Paper Title
Optical and Electrical Properties of Lead Sulphide (PbS) Nanoparticle Embedded Polyvinyl Alcohol PVA Nanocomposites for Flexible Electronic Device

Lead sulphide-polyvinyl alcohol (PbS-PVA) nanocomposites have been grown by a chemical bath deposition process at different growth temperature. The plane view transmission electron micrographs clearly indicate the formation of PbS nanoparticles encapsulated in PVA matrix. Selected area electron diffraction (SAED) patterns show that the formation of polycrystalline nature of PbS nanoparticles. The enhancement of energy band gap is attributed to the quantum confinement effect in PbS nanocrystals. The current-voltage characteristics of PbS-PVA nanocomposite films on patterned indium tin oxide (ITO) coated flexible polyethylene terephthalate (PET) substrates with Aluminium (Al) and Silver (Ag) as top contact electrodes have been studied at different growth temperature 60, 80 and 1000C. The flexibility studies of ITO/PbS-PVA/Al and ITO/PbS-PVA/Ag devices have been performed at different bending angles for possible applications in flexible electronic devices. Index Terms - PbS-PVA nanocomposite, Schottky diode, Curren-Voltage, Fexible electronic Device.