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。
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.
出处
《北京大学学报（自然科学版）》
CAS
CSCD
北大核心
1994年第1期71-74,共4页
Acta Scientiarum Naturalium Universitatis Pekinensis
关键词
合金
镓
铟
锑
砷
光学性质
Far-infrared reflection spectra
Raman scattering
Optical absorption
Photoluminescence
