The doping process of p-type GaN films

被引:14
|
作者
Chi, GC [1 ]
Kuo, CH [1 ]
Sheu, JK [1 ]
Pan, CJ [1 ]
机构
[1] Natl Cent Univ, Ctr Opt Sci, Chungli 32054, Taiwan
关键词
p-type GaN film; p-type doping;
D O I
10.1016/S0921-5107(00)00365-2
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The formation of p-type GaN him is a key technology in developing optoelectronic devices. P-type doping (concentration similar to 10(17) cm(-3)) has been achieved in grown GaN by metalorganic chemical vapor deposition (MOCVD) with Mg (CP2Mg) doping. The Hall measurement results indicate that Mg diffused GaN films also have p-type conductivity with carrier concentration about 10(17) cm(-3) and a mobility of 10 cm(2) V-1 s(-1). For the as-grown Mg-doped GaN, the room temperature photoluminescence (PL) spectra show a blue emission peak around 420-450 nm, and the spectral peak depends on the carrier concentrations. For Mg-diffused GaN, the PL spectra shows only a broad violet emission for samples diffused at 900-1100 degrees C. (C) 2000 Elsevier Science S.A. All rights reserved.
引用
收藏
页码:210 / 213
页数:4
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