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Highly efficient pure blue electroluminescence from 1,4-bis[2-(3-N-ethylcarbazoryl)vinyl]benzene.
- Source :
- Applied Physics Letters; 12/15/2003, Vol. 83 Issue 24, p5077-5079, 3p, 1 Chart, 4 Graphs
- Publication Year :
- 2003
-
Abstract
- An efficient blue organic light-emitting diode with 1,4-bis[2-(3-N-ethylcarbazoryl)vinyl]benzene doped into 4,4[sup ′]-N,N[sup ′]-dicarbazole-biphyenyl is reported. Maximum luminance and external quantum efficiency are 8500 cd/m[sup 2] and 2.6%. CIE-1931 coordinates are x=0.15, y=0.16. The device performance was further improved by introducing bis(2-methyl-8quinolinato)4-phenylphenolate aluminum to assist electron injection. The maximum luminance and quantum efficiency reached 11000 cd/m[sup 2] and 3.3%, respectively. Föster energy transfer and especially a carrier trapping mechanism are considered to dominate in the process of electroluminescence. © 2003 American Institute of Physics. [ABSTRACT FROM AUTHOR]
- Subjects :
- LIGHT emitting diodes
QUANTUM electronics
ELECTROLUMINESCENCE
Subjects
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 83
- Issue :
- 24
- Database :
- Complementary Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 11649632
- Full Text :
- https://doi.org/10.1063/1.1630855