▎ 摘　　要

NOVELTY - Atomic-transfer of clean chemical vapor deposited graphene comprises selecting organic solvents comprising trifluoroacetic acid, formic acid, and/or oxalic acid, preferably acetic acid to remove polymethyl methacrylate (PMMA) coating. USE - Method for atomic transfer of clean chemical vapor deposited graphene used for constructing electronic device, particularly field effect transistors, LED, and transparent electrode for interface theory (all claimed). ADVANTAGE - The graphene has large surface area, structural integrity, fewer defects and PMMA residues. The method is easy and provides little PMMA residue.