Fine-tuning the thicknesses of organic layers to realize high-efficiency and long-lifetime blue organic light-emitting diodes

By using p-bis（p - N, N-diphenyl-aminostyryl）benzene doped 2-tert-butyl-9, 10-bis-β-naphthyl）-anthracene as an emitting layer, we fabricate a high-efficiency and long-lifetime blue organic light emitting diode with a maximum external quantum efficiency of 6.19% and a stable lifetime at a high initia...

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Bibliographic Details
Published in:Chinese physics B 2012-08, Vol.21 (8), p.186-190, Article 083303
Main Author: 于建宁 张民艳 李崇 尚玉柱 吕燕芳 魏斌 黄维
Format: Article
Language:English
Subjects:
Display devices
Electric potential
Emittance
Illumination
Lighting
Organic light emitting diodes
Quantum efficiency
Voltage
厚度
外部量子效率
微调
有机发光二极管
电流密度
苯乙烯基
蓝色
长寿命
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Summary:By using p-bis（p - N, N-diphenyl-aminostyryl）benzene doped 2-tert-butyl-9, 10-bis-β-naphthyl）-anthracene as an emitting layer, we fabricate a high-efficiency and long-lifetime blue organic light emitting diode with a maximum external quantum efficiency of 6.19% and a stable lifetime at a high initial current density of 0.0375 A/cm2. We demonstrate that the change in the thicknesses of organic layers affects the operating voltage and luminous efficiency greater than the lifetime. The lifetime being independent of thickness is beneficial in achieving high-quality full-colour display devices and white lighting sources with multi-emitters.
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/21/8/083303