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《Laser & Infrared》 2011-01
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MATLAB analysis and computation of OLED charge injection model

WANG Yi-feng,TANG Li-bin,YUE Qing(Kunming Institute of Physics,Kunming 650223,China)  
The model of charge injection from a metallic electrode of organic light emitting diodes(OLED)into a random hopping system,e.g.,a conjugated polymer or a molecularly doped polymer,is presented in this paper.It encompasses injection of a charge carrier from the Fermi level of the electrode into tail states of the distribution of hopping states of the dielectric followed by either return of the charge carrier to the electrode or diffusive escape from the attractive image potential.The latter process resembles Onsager-type geminate pair dissociation in one dimension.The model treats the injection current as a function of electric field,temperature and energetic width of the distribution of hopping states.The concept of relative current density of OLED device is proposed.The methods and skills of analysis and computation of the model with MATLAB is introduced.
【CateGory Index】: TN383.1
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