▎ 摘　　要

NOVELTY - The method comprises using germanium as the target, copper foil graphene as the substrate, and laser as the particle excitation source, and depositing germanium thin films on the copper foil graphene by PLD method. USE - Method for preparing flexible graphene/germanium heterogeneous junction, which is used in photodiode detector used in silicon-based photonics. Can also be used in the field of semiconductor material preparation. ADVANTAGE - The preparation method and transfer method solves the problem that the graphene detector has low photoresponsivity due to the low light absorption rate of graphene, due to the short lifetime of photogenerated carriers in graphene itself, and provides graphene-based heterojunctions with high near-infrared response and high speed. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for transfer method of flexible graphene/germanium heterogeneous junction. DESCRIPTION OF DRAWING(S) - The drawing shows a flow chart illustrating the method for preparing flexible graphene/germanium heterogeneous junction (Drawing includes non-English language text).