Alternating-current and direct-current responses of light-emitting devices based on decacyclene Langmuir-Blodgett films

被引：0
|
作者：
Das, S [1 ]
Chowdhury, A [1 ]
Pal, AJ [1 ]
机构：
[1] Indian Assoc Cultivat Sci, Dept Solid State Phys, Kolkata 700032, W Bengal, India
来源：
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2001年 / 185卷 / 02期
关键词：
D O I：
10.1002/1521-396X(200106)185:2<383::AID-PSSA383>3.0.CO;2-D
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Light-emitting devices have been fabricated with Langmuir-Blodgett films of decacyclene. The devices have been operated under both direct-current (dc) and alternating-current (ac) modes. Frequency response of luminance of such devices under ac voltage has been studied, and moderately high-frequency electroluminescence has been observed from these devices. Light output characteristics, charge injection, and operation mechanism under the two modes have been compared and found to be different. Fowler-Nordheim tunneling mechanism has been found to be applicable in the de case, and space-charge-assisted Electron injection lowered the tunneling barrier ac modes. The transient characteristics of luminance have been studied which supported the role of space charges in device operation.
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收藏
页码：383 / 389
页数：7
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