Journal
APPLIED SURFACE SCIENCE
Volume 255, Issue 17, Pages 7749-7752Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2009.04.163
Keywords
Nanostructures; Crystal growth; Bi2S3; Thin films; Electrodeposition
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Funding
- Programme for New Century Excellent Talent in the University of China [NECT-06-0893]
- Natural Science Foundation of Shaanxi Province [SJ08-ZT05]
- Innovation Found of Shaanxi University of Science and Technology
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Nanoleaf-like Bi2S3 thin films were deposited on indium tin oxide (ITO) glass using Bi(NO3)(3) and Na2S2O3 as precursors by a cathodic electrodeposition process. The as-deposited thin films were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM) and photoluminescence spectrum (PL). The influence of precursor solution mole concentration ratios [Bi(NO3)(3)]/[Na2S2O3] on the phase compositions, morphologies and photoluminescence properties of the obtained thin films were investigated. Results show that a uniform Bi2S3 thin film with nanoleaf structure can be obtained with the precursor solution concentration ratio [Bi(NO3)(3)]/[Na2S2O3] = 1:7. The as-prepared thin films exhibit blue-green photoluminescence properties under ultraviolet light excitation. With the increase of concentration ratios [Bi(NO3)(3)]/[Na2S2O3] in the deposition solution, the crystallizations and PL properties of Bi2S3 thin films are obviously improved. (C) 2009 Elsevier B. V. All rights reserved.
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