| CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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Cu2SixSn1−xS3 Thin Films Prepared by Reactive Magnetron Sputtering For Low-Cost Thin Film Solar Cells |
| YAN Chang, LIU Fang-Yang, LAI Yan-Qing**, LI Jie, LIU Ye-Xiang
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Departments of Metallurgical Science and Engineering, Central South University, Changsha 410083
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| Cite this article: |
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YAN Chang, LIU Fang-Yang, LAI Yan-Qing et al 2011 Chin. Phys. Lett. 28 108801 |
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Abstract We report the preparation of Cu2SixSn1−xS3 thin films for thin film solar cell absorbers using the reactive magnetron co−sputtering technique. Energy dispersive spectrometer and x-ray diffraction analyses indicate that Cu2Si1−xSnxS3 thin films can be synthesized successfully by partly substituting Si atoms for Sn atoms in the Cu2SnS3 lattice, leading to a shrinkage of the lattice, and, accordingly, by 2θ shifting to larger values. The blue shift of the Raman peak further confirms the formation of Cu2SixSn1−xS3. Environmental scanning electron microscope analyses reveal a polycrystalline and homogeneous morphology with a grain size of about 200–300 nm. Optical measurements indicate an optical absorption coefficient of higher than 104 cm−1 and an optical bandgap of 1.17±0.01 eV.
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| Keywords:
88.40.Jn
88.40.H
81.15.Cd
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Received: 18 March 2011
Published: 28 September 2011
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