
学科分类号
0702 ; 070205 ; 0703 ; 080501 ;
摘要
CuInSe2 (CIS) chalcopyrite thin films were prepared using a low-cost non-vacuum doctor-blade coating and the thermal annealing method An acetone-based precursor solution containing copper chloride indium chloride selenium chloride and an organic binder was deposited onto a Mo-sputtered soda lime glass substrate using a doctor-blade coating method After coating the precursor films were annealed in a quartz tube furnace under low vacuum without the use of a Se atmosphere or reduction conditions Evolution of the morphology crystal structure and thermal decomposition behavior of the films was analyzed by X-ray diffraction scanning electron microscopy and thermogravimetric analysis and the film formation mechanism was suggested The as-deposited precursor film gradually decomposed with increase in temperature and formed Cu2-xSe and In2Se3 nuclei on the surface of the film Incorporation of Cu2-xSe with In2Se3 yielded a chalcopyrite CIS phase which crystallized on annealing above 400 degrees C The obtained CIS film showed low-resistive ohmic behavior with a Mo electrode and a high absorption efficiency for visible-infrared (IR) light making It suitable for use in photovoltaic applications (C) 2010 Elsevier BV All rights reserved
引用
收藏
页码:3665 / 3669
页数:5
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