Ga-bound excitons in 3C-, 4H-, and 6H-SiC

被引:23
作者
Henry, A
Hallin, C
Ivanov, IG
Bergman, JP
Kordina, O
Lindefelt, U
Janzen, E
机构
[1] UNIV SOFIA,FAC PHYS,BU-1126 SOFIA,BULGARIA
[2] ABB CORP RES,S-72178 VASTERAS,SWEDEN
[3] LINKOPING UNIV,DEPT PHYS & MEASUREMENT TECHNOL,S-58183 LINKOPING,SWEDEN
来源
PHYSICAL REVIEW B | 1996年 / 53卷 / 20期
关键词
D O I
10.1103/PhysRevB.53.13503
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We report a photoluminescence (PL) study from p-type gallium-doped SiC epilayers, which reveals a PL spectrum constituted of a set of sharp lines and interpreted as excitons bound to the Ga acceptor. The PL spectrum consists of several zero-phonon lines, which are very close to or superimposed on the nitrogen-bound excitons in the 4H- and 6H-SiC. The intensity of the PL spectrum depends on the Ga concentration introduced during the growth of the epilayers. The applicability of the Haynes rule is shown for the accepters in SiC. A comparison with the aluminum-bound exciton is also presented.
引用
收藏
页码:13503 / 13506
页数:4
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