%0 Journal Article
%T Optical Properties of MgxZn1-xO Alloy and Mg0.08Zn0.92O/ZnO Heterostructure Grown by P-MBE<br>Mg_xZn_(1-x)O单晶薄膜和MgZnO/ZnO异质结构的光学性质
%A 吴春霞
%A 吕有明
%A 申德振
%A 李炳辉
%A 张振中
%A 刘益春
%A 张吉英
%A 范希武
%J 半导体学报
%D 2004
%I 
%X Optical properties of Mg xZn 1-xO alloy thin films and Mg 0.08 Zn 0.92O/ZnO heterostructure are reported,which are fabricated on c- plan s sapphire(Al 2O 3) substrates by plasma assisted molecular beam epitaxy (P-M BE).X-ray diffraction indicates the Mg xZn 1-xO films with the ( 002) preference reflection of hexagonal wurtzite structure when x value is c hanged from 0 to 0.14.Reflection high-energy electron diffraction (RHEED) and X-ray double crystal diffraction spectra show that the samples are single-crys tal films.Photoluminescence spectra at room temperature show an intense ultravio let emission,which shifts to high-energy side with increasing x values.This UV emission is attributed to the recombination of donor bound excitons.Absorpti on and PL spectra at RT of Mg 0.08Zn 0.92O/ZnO heterostructure show th at two absorption edges and two emission peaks,respectively.The two peaks are co nsidered to be from the bound exciton transition of MgZnO and the free exciton t ransition of ZnO,respectively.
%K P-MBE
%K Mg
%K xZn
%K 1-xO films
%K MgZnO/ ZnO heterostructure
%K PL
%K RHEED<br>等离子体辅助分子束外延
%K MgxZn1-xO合金
%K MgZnO/ZnO异质结构
%K 光致发光谱
%K 反射式高能电子衍射
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=025C8057C4D37C4BA0041DC7DE7C758F&aid=C4336AB1D0C3F2B4&yid=D0E58B75BFD8E51C&vid=C5154311167311FE&iid=F3090AE9B60B7ED1&sid=A35E3FD659BF2630&eid=08DDB398556FE547&journal_id=1674-4926&journal_name=半导体学报&referenced_num=1&reference_num=17