DocumentCode :
3437540
Title :
Numerical simulation of transient and steady-state behavior of heterostructure organic LEDs
Author :
Ruhstaller, B. ; Carter, S.A. ; Scott, J.C. ; Barth, S. ; Riel, H. ; Riess, W.
Author_Institution :
Dept. of Phys., California Univ., Santa Cruz, CA, USA
fYear :
2000
fDate :
2000
Firstpage :
413
Lastpage :
418
Abstract :
We present self-consistent numerical simulations of multilayer organic light-emitting diodes in both steady-state and pulsed operation that allow for a deeper understanding of charge accumulation, electric field and recombination zone confinement effects due to internal interfaces. Comparison to experimental transient data is given for bilayer LEDs based on Alq3. The electric field predominantly drops across the Alq3 layer with the electroluminescence delay time determined by electrons passing through this layer. The recombination zone width is limited by the exciton diffusion length, and the current balance highly sensitive to the cathode injection barrier
Keywords :
SCF calculations; charge injection; electroluminescence; electron-hole recombination; excitons; light emitting diodes; organic semiconductors; radiative lifetimes; semiconductor device models; transients; Alq3; bilayer LEDs; cathode injection barrier; charge accumulation; current balance; electric field; electroluminescence delay time; exciton diffusion length; heterostructure organic LEDs; internal interfaces; multilayer organic light-emitting diodes; numerical simulation; pulsed operation; recombination zone confinement; recombination zone width; self-consistent numerical simulations; steady-state behavior; transient behavior; Delay effects; Electroluminescence; Electrons; Excitons; Light emitting diodes; Nonhomogeneous media; Numerical simulation; Organic light emitting diodes; Spontaneous emission; Steady-state;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Compound Semiconductors, 2000 IEEE International Symposium on
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-6258-6
Type :
conf
DOI :
10.1109/ISCS.2000.947191
Filename :
947191
Link To Document :
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