The study of aging mechanism in ZnS:Mn thin-film electroluminescent devices grown by MOCVD

被引:22
作者
Wang, CW [1 ]
Sheu, TJ [1 ]
Su, YK [1 ]
Yokoyama, M [1 ]
机构
[1] NATL CHENG KUNG UNIV, DEPT ELECT ENGN, TAINAN 70101, TAIWAN
关键词
D O I
10.1016/S0169-4332(96)00931-2
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Evidence from DLTS and FTIR measurements strongly supports the assertion that the degradation mechanism of ZnS:Mn ACTFEL devices is mainly due to the deep electron trap, E-t, which comes from the Mn activators reacting with surface water molecules. The photoluminescence measurements reveal that the Mn-related E-t trap behaves like a nonradiative center. As a result, poor brightness characteristics including lower brightness and a higher threshold voltage were obtained when samples become aged.
引用
收藏
页码:709 / 713
页数:5
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