Optical phonons assisted infrared absorption in VO2 based bolometer
Optical phonons assisted infrared absorption in VO2 based bolometer
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DOI：
10.1063/1.2753746
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发表时间：
2007-07-02
影响因子：
4
通讯作者：
Zhou, Zhiping
中科院分区：
文献类型：
--
作者：
Chen, Changhong;Zhou, Zhiping
VO 2基测辐射热计的光学声子辅助红外吸收被证明是自由的，低，或过阻尼振荡在不同的光谱范围内取决于钝化厚度。特别地，由于在对应于来自强声子振动的吸收带的光谱范围中的过阻尼振荡，它将变得饱和。该器件在9.1 μ m波长处达到99.9%的峰值吸收，并在长波（8-14 μ m）红外区显示出宽带吸收，与金属-绝缘体转变和辐射入射角高达30度无关。(c)2007年，美国物理学会。
Optical phonons assisted infrared absorption in VO2 based bolometer is demonstrated to be free, low, or over damping oscillation over different spectral ranges depending on the passivation thickness. In particular, it will become saturated due to the over damping oscillation in the spectral range corresponding to the absorption bands from strong phonon vibrations. The device reaches a peak absorbance of 99.9% at wavelength of 9.1 mu m and shows a broadband absorption, independent of metal-insulator transition and radiation incident angle up to 30 degrees in the long wavelength (8-14 mu m) infrared region. (c) 2007 American Institute of Physics.