| Ga＿（1－x）In＿xAs＿（1－y）Sb＿y四元合金系光学性质的研究 |
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| 作者单位： | Department of Physics，Peking University |
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| 摘 要： | 对以ＧａＳｂ为衬底、外延生长的四元化合物Ｇａ＿（１－ｘ）Ｉｎ＿ｘＡｓ＿（１－ｙ）Ｓｂ＿ｙ（组分在ｘ＝０．０３２，ｙ＝０．９４到ｘ＝０．２６，ｙ＝０．９范围内）进行了远红外反射谱、喇曼散射、光吸收和光致发光的测量。结果给出外延层晶格振动的性质及不同温度下（８３Ｋ—３００Ｋ）四元合金的能隙，并详细讨论了能隙随温度的变化。
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| 关 键 词： | 远红外反射谱 喇曼散射 光吸收 光致发光 |
Studies of the Optical Properties in Ga_(1-x)In_xAs_(1-y)Sb_y Quaternary Alloy System |
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| Authors: | CHEN Chenjia YANG Chengqing SHI Shouxu ZHOU Hetian GAO Wei LI Hui |
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| Abstract: | The optical properties have been studied in LPE Ga_(1-x)In_xAs_(1-y)Sb_y quaternary alloysystem on GaSb substrate. The results of the far-infrared reflection spectra, Ramanscattering,optical absorption and photoluminescence are given. The compositions studiedare limited to the region x=0.032,y=0.94 to x=0.26,y =0.9. The lattice vibrationalproperties of the system are analyzed and obtained by far infrared spectra and confirmedby Raman scattering. The energy gap as a function of temperature is determined byabsorption edge and luminescence peak,respectively and the both results are coincident. |
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| Keywords: | Far-infrared reflection spectra Raman scattering Optical absorption Photoluminescence |
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