SYNTHESIS AND CHARACTERISATION OF ORGANIC ELECTROLUMINESCENT MATERIALS FOR OLEDs APPLICATIONS

Abstract

The rapid growth of Organic Light Emitting devices due to their potential application in large screen flat panel displays is expected in the coming year. So, their has been much effort into the development of organic electroluminescent materials for use in OLED applications. The report on “synthesis and characterisation of organic electroluminescent materials for OLED applications” contain description of emissive device structure, physics of organic layer structure in an OLED and general description of characterisation technique for materials. The experimental section consists of synthesis of two materials Tris (8- hydroxylquinoline) Alluminium (Alq3) and Tris (2- phenylpyridine) Iridium (III) complex Ir(ppy)3 and fabrication of light emitting diodes applying these materials as emitting layers. The materials were characterised by UV –Vis absorption spectra, photo luminescence spectra, Fourier transform Infra- red spectra and thermo gravimetric analysis (TGA). The EL and I-V characteristics have also been measured. 7