▎ 摘　　要

NOVELTY - Optical element comprises a substrate, a first multilayer graphene provided on the substrate and having a thickness of ≤ 5 nm, a first electrode connected to the first multilayer graphene, and a second electrode connected to the first multilayer graphene. USE - As optical element. ADVANTAGE - The optical element has improved light absorption efficiency. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for manufacturing the optical element, which involves forming a multi-layered graphene having a thickness of ≤ 5 nm provided on the substrate, patterning the multi-layered graphene by an etching process using a mask to form a first multi-layered graphene, and forming a first electrode and a second electrode connected to the first multilayer graphene.