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Structure optimization of organic light-emitting devices
- Source :
- Optoelectronics Letters. 5:93-96
- Publication Year :
- 2009
- Publisher :
- Springer Science and Business Media LLC, 2009.
-
Abstract
- A triple layer organic light-emitting diode (OLED) with two heterostructure of indium-tin oxide (ITO)/N,N′-diphenyl-N, N′-bis(1-naphthyl) (1,1′-biphenyl)-4,4′-diamine (NPB)/2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP)/ 8-Hydroxyquinoline aluminum (Alq3)/Mg:Ag has been fabricated by using the vacuum deposition method. The influence of different film thickness of BCP layer on the performance of the OLEDs has been investigated. The results show that when the thickness of the BCP layer film gradually ranges from 0.1-4.0 nm, the electroluminescence (EL) spectra of the OLEDs shift from green to greenish-blue to blue, and the BCP layer acts as the role for the recombination region of charge carriers related to EL spectrum, which enhances the brightness and power efficiency. The power efficiency of the OLEDs reaches to as high as 7.3 lm/W.
- Subjects :
- Materials science
business.industry
Oxide
Heterojunction
Electroluminescence
Condensed Matter Physics
Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials
chemistry.chemical_compound
Vacuum deposition
chemistry
OLED
Optoelectronics
Charge carrier
Electrical and Electronic Engineering
business
Layer (electronics)
Diode
Subjects
Details
- ISSN :
- 19935013 and 16731905
- Volume :
- 5
- Database :
- OpenAIRE
- Journal :
- Optoelectronics Letters
- Accession number :
- edsair.doi...........caf50c804c0023d507c0b9ef1eaa9667