title: High performing solution-coated electrolyte-gated organic field-effect transistors for aqueous media operation.
abstract: Since the first demonstration, the electrolyte-gated organic field-effect transistors (EGOFETs) have immediately gained much attention for the development of cutting-edge technology and they are expected to have a strong impact in the field of (bio-)sensors. However EGOFETs directly expose their active material towards the aqueous media, hence a limited library of organic semiconductors is actually suitable. By using two mostly unexplored strategies in EGOFETs such as blended materials together with a printing technique, we have successfully widened this library. Our benchmarks were 6,13-bis(triisopropylsilylethynyl)pentacene and 2,8-difluoro-5,11-bis(triethylsilylethynyl)anthradithiophene (diF-TES-ADT), which have been firstly blended with polystyrene and secondly deposited by means of the bar-assisted meniscus shearing (BAMS) technique. Our approach yielded thin films (i.e. no thicker than 30 nm) suitable for organic electronics and stable in liquid environment. Up to date, these EGOFETs show unprecedented performances. Furthermore, an extremely harsh environment, like NaCl 1M, has been used in order to test the limit of operability of these electronic devices. Albeit an electrical worsening is observed, our devices can operate under different electrical stresses within the time frame of hours up to a week. In conclusion, our approach turns out to be a powerful tool for the EGOFET manufacturing.
authors.affiliation: Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) and CIBER-BBN, Campus de la UAB, Bellaterra, 08193, Spain.|School of Physical Science and Technology, Southwest University, Chongqing, 400715, People's Republic of China.
authors.forename: Qiaoming
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) and CIBER-BBN, Campus de la UAB, Bellaterra, 08193, Spain.
authors.forename: Francesca
authors.initials: F
authors.lastname: Leonardi
authors.affiliation: Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) and CIBER-BBN, Campus de la UAB, Bellaterra, 08193, Spain.
authors.forename: Stefano
authors.initials: S
authors.lastname: Casalini
authors.affiliation: Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) and CIBER-BBN, Campus de la UAB, Bellaterra, 08193, Spain.
authors.forename: Inés
authors.initials: I
authors.lastname: Temiño
authors.affiliation: Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) and CIBER-BBN, Campus de la UAB, Bellaterra, 08193, Spain.
authors.forename: Marta
authors.initials: M
authors.lastname: Mas-Torrent
mesh_terms: D000669:Amplifiers, Electronic; D015374:Biosensing Techniques; D004867:Equipment Design; D008853:Microscopy; D018625:Microscopy, Atomic Force; D009279:Naphthacenes / Q000737:chemistry*; D009930:Organic Chemicals / Q000737:chemistry; D011137:Polystyrenes / Q000737:chemistry*; D011199:Potentiometry; D012666:Semiconductors; D014173:Transistors, Electronic; D014867:Water
chemical_list: D009279:Naphthacenes; D009930:Organic Chemicals; D011137:Polystyrenes; D014867:Water; C523499:pentacene