Comparison of simulated and experimental data for optimized OLEDs

• Published in: Optical and quantum electronics 2022-04, Vol.54 (4), Article 207
• Main Authors: Akbari Nia, Sakineh, Mohammadi, Shahriar, Seyed Jalili, Yousef
• Format: Article
• Language: English
• Subjects: Argon; Characterization and Evaluation of Materials; Chemical technology; Computer Communication Networks; Contact angle; Electrical Engineering; Indium tin oxides; Lasers; Optical Devices; Optics; Organic light emitting diodes; Photonics; Physics; Physics and Astronomy; Polystyrene resins; Pressure effects; Simulation
• ISSN: 0306-8919; 1572-817X
• DOI: 10.1007/s11082-022-03582-2

Organic light emitting diodes (OLEDs) have developed to show many advantageous and noticeable properties including their flexibility, easy processing, very cost effective chemical technology, and easy combining of organic material, hence having optimized performance is very significant. In this work, in order to enhance OLEDs’ characteristics, we work on the uniformity of indium tin oxide (ITO) as anode, and poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) as Hole Transport Layer by applying argon atmosphere pressure cold jet plasma. We also simulate the device structure (without considering the effect of argon atmosphere pressure cold jet plasma) in order to compare with experimental data. The experimental results show us that having a better uniformity in barriers can lead to decreasing contact angle between ITO, PEDOT:PSS, and Poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) layers. This issue leads to better ohmic connection and better injection. When the experimental data are compared with the simulation data, we conclude that by applying 11 min of argon atmosphere pressure cold jet plasma on the ITO layer and 60 s of it on the PEDOT: PSS layer, the experimental data and the simulation results are well matched.