title: Nonvolatile optically-erased colloidal memristors.
abstract: A nonconjugated methacrylate terpolymer containing carbazole moieties (electron donors), 1,3,4-oxadiazole moieties (electron acceptors), and Coumarin-6 in the pendant groups was synthesized via free radical copolymerization of methacrylate monomers containing the respective functional groups. The terpolymer was formed into 57 nm particles through a mini-emulsion route. For a thin 100 nm film of the fused particles sandwiched between an indium-tin oxide (ITO) electrode and an Al electrode, the structure behaved as a nonvolatile flash (rewritable) memory with accessible electronic states that could be written, read, and optically erased. The device exhibited a turn-on voltage of ca. -4.5 VDC and a 10(6) current ratio. A device in the ON high conductance state could be reverted to the OFF state with a short exposure to a 360 nm light source. The development of semiconducting colloidal inks that can be converted into electroactive devices through a continuous processing method is a critical step in the widespread adoption of these 2D manufacturing technologies for printed electronics.
authors.affiliation: Department of Materials Science and Engineering, Center for Optical Materials Science and Engineering Technologies, Clemson University, Clemson, SC 29634-0971, USA. foulger@clemson.edu.
authors.forename: Christopher F
authors.initials: CF
authors.lastname: Huebner
authors.forename: Volodymyr
authors.initials: V
authors.lastname: Tsyalkovsky
authors.forename: Yuriy
authors.initials: Y
authors.lastname: Bandera
authors.forename: Mary K
authors.initials: MK
authors.lastname: Burdette
authors.forename: Jamie A
authors.initials: JA
authors.lastname: Shetzline
authors.forename: Charles
authors.initials: C
authors.lastname: Tonkin
authors.forename: Stephen E
authors.initials: SE
authors.lastname: Creager
authors.forename: Stephen H
authors.initials: SH
authors.lastname: Foulger