分子束外延生长InGaN/AlN量子点的组分研究

Studies on the composition of InGaN/AlN quantum dots grown by molecular beam epitaxy

报道了分子束外延生长的绿光波段InGaN/AlN量子点材料,并综合考虑InGaN量子点的应变弛豫,以及应力和量子限制斯塔克效应对量子点发光波长的影响,提出了一种结合反射式高能电子衍射原位测量与光致荧光测量确定InGaN量子点组分的方法.

In this article we report on the green-light wavelength InGaN/A1N quantum dots （QDs） grown by molecular beam epitaxy, and propose a method to determine the composition of the InGaN QDs by combining reflection high-energy electron diffraction in-situ measurement and photoluminescence measurement, in which the strain relaxation and the influences of strain and quantum-confined Stark effect on the exciton energy are taken into consideration.