title: Bio-sorbable, liquid electrolyte gated thin-film transistor based on a solution-processed zinc oxide layer.
abstract: Among the metal oxide semiconductors, ZnO has been widely investigated as a channel material in thin-film transistors (TFTs) due to its excellent electrical properties, optical transparency and simple fabrication via solution-processed techniques. Herein, we report a solution-processable ZnO-based thin-film transistor gated through a liquid electrolyte with an ionic strength comparable to that of a physiological fluid. The surface morphology and chemical composition of the ZnO films upon exposure to water and phosphate-buffered saline (PBS) are discussed in terms of the operation stability and electrical performance of the ZnO TFT devices. The improved device characteristics upon exposure to PBS are associated with the enhancement of the oxygen vacancies in the ZnO lattice due to Na(+) doping. Moreover, the dissolution kinetics of the ZnO thin film in a liquid electrolyte opens the possible applicability of these devices as an active element in "transient" implantable systems.
authors.affiliation: Dipartimento di Chimica Università degli Studi di Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy.
authors.forename: Mandeep
authors.initials: M
authors.lastname: Singh
authors.forename: Gerardo
authors.initials: G
authors.lastname: Palazzo
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Romanazzi
authors.forename: Gian Paolo
authors.initials: GP
authors.lastname: Suranna
authors.forename: Nicoletta
authors.initials: N
authors.lastname: Ditaranto
authors.forename: Cinzia
authors.initials: C
authors.lastname: Di Franco
authors.forename: Maria Vittoria
authors.initials: MV
authors.lastname: Santacroce
authors.forename: Mohammad Yusuf
authors.initials: MY
authors.lastname: Mulla
authors.forename: Maria
authors.initials: M
authors.lastname: Magliulo
authors.forename: Kyriaki
authors.initials: K
authors.lastname: Manoli
authors.forename: Luisa
authors.initials: L
authors.lastname: Torsi
mesh_terms: D000327:Adsorption; D004573:Electrolytes / Q000737:chemistry; D010316:Particle Size; D010710:Phosphates / Q000737:chemistry*; D012996:Solutions; D013499:Surface Properties; D014173:Transistors, Electronic; D014867:Water / Q000737:chemistry*; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D004573:Electrolytes; D010710:Phosphates; D012996:Solutions; D014867:Water; D015034:Zinc Oxide