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Title: Low-voltage polymer/small-molecule blend organic thin-film transistors and circuits fabricated via spray deposition

Organic thin-film electronics have long been considered an enticing candidate in achieving high-throughput manufacturing of low-power ubiquitous electronics. However, to achieve this goal, more work is required to reduce operating voltages and develop suitable mass-manufacture techniques. Here, we demonstrate low-voltage spray-cast organic thin-film transistors based on a semiconductor blend of 2,8-difluoro- 5,11-bis (triethylsilylethynyl) anthradithiophene and poly(triarylamine). Both semiconductor and dielectric films are deposited via successive spray deposition in ambient conditions (air with 40%–60% relative humidity) without any special precautions. Despite the simplicity of the deposition method, p-channel transistors with hole mobilities of >1 cm{sup 2}/Vs are realized at −4 V operation, and unipolar inverters operating at −6 V are demonstrated.
Authors:
;  [1] ; ;  [2] ; ;  [3]
  1. Department of Physics and Centre for Plastic Electronics, Imperial College London, South Kensington SW7 2AZ (United Kingdom)
  2. Department of Physics, Wake Forest University, Winston-Salem, North Carolina 27109 (United States)
  3. Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506 (United States)
Publication Date:
OSTI Identifier:
22415107
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 22; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AMINES; DEPOSITION; DIELECTRIC MATERIALS; HOLE MOBILITY; MOLECULES; POLYMERS; SEMICONDUCTOR MATERIALS; THIN FILMS; THIOPHENE; TRANSISTORS