Hwang YW, Lee HG, Won TY.
J Nanosci Nanotechnol. 2015 Jul;15(7):5024-7.In this paper, we report a theoretical study on the electronic-optical properties of the organic light emitting diodes (OLEDs) devices having a multilayer structure which consists of N,N'- bis(3-methylphenyl)-N,N'-bis(phenyl)benzidine (TPD) as a hole transport layer (HTL) and tris(8-hydroxyquinolinato)aluminum (Alq3) as an electron transport layer (ETL). We investigated the angular dependence of the light density of emission as well as CIE chromaticity for devices with and without a distributed Bragg reflector (DBR) between the ITO and the glass wherein the DBR comprise two species of materials with different refractive indices. Read More