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首页> 中文期刊> 《中国物理：英文版》 >Structural and optical properties of tungsten-doped vanadium dioxide films

Structural and optical properties of tungsten-doped vanadium dioxide films

         
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摘要

Thin films of tungsten (W)-doped thermochromic vanadium dioxide (VO2) were deposited onto soda-lime glass and fused silica by radio frequency magnetron sputtering.The doped VO2 films were characterized by X-ray diffraction,optical transmittance measurement,and near field optical microscopy with Raman spectroscopy.X-ray diffraction patterns show that the (011) peak of W-doped thermochromic VO2 film shifts to a lower diffraction angle with the increase of W concentration.The optical measurements indicated that the transmittance change (△T) at wavelength of 2500 nm drops from 65％ (△T at 35 ℃ and 80 ℃ for undoped VO2 film) to 38％ (△T at 30 ℃ and 42 ℃ for the doped VO2 film).At the same time,phase transition temperature drops from 65 ℃ to room temperature or lower with the increase of W concentration.Near field optical microscopy image shows that the surface of W-doped VO2 film is smooth.Raman results show that the main Raman modes of W-doped VO2 are centered at 614 cm-1,the same as that of undoped VO2,suggesting no Raman mode changes for lightly W-doped VO2 at room temperature,due to no phase transition appearing under this condition.

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  • 来源
    《中国物理：英文版》 |2013年第6期|491-493|共3页
  • 作者

    Wang Xue-Jin; Liu Yu-Ying; Li De-Hua; Feng Bao-Hua; He Zhi-Wei; Qi Zheng;

  • 作者单位

    College of Science, China Agricultural University, Beijing 100083, China;

    College of Science, China Agricultural University, Beijing 100083, China;

    Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;

    Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;

    College of Science, China Agricultural University, Beijing 100083, China;

    College of Science, China Agricultural University, Beijing 100083, China;

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  • 正文语种 eng
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