Blue-emitting ZnO sol and film obtained by sol-gel process |
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Authors: | Junying Zhang Haibing Feng Weichang Hao Tianmin Wang |
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Institution: | (1) School of Science, Beihang University, Beijing, 100083, P.R. China |
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Abstract: | In this paper, bright blue-emitting ZnO sol and film were prepared by sol-gel process and the luminescent properties were
investigated. The absorption spectrum of the sol consists of a wide band with two steps in the long wavelength region. The
sol and film show a single wide blue-emission band under excitation of UV light, while the excitation spectra are composed
by multiple bands. The quantum yield of the ZnO sol is 0.52 when the excitation wavelength is 348 nm. The particle size of
the film is smaller than 10 nm, which results in the fine structure of the absorption and excitation spectra. |
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Keywords: | Sol-gel process Films Luminescence ZnO |
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