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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.12 [2005] >
IJEMS Vol.12(4) [August 2005] >
| Title: | Blue-green emission from organic light emitting diodes based on aluminum complex |
| Authors: | Misra, Aparna
Kumar, Pankaj
Kumar, Lokendra
Ganesh, Nikhil
Gupta, Mohit
Dhawan, S K
Kamalasanan, M N
Chandra, Subhas |
| Issue Date: | Aug-2005 |
| Publisher: | CSIR |
| IPC Code: | G02B6/00, H01L29/861 |
| Abstract: | Bluish-green emission from double layer organic
light emitting diode (OLED), based on an aluminium complex, bis-(2-methyl
8-hydroxyquinoline) aluminium hydroxide (Almq2OH), as an emissive
material and N,N'-bis(3-methylphenyl)-N,N'-bis(phenyl)benzidine (TPD), as hole transport material with an
electro-luminescence maximum at 506 nm, has been reported. The good thermal
stability, good performance for the OLED applications, and a noticeable blue
shift in the electroluminescence, in comparison to Alq3, make this
Al complex a good contender for OLED applications for light emission in the
blue-green region. It was also found that the devices based on this material
have a slightly higher turn-on voltage than similar Alq3 devices.
This can be attributed to the higher energy-gap of the material. The
photoluminescence and electroluminescence spectra are reported and a shift of 9
nm in peaks is observed. The current-voltage characteristics of the device have
also been studied. |
| Page(s): | 321-324 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.12(4) [August 2005]
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