【摘要】 研究了圆柱形GaN量子点的电调制反射谱,外加电场的变化范围为10~50 kV/cm,在调制电场的作用下,电反射谱具有Franz-Keldysh振荡的特点.当调制电场的强度发生变化时,Franz-Keldysh振荡出现Stark频移,并分别对轻空穴和重空穴作用下的特点进行讨论.更多还原

【Abstract】 The electroreflectrance spectrum of cylindricnal GaN quantum dot has been studied under an electric field intensity which changed from 10 kV/cm to 50 kV/cm.Under the modulated electric field,the ER spectra with energy scaled in E-Eg exhibits Franz-Keldysh oscillation characteristic.The Stark shift happened when the electric field intensity increased with the contribution of light hole(or heavy hole).The characteristic in the condition of light hole and heavy hole is different.更多还原