Available online at www.sciencedirect.com ScienceDirect Materials Today: Proceedings 15 (2019) 394–399 www.materialstoday.com/proceedings 2214-7853 © 2019 Elsevier Ltd. All rights reserved. Selection and Peer-review under responsibility of INTERNATIONAL CONFERENCE ON MULTIFUNCTIONAL ADVANCED MATERIALS (ICMAM-2018). ICMAM-2018 Synthesis and characterization of PEDOT:PSS/ZnO nanowires heterojunction on ITO coated plastic substrate for light- emitting diodes Kanchana Shahi a , R S Singh a , Narendra P. Singh b , Mariya Aleksandrova c , Ajaya Kumar Singh* d a Department of Physics, Govt. V Y T P G Autonomous College, Durg, CG,India b Department of Chemistry, Udai Pratap Autonomous PG College Varanasi,UP,India c Department of Microelectronics, Technical University of Sofia, Bulgaria d Department of Chemistry, Govt. V Y T P G Autonomous College, Durg,CG,India Abstract In this paper we report on heterojunction between the hole transporting polymerpoly (3, 4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT: PSS) and zinc oxide (ZnO) nanowires grown on an indium tin oxide (ITO) coated polyethylene terephthalate (PET) plastic substrate. For the fabrication of heterojunction simple and low cost solution methods are used. The deposited films and heterojunction are characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), photoluminescence (PL) and electroluminescence (EL) measurements. Electroluminescent and photoluminescent spectra of the hybrid heterojunction show one ultraviolet (UV) near-band-edge emission peak. The current-voltage characteristic confirms the junction formation between the polymer and ZnO nanowires and shows good rectifying p-n junction diode type behaviour of the fabricated structure. The charge transfer process in heterojunctionis explained by band energy diagram. © 2019 Elsevier Ltd. All rights reserved. Selection and Peer-review under responsibility of INTERNATIONAL CONFERENCE ON MULTIFUNCTIONAL ADVANCED MATERIALS (ICMAM-2018). Keywords: ZnO nanowires, PEDOT: PSS, p-n- heterojunction, flexible electroluminescent diode. *Email address: ajayaksingh_au@yahoo.co.in