Ionic Liquids for Electrolyte-Gating of ZnO Field-Effect Transistors

Beitrag in einer Fachzeitschrift

Details zur Publikation

Autor(en): Thiemann S, Sachnov S, Porscha S, Wasserscheid P, Zaumseil J
Zeitschrift: Journal of Physical Chemistry A
Verlag: American Chemical Society
Jahr der Veröffentlichung: 2012
Band: 116
Heftnummer: 25
Seitenbereich: 13536--13544
ISSN: 1089-5639


We investigate the influence of the chemical structure of a range of imidazolium-based ionic liquids (IL) on their properties as electrolytes and the device characteristics of electrolyte-gated field-effects transistors (FETs) based on spray-deposited polycrystalline zinc oxide (ZnO). We find a decrease of electron field-effect mobility that correlates with the capacitance of the ionic liquids and not only with the size of the IL-cation. The device stability depends significantly on testing conditions. While they are reasonably stable in nitrogen, ZnO-FETs degrade rapidly in ambient air due to absorption of water by the IL and the resulting ZnO surface reactions. Replacement of the most acidic hydrogen atom of the imidazolium cation and surface passivation of ZnO with hexamethyldisilazane improve environmental stability.

FAU-Autoren / FAU-Herausgeber

Sachnov, Swetlana
Lehrstuhl für Chemische Reaktionstechnik
Thiemann, Stefan
Professur für Nano-Elektronik
Wasserscheid, Peter Prof. Dr.
Lehrstuhl für Chemische Reaktionstechnik
Zaumseil, Jana Prof.
Professur für Nano-Elektronik

Zusätzliche Organisationseinheit(en)
Exzellenz-Cluster Engineering of Advanced Materials


Thiemann, S., Sachnov, S., Porscha, S., Wasserscheid, P., & Zaumseil, J. (2012). Ionic Liquids for Electrolyte-Gating of ZnO Field-Effect Transistors. Journal of Physical Chemistry A, 116(25), 13536--13544.

Thiemann, Stefan, et al. "Ionic Liquids for Electrolyte-Gating of ZnO Field-Effect Transistors." Journal of Physical Chemistry A 116.25 (2012): 13536--13544.


Zuletzt aktualisiert 2018-06-08 um 15:23