Abstract
Here we report a convenient and economic method to modulate resistive switching of a bipolar resistive memory based on Al/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)/Al. We found that diluted additive of poly(vinylpyrrolidone) (PVP) in PEDOT:PSS could enlarge the ON/OFF ratio from 103 to 105 and keep a long retention time over 105 s. Besides, the effects of PVP on switching process were studied by detailed analyses of I-V curves, atomic force microscopy images, X-ray photoelectron spectroscopy, and Raman spectra. The enhancement of the resistive window is due to the loss of PEDOT, charge traps, and conformation change induced by PVP.
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