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Optical Absorption of Sol-Gel Derived ZnO/TiO2 Nanocomposite Films
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| YUAN Zhi-Hao1,2;TANG Cheng-Chun2;FAN Shou-Shan2 |
| 1Department of Chemistry, Tsinghua University, Beijing 100084
2Department of Physics, Tsinghua University, Beijing 100084
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| Cite this article: |
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YUAN Zhi-Hao, TANG Cheng-Chun, FAN Shou-Shan 2001 Chin. Phys. Lett. 18 1520-1522 |
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Abstract ZnO/TiO2 nanocomposite films on quartz substrates were prepared by the sol-gel method, and the corresponding optical absorption properties were investigated. In the ultraviolet region, it was found that the position of fundamental absorption edge partially depends on the composition of the ZnO/TiO2 films, and shifts toward a shorter wavelength with the increasing content of ZnO in the films. Moreover, a blueshift of the absorption edge resulted from a quantum size effect and the quantum confinement effect was observed in the ZnO/TiO2 system.
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| Keywords:
78.20.Ci
78.66.Jg
81.20.Fw
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Published: 01 November 2001
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| PACS: |
78.20.Ci
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(Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))
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78.66.Jg
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(Amorphous semiconductors; glasses)
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81.20.Fw
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(Sol-gel processing, precipitation)
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