▎ 摘　　要

NOVELTY - Method for controlling and characterizing graphene bandgap involves placing graphene samples in sealed glass cavity, passing helium-neon laser on the surface of the graphene sample, measuring the Raman spectroscopy data, doping the graphene sample by supplying bromine vapor or iodine vapor into the glass sample for predetermined time, measuring the Raman spectroscopy data of the doped graphene sample using computer control system, calculating position of the Raman G peak to peak frequency shift before and after doping, calculating graphene bandgap of Raman peak G and peak frequency shift. USE - Method for controlling and characterizing graphene bandgap (claimed). ADVANTAGE - The method enables simple and efficient manufacture of controlling and characterization of graphene bandgap with high precision and high reliability. DETAILED DESCRIPTION - Method for controlling and characterizing graphene bandgap involves placing graphene samples in sealed glass cavity, passing helium-neon laser on the surface of the graphene sample, measuring the Raman spectroscopy data, doping the graphene sample by supplying bromine vapor or iodine vapor into the glass sample for predetermined time, measuring the Raman spectroscopy data of the doped graphene sample using computer control system, calculating position of the Raman G peak to peak frequency shift before and after doping, calculating graphene bandgap of Raman peak G and peak frequency shift. The coupling coefficient ( Delta ( Omega )) of Raman G peak to peak frequency shift of position of the graphene before and after doping, is calculated using relation of formula: Delta ( Omega )=absolute value of graphene band gapx 42 cm-1eV-1. An INDEPENDENT CLAIM is included for apparatus for controlling and characterizing graphene bandgap.