▎ 摘　　要

NOVELTY - The structure has a silicon dioxide protection layer (101) provided with a single-layer graphene layer (102) and covered with a positive electrode (100) and a negative electrode (108). The single layer graphene layer is provided with a contact layer (103) and an LED chip p-GaN layer (104) that is matched with the positive electrode and an LED chip n-GaN layer (106). The LED chip n-GaN layer is matched with the negative electrode and arranged on a sapphire substrate (107). The LED chip p-GaN layer is formed with a photonic crystal structure unit. USE - LED-based photonic crystal-single-layer graphene structure. ADVANTAGE - The structure improves light efficiency. DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of an LED-based photonic crystal-single-layer graphene structure. Positive electrode (100) Silicon dioxide protection layer (101) Single-layer graphene (102) Contact layer (103) LED chip p-GaN layer (104) LED chip n-GaN layer (106) Sapphire substrate (107) Negative electrode (108)