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M. A. MOHD SARJIDAN1,* , N. K. ZA’ABA1, S. H. BASRI1, S. N. ZAINI1, M. S. ZAINI1, W. H. ABD MAJID1,*
Organic light-emitting diodes (OLEDs) were fabricated containing guest molecule of Tris(8-hydroxyquinoline) aluminium (Alq3) blend with host molecules of N,N’-diphenyl-N,N’-bis(3-methylphenyl)-1,1’-biphenyl-4,4’-diamine (TPD) and 2-(4-biphenylyl)-5-phenyl-1,3,4-oxadiazole (PBD) small molecules. Optical, photoluminescence (PL), electroluminescence (EL) and impedance properties were investigated with respect to blend systems. Optical energy gap and PL intensity obtained increased in blend systems attributed to high energy transfer from host to guest molecules. Luminance and current efficiency were enhanced for blended OLEDs as compared to that of pure Alq3, related to high accumulation of charge carrier and exciton recombination in guest. Impedance spectra show conductivity of OLEDs was improved by blending technique..
OLED, Small molecules, Optical, Luminescence, Electrical properties.
M. A. MOHD SARJIDAN, N. K. ZA’ABA, S. H. BASRI, S. N. ZAINI, M. S. ZAINI, W. H. ABD MAJID, Blending effect on small molecule based OLED, Optoelectronics and Advanced Materials - Rapid Communications, 7, 7-8, July-August 2013, pp.498-501 (2013).
Submitted at: June 27, 2012
Accepted at: July 11, 2013
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
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