Citation

Ong, Thian Song and Kee, Yeh Yee and R., Chowdhury and Yap, Seong Shan and Tou, Teck Yong (2016) Effects of concentration profile on charge injection in continuously graded mixed-host organic light emitting diode. Thin Solid Films, 618 (A). pp. 60-65. ISSN 0040-6090

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Abstract

Although the mixed-host organic light emitting diode (OLED) has been known for improved performance, the charge injection and mobility may not be uniform in the light emitting layer (EML) hence affecting the exciton formation and recombination. In this work, we investigate the effects of concentration profiles of electron- and hole-transport materials in EML on the charge injection and confinement as a result of in-situ formation of transport layers by thermal evaporation of a pre-mixed source. Experimental results show that the OLED performance depends on the continuously graded concentration profiles, and are correlated to numerical simulations which reveal charge confinement, spatial shift of recombination zone and lowering of hole mobility.

Item Type:	Article
Uncontrolled Keywords:	Continuously graded mixed-host, Electron injection, Recombination zone, Lithium stearate
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7800-8360 Electronics
Divisions:	Faculty of Engineering (FOE)
Depositing User:	Ms Suzilawati Abu Samah
Date Deposited:	12 Dec 2017 16:51
Last Modified:	21 Apr 2021 17:33
URII:	http://shdl.mmu.edu.my/id/eprint/6621

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