SURFACE EXCITONS IN ZNO CRYSTALS

被引:96
|
作者
TRAVNIKOV, VV [1 ]
FREIBERG, A [1 ]
SAVIKHIN, SF [1 ]
机构
[1] ACAD SCI ESSSR,INST PHYS,TARTU 202400,ESTONIA,USSR
关键词
D O I
10.1016/0022-2313(90)90006-W
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The exciton luminescence of ZnO monocrystals at liquid helium temperature with a picosecond time resolution has been studied. It is shown that the major part of the edge luminescence of ZnO is due to the excitons bound by surface centres. This surface-bound exciton proved to have an unusually short (60 ps) decay time. The Auger process and the radiative recombination are discussed as a possible decay mechanism of these excitons. © 1990.
引用
收藏
页码:107 / 112
页数:6
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