Influence of the surface morphology on the yellow and "edge" emissions in wurtzite GaN

被引:38
作者
Godlewski, M
Goldys, EM
Phillips, MR
Langer, R
Barski, A
机构
[1] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland
[2] Macquarie Univ, Semicond Sci & Technol Lab, N Ryde, NSW 2109, Australia
[3] Univ Technol Sydney, Microstruct Anal Unit, Sydney, NSW, Australia
[4] CEA Grenoble, DRFMC SP2M, F-38054 Grenoble, France
关键词
D O I
10.1063/1.122863
中图分类号
O59 [应用物理学];
学科分类号
摘要
In this letter we examine an influence of surface morphology on yellow and edge emissions in wurtzite phase GaN. Our cathodoluminescence measurements show that the yellow emission does not correlate with the surface morphology, but simultaneously the "edge" emission shows very strong spatial fluctuations. The observed effect is attributed to granular structures in GaN films and enhancement of the yellow emission in the interface region. (C) 1998 American Institute of Physics. [S00003-6951(98)00751-7].
引用
收藏
页码:3686 / 3688
页数:3
相关论文
共 12 条
[1]  
CHAO LL, 1997, MRS INTERNET NITRIDE, V2
[2]   Microstructure and growth morphology as related to electro-optical properties of heteroepitaxial wurtzite GaN on sapphire (0001) substrates [J].
Christiansen, S ;
Albrecht, M ;
Dorsch, W ;
Strunk, HP ;
Pelzmann, A ;
Mayer, M ;
Kamp, M ;
Ebeling, KJ ;
ZanottiFregonara, C ;
Salviati, G .
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 1997, 43 (1-3) :296-302
[3]   Cathodoluminescence study of GaN epitaxial layers [J].
Cremades, A ;
Piqueras, J ;
Xavier, C ;
Monteiro, T ;
Pereira, E ;
Meyer, BK ;
Hofmann, DM ;
Fischer, S .
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 1996, 42 (1-3) :230-234
[4]  
GIL B, 1997, MATER RES SOC S P, V449, P745
[5]   Time-resolved photoluminescence studies of GaN epilayers grown by gas source molecular beam epitaxy on an AlN buffer layer on (111) Si [J].
Godlewski, M ;
Bergman, JP ;
Monemar, B ;
Rossner, U ;
Barski, A .
APPLIED PHYSICS LETTERS, 1996, 69 (14) :2089-2091
[6]  
KNOBLOCH K, 1998, MRS INTERNET J NITRI, V3
[7]   Depth-resolved and excitation power dependent cathodoluminescence study of GaN films grown by metalorganic chemical vapor deposition [J].
Li, X ;
Coleman, JJ .
APPLIED PHYSICS LETTERS, 1997, 70 (04) :438-440
[8]  
Mason PW, 1997, MATER RES SOC SYMP P, V449, P793
[9]  
PERLIN P, 1997, GAN RELATED MAT, P315
[10]   Correlation of cathodoluminescence inhomogeneity with microstructural defects in epitaxial GaN grown by metalorganic chemical-vapor deposition [J].
Rosner, SJ ;
Carr, EC ;
Ludowise, MJ ;
Girolami, G ;
Erikson, HI .
APPLIED PHYSICS LETTERS, 1997, 70 (04) :420-422