期刊
CERAMICS INTERNATIONAL
卷 42, 期 2, 页码 2466-2471出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2015.10.047
关键词
Chemical bath deposition; CdxZn1-xS thin films; Structure; Photo-current response
资金
- National Nature Science Foundation of China [61176062]
- Science and Technology Supporting Project of Jiangsu Province [BE2012103]
- Jiangsu Province Cultivation base for State Key Laboratory of Photovoltaic Science and Technology - Priority Academic Program Development of Jiangsu Higher Education Institutions [SKLPSTKF201506]
The CdxZn1-xS thin films were prepared by chemical bath deposition in a solution containing cadmium chloride, zinc chloride, thiourea, sodium citrate and ammonia. It was found CdxZn1-xS thin films could be successfully prepared at different CdCl2 concentrations from 0.04 M to 0.01 M. The morphological, structural, optical properties of CdxZn1-xS films fabricated by different Cd source concentrations were investigated by XRD, SEM and UV-vis-NIR spectroscopy, respectively. The CdxZn1-xS films prepared at 0.03 M and 0.02 M CdCl2 showed uniform, dense surface morphology and good crystallinity. With the concentration of CdCl2 in solution decreasing from 0.04 M to 0.01 M, the zinc content increased. Accordingly, the optical band gap increased from 2.45 eV to 3.07 eV. The photo-current response properties were mainly discussed. All the films showed obvious photoconductive phenomenon. The CdxZn1-xS film prepared at 0.02 M CdCl2 showed a best photo-current response, which presented fastest raise-up and fall-down photo-current when the light was turned on and off. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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