▎ 摘　　要

NOVELTY - The device has a triangulation provided with a left electrode, a right electrode and a middle area. Two ends of the left and right electrodes are provided with a triangular alkene electrode. The middle area is provided with a head-to-head triangle alkene. A photoelectric nano device takes the middle area as an axis. An orientation of the triangulation is symmetrical structure. USE - Photo-induced pure spin flow Sawtooth graphene device. ADVANTAGE - The device is energy saving, and has low power consumption, and can generate pure spin flow near zero charge flow in it by using illumination, under the condition of no need to add bias voltage. The photo-pure spin flow Sawtooth graphene device fully uses the space structure and the electronic structure characteristics and designs a photoelectric nanometre electronic device with pure spin-flow of the photoelectric device. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a preparation method of a photo-induced pure spin flow Sawtooth graphene device. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the photo-induced pure spin flow Sawtooth graphene device (Drawing includes non-English language text).