Abstract
The present work is focused on the synthesis and characterization of a new polymer thin film material suitable for emissive layer in polymer light-emitting diodes. Thin films of polyaniline and ZnO nanoparticles dispersed polyaniline have been prepared and investigated for the suitability of emissive layer in polymer light emitting diodes. ZnO nanoparticles have been synthesized using wet chemical method and characterized using powder X-ray diffraction. Diffraction pattern reveals that the ZnO nanoparticles are grown in hexagonal wurtzite structure with the preferential orientation of (001) plane. Polyaniline was synthesized using potassium persulphate (initiator) at room temperature. ZnO nanoparticles are then dispersed in different doping level (5%, 10%, 15% 20% and 50%) with polyaniline. Thin films of ZnO dispersed polyaniline (PANI/ZnO) were prepared and characterized using scanning electron microscopy in order to investigate the surface morphology of the film. The optical characteristics and the suitability of film as emissive layer were analyzed using UV-visible absorption and fluorescence spectroscopy.
Highlights
After the discovery of conductivity in polymers and in certain organic molecules, remarkable progress has been made in synthesizing organic materials and in developing them for use in electronic and optical devices [1, 2]
Thin films of PANI and PANI/ZnO have been synthesized by solution polymerization technique with different compositions of ZnO (5, 10, 15, 20 and 50 wt %). 0.1 M of zinc acetate was added in starch solution
The density of ZnO nanoparticles and PANI was determined as 5.59 g/cc. and 1.32 g/cc., respectively
Summary
After the discovery of conductivity in polymers and in certain organic molecules, remarkable progress has been made in synthesizing organic materials and in developing them for use in electronic and optical devices [1, 2]. Zinc oxide has received much attention in recent years due to its diverse properties. It is a direct wide gap semiconductor, and it is a prominent inorganic material for optoelectronic devices. The interest of the researchers has increased rapidly during the last decade in the application of inorganic-organic hybrid polymers for electronic and optoelectronic devices. PLEDs by depositing a p-type polymer, poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate)(PEDOT:PSS) on n-type ZnO nanowires grown by electrodeposition on transparent conducting glass (ITO) substrates have been fabricated and reported [12].
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
