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ALIASGHAR AYOBI1,*
This paper investigates the mechanisms affecting on the electrical properties of polymer light-emitting diodes (PLEDs) with the structure of Indium tin oxide (ITO) /poly(para-phenylenevinylene) (Ph-PPV)/Mg in steady state condition. For this purpose, ATLAS SILVACO package, Poole-Frankel mobility model and Langevin recombination model are employed. With using this physical models based simulator, the performance of these devices with inserting 4,4’,4”-tris{N,(3-methylphenyl)- N-phenylamino}-triphenylamine (m-MTDATA),m-MTDATA/ N,N’-diphenyl-N,N’-di(3-methylphenyl)-1,1’ biphenyl-4,4’- Diamine (TPD) and m-MTDATA/ N,N’-biphenyl-N,N’-bis-(1-naphenyl)-[1,1’-biphthyl]4,4’-diamine (NPB) as organic hole transport layers(HTLs) and tris(8-hydroxyquinolinato)aluminum(Alq3) as organic electron transport layer(ETL) is investigated. These layeres lead to the balance of the electron and hole currents,appropriate zone for recombination of charge carriers, improvement of the recombination rate, modification of the singlet exciton density profile and luminance amplification of these devices. The numerical framework used in this package is based on a 1-D time–independent drift– diffusion model and NEWTON method that in which a set of coupled, non-linear, partial differential equations are solved for simulating of the device operation.
Polymer light-emitting diode (PLED), Exciton, Luminance, Current Density, Recombination Rate.
ALIASGHAR AYOBI, Simulation of electronic processes in multilayer polymer light emitting diodes based on Ph-PPV as emitting layer, Optoelectronics and Advanced Materials - Rapid Communications, 17, 11-12, November-December 2023, pp.502-511 (2023).
Submitted at: Jan. 4, 2023
Accepted at: Dec. 4, 2023
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
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