Son, Dong Ick Kim, Tae Whan Shim, Jae Ho Jung, Jae Hun Lee, Dea Uk Lee, Jung Min Park, Won Il Choi, Won Kook 2024-01-20T19:02:12Z 2024-01-20T19:02:12Z 2021-09-02 2010-07 1530-6984 https://pubs.kist.re.kr/handle/201004/131298 The electrical properties of flexible nonvolatile organic bistable devices (OBDs) fabricated with graphene sandwiched between two insulating poly(methyl methacrylate) (PMMA) polymer layers were investigated Current voltage (I-V) measurements on the Al/PMMA/graphene/PMMA/indium tin-oxide/poly(ethylene terephthalate) devices at 300 K showed a current bistability due to the existence of the graphene, indicative of charge storage in the graphene The maximum ON/OFF ratio of the current bistability for the fabricated OBDs was as large as 1 x 10(7), and the endurance number of ON/OFF switchings was 1 5 x 10(5) cycles, and an ON/OFF ratio of 4 4 x 10(6) was maintained for retention times larger than 1 x 10(5) s No interference effect was observed for the scaled-down OBDs containing a graphene layer The memory characteristics of the OBDs maintained similar device efficiencies after bending and were stable during repetitive bendings of the OBDs The mechanisms for these characteristics of the fabricated OBDs are described on the basis of the I-V results English AMER CHEMICAL SOC NONVOLATILE NANOWIRES Flexible Organic Bistable Devices Based on Graphene Embedded in an Insulating Poly(methyl methacrylate) Polymer Layer Article 10.1021/nl1006036 1 NANO LETTERS, v.10, no.7, pp.2441 - 2447 NANO LETTERS 10 7 2441 2447 scie scopus 000280416200025 2-s2.0-77955340827 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article NONVOLATILE NANOWIRES Flexible organic bistable device graphene polymer memory characteristics