Printed dielectric-based organic diodes and transistors. (26th February 2016)

• Record Type: Journal Article
• Authors: Gooden, Kristin; Laudari, Amrit; Knotts, Grant; Guha, Suchismita
• Is Part Of: Flexible and printed electronics. Volume 1:Number 1(2016)
• Publication Date: 2016-02-26
• Subjects: inkjet printing -- field-effect transistor -- metal–insulator–semiconductor -- capacitance–voltage; Flexible electronics -- Periodicals; Printed electronics -- Periodicals; Flexible electronics; Printed electronics; Electronic journals; Periodicals; 621.381
• DOI: 10.1088/2058-8585/1/1/015004
• Languages: English
• ISSNs: 2058-8585

Abstract

Abstract: Inkjet and other forms of printing are now popular deposition techniques for the various layers in organic electronic devices, which are crucial for the development of large-scale, low-cost, and flexible electronics. Along with the ease of deposition, inkjet printing provides better control of the organic semiconductor–dielectric interface in field-effect transistors (FETs) and metal–insulator–semiconductor (MIS) diodes, compared to other deposition techniques. We compare the electrical characteristics of inkjet-printed and spincoated poly-4-vinyl phenol (PVP) dielectric layers in pentacene-based and 6, 13-bis(triisopropylsilylethynyl) (TIPS)-pentacene-based FETs and MIS structures. Printed PVP films provide a natural alignment for the growth of TIPS-pentacene, thus improving the interface. TIPS-pentacene on printed PVP shows an order of magnitude higher FET charge carrier mobility compared to TIPS-pentacene on spincoated PVP FETs. Capacitance–voltage and conductance–voltage investigations of the MIS structures yield a lower value for the interface trap density for the printed PVP TIPS-pentacene device compared to the spincoated PVP TIPS-pentacene diode. Thermally grown pentacene on printed and spincoated PVP shows similar performance in MIS and FET structures.