▎ 摘　　要

NOVELTY - The utility model claims a multi-laminated nano-piezoelectric device, form a rectangular structure composed of at least five layers, in turn is gallium nitride-polystyrene stroma layer I, n-type silver doped zinc oxide nano-wire array layer I, nitrogen-doped graphene, n-type silver doped zinc oxide nano-wire array layer II and the gallium-polystyrene stroma layer II is pressed on one side of said gallium nitride-polystyrene stroma layer I connected with an indium tin oxide electrode, one side of the nitrogen-doped graphene layer connected with a graphite electrode. gallium nitride one side of polystyrene stroma layer II is connected with a tin indium oxide electrode II. piezoelectric device of this utility model has higher current and voltage, small volume, can be connected in series, in parallel and can realize stable output, which can be widely used in daily life, which is a passive, environment-friendly piezoelectric device.