Mg,Zn掺杂GaN的电子结构与光学性质的计算

Journal of Hebei Normal University(Natural Science Edition)(2019)

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Abstract
运用超软赝势平面波第一性原理方法对Mg,Zn掺杂GaN的晶格参数、电子结构与光学性质进行了计算,结果得到GaN晶体掺杂Mg,Zn后晶格常数变大,带隙由2.084 eV变为2.157,1.934 eV;折射率由2.361增大为5.93,5.81,消光系数峰值向低能方向移动;静态反射率增大,反射峰值增大且位置向高能方向移动;吸收峰值由3.97减小为2.76,2.75,位置向低能方向移动;能量损失峰的位置向低能方向移动.
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