Influence of compensation on the luminescence of nitrogen-doped ZnSe epilayers grown by MOVPE

被引：23
|
作者：
Heitz, R
Moll, E
Kutzer, V
Wiesmann, D
Lummer, B
Hoffmann, A
Broser, I
Baume, P
Taudt, W
Sollner, J
Heuken, M
机构：
[1] UNIV BREMEN,INST FESTKORPERPHYS,D-28334 BREMEN,GERMANY
[2] RHEIN WESTFAL TH AACHEN,INST HALBLEITERTECH,D-52056 AACHEN,GERMANY
来源：
JOURNAL OF CRYSTAL GROWTH | 1996年 / 159卷 / 1-4期
关键词：
D O I：
10.1016/0022-0248(95)00817-9
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
The luminescence of ZnSe grown by metalorganic vapour phase epitaxy and doped by a DC nitrogen plasma is investigated. With increasing N-2 flux the donor-acceptor pair (DAP) band continuously develops into a structureless band peaking at 2.62 eV for highest doping levels. This broad band evolves back into a structured DAP band peaking at 2.698 eV with increasing excitation density. At high N concentrations and at large degree of compensation potential fluctuations become important for the spatially indirect DAP recombination. These fluctuations can easily be screened by optically excited carriers making the experimental conditions decisive for luminescence spectra of strongly doped ZnSe:N samples.
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页码：307 / 311
页数：5
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