Study of Structure, Morphological and Optical Characteristics of PEDOT:PSS/NPB/Alq3:DCJTB/Alq3/Ca Organic Light Emitting Diode structure

Abstract

In the research article, optical and electrical feature simulations of organic light-emitting diode (OLED) to comprehend the mechanics of EHP (electron hole pair) recombination and light generation from the OLED. Under simulation, OLED structure based on a heterostructure PEDOT:PSS/NPB/Alq3:DCJTB/Alq3/Ca, variations in anode voltage and anode current have been used to study the behavior of excitons linked to EML and ETL.The Holstein model has been used for the Alq₃ (host molecule) and DCJTB(dopant molecule) spectra in electron transport and emissive layers to simulate the spectral features.Förster energy transfer between the host to the dopant materials investigated. Furthermore, this study takes into account the quenching processes associated with dopant concentration and electrodes. As a result, I-V characteristics, Langevin recombination rate, output spectrum power density, luminescent power,spectral luminous flux and spectral radiance are obtained. Based on the results, the operating voltage is around 3.7 V obtained. The proposed OLED has flexible light source for the emission of photons with a wavelength of approximately 560nm.Therefore, this study will provide some theoretical guidance for future development of host-guest materials in OLED.