Doping behavior of In0.1Ga0.9N codoped with Si and Zn

被引:7
|
作者
Lee, CR [1 ]
Leem, JY
Noh, SK
Son, SJ
Leem, KY
机构
[1] KRISS, Mat Evaluat Ctr, Epitaxial Semicond Grp, Yuseong 305600, Taejeon, South Korea
[2] Jeonbuk Natl Univ, SPRC, Jeonju 561756, Jeonbuk, South Korea
关键词
InGaN; codoping;
D O I
10.1016/S0022-0248(98)00940-3
中图分类号
O7 [晶体学];
学科分类号
0702 ; 070205 ; 0703 ; 080501 ;
摘要
We have studied the codoping characteristics of In0.1Ga0.9N : ZnSi/GaN grown on sapphire (0 0 0 1) substrates. The films were grown in a horizontal MOVPE reactor at the reduced pressure of 300 Torr and 820 degrees C. The FWHMs of the DCXRD for (0 0 0 2) diffraction and PL for band edge emission at room temperature from the undoped In0.1Ga0.9N are 11 arcmin and 80 meV. With the appropriate Zn only doping in undoped In0.1Ga0.9N, the emission peak is shifted from 410 nm which originates from the band edge emission to blue of 460 nm which resulted from the band to acceptor transition due to a deep acceptor level. Besides the shift of the emission peak, the yellow luminescence peak around 600 nm nearly disappeared by the Zn doping. With the optimum codoping of Si in In0.1Ga0.9N : Zn, the intensity of blue emission increases abruptly by decreasing the defect density playing an important role as a nonradiative center. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:78 / 83
页数:6
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