Preparation and characterization of blue light emitting polymer/QD based QDLED and hybrid OLED

In this thesis, quantum dot (QD) and polymer material composites are used in i) emissive and ii) hole transport layers. It is intended to be used the advantages of the inorganic and organic structures together, with using composites structures. Green light emitting ZnCdSSe QD, fluorenyl based blue light emitting polymer (ADS231BE) that ended with POSS group were used together, in the composite of emissive layer. Normalized electroluminescence curves show that the emission is only provided from ADS231BE and the emission can not be obtained from QD. Although blue light efficiency values have decreased, it is determined that device stability increased. The HTL composite has contained, poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT: PSS) and graphene oxide modified with an amine (DOA-GO). DOA-GO and PEDOT:PSS polymer are applied together, for both improvement at the hole transport mechanism and using as a wavelength converter are aimed. Keywords: Organic light emitting diode (OLED), Quantum dot (QD)