Characterization of p-type InxGa1-xN grown by metalorganic chemical vapor deposition

被引:12
作者
Wen, TC
Lee, WI
Sheu, JK
Chi, GC
机构
[1] Natl Chiao Tung Univ, Microelect & Informat Syst Res Ctr, Dept Electrophys, Hsinchu 30050, Taiwan
[2] Natl Cent Univ, Ctr Opt Sci, Chungli 320, Taiwan
关键词
Mg-doped InxGa1-xN; wall measurement; carrier concentration; mobility; in mole fraction; photoluminescence;
D O I
10.1016/S0038-1101(01)00044-2
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This study investigates the electrical and optical characteristics of Mg-doped InxGa1-xN grown by metalorganic chemical vapor deposition. All the Mg-doped InxGa1-xN layers show p-type conduction after thermal annealing. Room temperature (RT) carrier concentration increases exponentially with an In mole fraction increase. The highest hole concentration of bull; Mg-doped InxGa1-xN is 1.65 x 10(19) cm(-3). Also, the RT photoluminescence (PL) spectra of Mg related emissions in InxGa1-xN are displayed. However, the PL peak intensity becomes weak after the post-annealing process on Mg-doped InxGa1-xN. This degradation might be created by the surface dissociation during the post-annealing process. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:427 / 430
页数:4
相关论文
共 8 条
[1]   Hole conductivity and compensation in epitaxial GaN:Mg layers [J].
Kaufmann, U ;
Schlotter, P ;
Obloh, H ;
Köhler, K ;
Maier, M .
PHYSICAL REVIEW B, 2000, 62 (16) :10867-10872
[2]   Efficient hole generation above 1019 cm-3 in Mg-doped InGaN/GaN superlattices at room temperature [J].
Kumakura, K ;
Makimoto, T ;
Kobayashi, N .
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 2000, 39 (3AB) :L195-L196
[3]   Activation energy and electrical activity of Mg in Mg-doped InxGa1-xN (x < 0.2) [J].
Kumakura, K ;
Makimoto, T ;
Kobayashi, N .
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 2000, 39 (4B) :L337-L339
[4]  
NAKAMURA S, 1997, BULE LASER DIODE
[5]  
NEAMEN DA, 1997, SEMICONDUCTOR PHYSIC, P138
[6]   High-transparency Ni/Au ohmic contact to p-type GaN [J].
Sheu, JK ;
Su, YK ;
Chi, GC ;
Koh, PL ;
Jou, MJ ;
Chang, CM ;
Liu, CC ;
Hung, WC .
APPLIED PHYSICS LETTERS, 1999, 74 (16) :2340-2342
[7]   Optical band gap in Ga1-xInxN (O<x<0.2) on GaN by photoreflection spectroscopy [J].
Wetzel, C ;
Takeuchi, T ;
Yamaguchi, S ;
Katoh, H ;
Amano, H ;
Akasaki, I .
APPLIED PHYSICS LETTERS, 1998, 73 (14) :1994-1996
[8]   P-TYPE CONDUCTION IN MG-DOPED GA0.91IN0.09N GROWN BY METALORGANIC VAPOR-PHASE EPITAXY [J].
YAMASAKI, S ;
ASAMI, S ;
SHIBATA, N ;
KOIKE, M ;
MANABE, K ;
TANAKA, T ;
AMANO, H ;
AKASAKI, I .
APPLIED PHYSICS LETTERS, 1995, 66 (09) :1112-1113