High-k polymer-graphene oxide dielectrics for low-voltage flexible nonvolatile transistor memory devices.
CHEMICAL COMMUNICATIONS(2014)
Abstract
Solution-processable nonvolatile transistor memory devices on a flexible ITO-PEN substrate are demonstrated using the charge storage dielectrics of poly(methacrylic acid) and graphene oxide (PMAA-GO) composites. The hydrogen bonding interaction effectively disperses GO sheets in the high-k PMAA matrix, leading to the control on the memory characteristics. Besides, the fabricated transistor memory devices have a low operation voltage, a large threshold voltage shift of 5.3-9.4 V, a long retention ability of up to 10(4) s, and good stress endurance of at least 100 cycles.
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Key words
polymer–graphene oxide dielectrics,low-voltage
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