期刊
PHYSICA STATUS SOLIDI A-APPLIED RESEARCH
卷 198, 期 2, 页码 443-446出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssa.200306639
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In-situ CdCl2 treatment for spray deposited CdTe films has been done by spraying a 0.01 M CdCl2 solution on US substrates. Scanning electron micrographs show the improvement in grain growth with the CdCl2 spray. Photoluminescence spectra for films with the in-situ treatment show a shift in the bandgap by 0.06 eV and a reduction in the defect band intensity as compared to those for the films without the treatment. The shift is due to conversion of CdTe into CdTeS by S diffusion from the CdS substrate. Our studies show that an in-situ CdCl2 treatment is effective in improving the CdTe thin film properties.
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