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MORA VEERA MADHAVA RAO1,* , CHEOL HEE MOON1,*
- Department of Display Engineering, HoseoUniversity, Baebang, Chonan, South Korea
We have fabricated highly efficient polymer light-emitting devices(PLED) from ionic compound(cesium carbonate) dispersed with organic molecular compound 2-(4-tert-Butylphenyl)-5-(4-biphenylyl)-1,3,4-oxadiazole(PBD), which was used as hole blocking and electron transport layer(HB-ETL) on the top of commercially available light emitting polymer. The device with HB-ETL showed a maximum current efficiency of 2.5 cd/A, while the one without HB-ETL showed an efficiency of 1.3 cd/A. They propose that the better performance in PLED with PBD layer was to a well-balanced charge injection in emitting layer after the enhanced electron transport due to ionic compound in the PBD layer..
Polymer light emitting devices, Interfacial layer, Charge injection, Small molecule.
Submitted at: Aug. 25, 2017
Accepted at: April 5, 2018
MORA VEERA MADHAVA RAO, CHEOL HEE MOON, Solution processed, ionic compound dispersed with small molecular effective interfacial layer for Polymer Light-Emitting Devices, Journal of Optoelectronics and Advanced Materials Vol. 20, Iss. 3-4, pp. 98-101 (2018)
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