▎ 摘　　要

NOVELTY - Evaluating quality of graphene crystal structure comprises (i) doping the graphene film so that the carrier concentration exceeds N, (ii) performing a van der Pauw-Hall measurement on the doped graphene film every 1 to 5 minutes, obtaining the change rule of carrier concentration with time and the relationship between carrier mobility and carrier concentration, and draw a graph, and (iii) finding the corresponding carrier mobility when the carrier concentration is N from the graph, and determining the quality of the graphene crystal structure by comparing the carrier mobility under the same carrier concentration of N. USE - The method is useful for evaluating quality of graphene crystal structure. ADVANTAGE - The method enables measuring carrier mobility under certain carrier concentration so as to obtain an actual value instead of empirical formula derived value directly to compare, so that quality evaluation of the graphene crystal structure is more accurate and reliable.