title: Novel low voltage and solution processable organic thin film transistors based on water dispersed polymer semiconductor nanoparticulates.
abstract: Two novel organic thin film transistor structures that combine a hygroscopic insulator with the use of water-dispersed polymer nanoparticles as the active layer are presented. In the first device structure, the semiconducting layer was fabricated from a nanoparticulate suspension of poly-(3-hexylthiophene) prepared through a mini-emulsion process using sodium dodecyl sulfate as the surfactant whereas a surfactant-free precipitation method has been used for the second device structure. In both cases, fully solution processable transistors have been fabricated in a top gate configuration with hygroscopic poly(4-vinylphenol) as the dielectric layer. Both device structures operate at low voltages (0 to -4V) but exhibit contrasting output characteristics. A systematic study is presented on the effect of surfactant on the synthesis of semiconducting nanoparticles, the formation of thin nanoparticulate films and, consequently, on device performance.
authors.affiliation: Centre for Organic Electronic, University of Newcastle, Callaghan, NSW 2308, Australia.
authors.forename: Darmawati
authors.initials: D
authors.lastname: Darwis
authors.forename: Daniel
authors.initials: D
authors.lastname: Elkington
authors.forename: Syahrul
authors.initials: S
authors.lastname: Ulum
authors.forename: Glenn
authors.initials: G
authors.lastname: Bryant
authors.forename: Warwick
authors.initials: W
authors.lastname: Belcher
authors.forename: Paul
authors.initials: P
authors.lastname: Dastoor
authors.forename: Xiaojing
authors.initials: X
authors.lastname: Zhou
mesh_terms: D004560:Electricity; D053758:Nanoparticles / Q000737:chemistry*; D010316:Particle Size; D011108:Polymers / Q000737:chemistry*; D012666:Semiconductors; D012996:Solutions; D013499:Surface Properties; D014173:Transistors, Electronic; D014867:Water / Q000737:chemistry
chemical_list: D011108:Polymers; D012996:Solutions; D014867:Water