▎ 摘　　要

In this study, the photochemical polymerization using graphene oxide (GO) as initiator generates a new composite film with polypyrrole (PPy) covering the GO nanosheets. The specular reflection infrared spectroscopy reveals the continuous upload of the conjugated polymers. Structures of the as-synthesized films are studied by using Raman and X-ray photoelectron spectroscopy with the aim of gaining an insight into the interface. The electronic properties of the composite films are investigated using solid-phase ultraviolet photoelectron spectroscopy. Fabricated from the synthesized film, the ITO/GO-PPy/Al device exhibits a nonvolatile rewritable memory with a reversible bistable resistance switching and the turn on voltage of 1.7 V. The ON/OFF current ratio reaches 10(5). Analyzing the current-voltage characteristics indicates that the ON-state charge transport follows Ohmic conduction, and the OFF-state charge transport is dominated by trap-limited space charge limited conduction.