High speed and high density organic electrochemical transistor arrays, Applied Physics Letter, 99, 163304 (2011)

High speed and high density organic electrochemical transistor arrays, Applied Physics Letter, 99, 163304 (2011) Dion Khodagholy, 1, Moshe Gurfinkel, 1,Eleni Stavrinidou, 1,Pierre Leleux,1,2,3 Thierry Herve, 2, Sebastien Sanaur,1 and George G. Malliaras, 1, 1 Department of Bioelectronics, Centre Microe´lectronique de Provence, Ecole Nationale Supe´rieure des Mines de Saint Etienne, 880 route de Mimet, 13541 Gardanne, France 2 Microvitae Technologies, Poˆle d’Activite´ Y. Morandat, 1480 rue d’Arme´nie, 13120 Gardanne, France 3 INSERM U-751, Universite´ de laMe´diterrane´e, Faculte´ deMe´decine La Timone, 27 Bd. Jean Moulin, 13385 Marseille Cedex 05, France

 A generic lithographic process is presented that allows the fabrication of high density organic electrochemical transistor arrays meant to interface with aqueous electrolytes. The channels of the transistors, which were 6 µm long, were made of the conducting polymer poly (3,4-ethylenedioxythiophene) doped with poly(styrene sulfonate) and were in direct contact with phosphate buffered saline. Source and drain electrodes and interconnects were insulated by parylene C, a biocompatible material. The transistors operated at low voltages and showed a response time of the order of 100 µs.

 

http://apl.aip.org/resource/1/applab/v99/i16/p163304_s1?bypassSSO=1