空间热梯度辅助的热调制反射光谱

THERMO MODULATION REFLECTANCE SPECTRA ASSISTED BY THE SPACE THERMAL GRADIENT

给出一种新的通过空间热梯度辅助的热调制反射光谱方法，其关键是在空间光谱方法基础上加一热场梯度，无需对材料进行通常空间调制方法的特殊处理．将该方法应用于典型半导体材料ＧａＡｓ，清晰地观察到ＧａＡｓ材料的带间跃迁Ｅ０和其它诸如Ｅ０＋Δ０、Ｅ１、Ｅ１＋Δ１的高能带跃迁．

A new method of thermo modulation reflectance spectrum assisted by space thermal gradient was proposed. The key is to apply a thermal gradient to the usual space modulation spectral method, so that the special sample treatment was avoided. This method was used to study the typical semiconductor GaAs. The interband transition of E 0 , and higher energy transition of E 0+Δ 0,E 1,E 1+Δ 1 in the crystal of GaAs were observed clearly.