Doped organic electroluminescent devices with improved stability
作者:
Jianmin Shi,
C. W. Tang,
期刊:
Applied Physics Letters
(AIP Available online 1997)
卷期:
Volume 70,
issue 13
页码: 1665-1667
ISSN:0003-6951
年代: 1997
DOI:10.1063/1.118664
出版商: AIP
数据来源: AIP
摘要:
Remarkable improvement in stability has been demonstrated in an organic electroluminescent (EL) device using a doped emitter consisting of 8-hydroxyquinoline aluminum (Alq) as the host and N,N-dimethylquinacridone (DMQA) as the emissive dopant. A luminance half-life on the order of about 7500 h has been achieved in the DMQA/Alq EL device, operating under a constant current of 20mA/cm2and starting at a high luminance of 1400cd/m2.The improved stability was attributed to the elimination of intermolecular hydrogen bonding between the dopant molecules. ©1997 American Institute of Physics.
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