title: Inkjet printed, high mobility inorganic-oxide field effect transistors processed at room temperature.
abstract: Printed electronics (PE) represents any electronic devices, components or circuits that can be processed using modern-day printing techniques. Field-effect transistors (FETs) and logics are being printed with intended applications requiring simple circuitry on large, flexible (e.g., polymer) substrates for low-cost and disposable electronics. Although organic materials have commonly been chosen for their easy printability and low temperature processability, high quality inorganic oxide-semiconductors are also being considered recently. The intrinsic mobility of the inorganic semiconductors are always by far superior than the organic ones; however, the commonly expressed reservations against the inorganic-based printed electronics are due to major issues, such as high processing temperatures and their incompatibility with solution-processing. Here we show a possibility to circumvent these difficulties and demonstrate a room-temperature processed and inkjet printed inorganic-oxide FET where the transistor channel is composed of an interconnected nanoparticle network and a solid polymer electrolyte serves as the dielectric. Even an extremely conservative estimation of the field-effect mobility of such a device yields a value of 0.8 cm(2)/(V s), which is still exceptionally large for a room temperature processed and printed transistor from inorganic materials.
authors.affiliation: Institute for Nanotechnology, Karlsruhe Institute of Technology, D-76344 Eggenstein-Leopoldshafen, Germany. subho.dasgupta@kit.edu
authors.forename: Subho
authors.initials: S
authors.lastname: Dasgupta
authors.forename: Robert
authors.initials: R
authors.lastname: Kruk
authors.forename: Norman
authors.initials: N
authors.lastname: Mechau
authors.forename: Horst
authors.initials: H
authors.lastname: Hahn
mesh_terms: D016287:Computer Peripherals; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007287:Inorganic Chemicals / Q000737:chemistry*; D044085:Microfluidics / Q000295:instrumentation*; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000295:instrumentation*; D010087:Oxides / Q000737:chemistry; D010316:Particle Size; D013696:Temperature; D014173:Transistors, Electronic
chemical_list: D007287:Inorganic Chemicals; D010087:Oxides