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Electrical and Optical Analysis on Green Organic Light Emitting Device Using Finite Element Method

Electrical and Optical Analysis on Green Organic Light Emitting Device Using Finite Element Method

Young Wook Hwang, Hyeon Gi Lee, Tae Young Won

J Nanosci Nanotechnol. 2015 Feb;15(2):1375-8.

PMID: 26353658

Abstract:

In this paper, we report our numerical study on the electronic-optical properties of the organic light emitting diodes (OLEDs) devices. In order to calculate the electrical and optical characteristics such as the transport behavior of carriers, recombination kinetics, and emission property, we undertake the finite element method (FEM) in OLEDs. Our model includes Poisson's equation, continuity equation to account for behavior of electrons and holes and the exciton continuity/transfer equation to account for generation and decay of the exciton. We employ the multilayer structure that consists of Poly(3,4)-ethylendioxy thiophene-polystyrenesulfonate (
Pedot:
PSS); Bis[(1-naphthyl)-N-phenyl]benzidine (α-NPD); 4,4'-N,N'-dicarbazole-biphenyl (CBP) doped with Ir(ppy)3; a 2-(4-Biphenylyl)-5-(4-tert-butylphenyl-1,3,4-oxadiazole) (Bu-PBD). We demonstrate that the refractive indexes of each material affect the emission property and barrier height of the interface influences the behavior of charges and the generation of exciton.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP15082287	2-(4-tert-Butylphenyl)-5-(4-biphenylyl)-1,3,4-oxadiazole		15082-28-7	Price

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