Templateless electrodeposition ZnO nanowires for charge transport optimization in OLED structures. (13th October 2016)

• Record Type: Journal Article
• Authors: Polosan, S; Matei, E; Ciobotaru, I C; Ciobotaru, C C
• Is Part Of: Materials research express. Volume 3:Number 10(2016)
• Publication Date: 2016-10-13
• Subjects: electrochemical deposition -- ZnO nanowires -- electrical properties; Materials science -- Research -- Periodicals; Materials science -- Periodicals; 620.11
• DOI: 10.1088/2053-1591/3/10/105018
• Languages: English
• ISSNs: 2053-1591

Abstract

Abstract: Passivated zinc oxide nanowires (NW) were used to improve the charge injection in organic light-emitting diode (OLED) structures. Conducting polymers, deposited on the well-dispersed ZnO NW, were used to modify the electrical conductivity across the OLED structure because the charge transport is influenced by the interface interactions. Passivation with polymers improves the transport characteristics of the device due to the interaction between ZnO NW and PEDOT:PSS polymer. The hole current density increases with the ZnO NW concentration, which made the current injection more balanced and therefore enhanced the electroluminescence efficiency. A templateless electrochemical deposition method was used to grow zinc oxide nanowires on an ITO/glass substrate because parameters such as the densities and dimensions of the nanowires can be controlled to produce thin and well dispersed structures.