Finite Element Method (FEM) Study on Space Charge Effects in Organic Light Emitting Diodes (OLED)

In this paper, we present a finite element method (FEM) study on the space charge effects in organic light emitting diodes. The physical model covers all the key physical processes in OLEDs,namely charge injection, transport and recombination,exciton diffusion, transfer and decay as well as light co...

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Bibliographic Details
Published inJournal of semiconductor technology and science Vol. 12; no. 4; pp. 467 - 472
Main Authors Kim, Kwang-Sik, Hwang, Young-Wook, Won, Tae-Young
Format Journal Article
LanguageEnglish
Published 대한전자공학회 01.12.2012
Subjects
전기공학
Organic light emitting diodes (OLEDs)
finite element method (FEM)
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Summary:In this paper, we present a finite element method (FEM) study on the space charge effects in organic light emitting diodes. The physical model covers all the key physical processes in OLEDs,namely charge injection, transport and recombination,exciton diffusion, transfer and decay as well as light coupling, and thin-film-optics. The exciton model includes generation, diffusion, and energy transfer as well as annihilation. We assumed that the light emission originates from oscillation which thus is embodied as exciton in a stack of multilayer. We discuss the accumulation of charges at internal interfaces and their signature in the transient response as well as the electric field distribution. We also report our investigation on the influence of the insertion of the KCI Citation Count: 1
Bibliography:G704-002163.2012.12.4.004
ISSN:1598-1657
2233-4866
DOI:10.5573/jsts.2012.12.4.467