| Optical absorption properties of Ge-Sb-Te films |
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| 作者姓名： | 方铭 李青会 干福熹 |
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| 作者单位： | Shanghai Institute of Optics and Fine Mechanics，Chinese Academy of Sciences，Shanghai 201800，Shanghai Institute of Optics and Fine Mechanics，Chinese Academy of Sciences，Shanghai 201800，Shanghai Institute of Optics and Fine Mechanics，Chinese Academy of Sciences，Shanghai 201800 |
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| 摘 要： | The optical properties of monolayer Ge2Sb2Te5 thin films with three different thicknesses prepared by dc magnetron sputtering method at the range of 400-800 nm were studied. The optical absorption coefficients and the optical energy gap (Eg) were calculated, The results gave values for the absorption coefficients in the range of (1.3-7.5)×105 cm-1 which were in the high absorption wavelength region of
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