Polymer composite of poly(vinyl phenol)-reduced graphene oxide reduced by vitamin C in low energy consuming write-once–read-many times memory devices

We report the application of reduced graphene oxide, using vitamin C as reducing agent, to make a composite with poly(vinyl phenol) as the active layer of write-once–read-many times memory devices. These devices present a high ON/OFF current ratio of 105 when read at 1 V, retain the information for a long time maintaining the ON/OFF current ratio constant, and require low energy for performing at 5 V the memory write (less than 10−8 J cm−2 device active area) and read operations.

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► Memories based on reduced graphene oxide–PVA composite are demonstrated.
► The memories show write-once–read-many times characteristics.
► The devices present ON/OFF current ratio of 105 when read at 1 V.
► The write operation consumes less than 10−8 J cm−2 device active area.
► Vitamin C is used as graphene oxide reducing agent.