The effects of low power density CO 2 laser irradiation on graphene properties

Ting Huang, Jiangyou Long, Minlin Zhong, Juan Jiang, Xiaohui Ye, Zhe Lin, Lin Li

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)


We report the investigations on structural modifications in monolayer graphene induced by low-power-density CO 2 laser irradiation (2-60 W/cm 2 ). Observed modifications in graphene include the disassembly of crystalline graphene into nanocrystalline structure and the generation of amorphous carbon. It was found that thermal effect played an important role during laser irradiation. By adjusting laser power density, irradiation time and temperature, the structure of graphene can be modified accordingly in a controlled manner. Our approach may enable high-efficiency and economical modification of large-area graphene, which relies on large-area irradiation using low-power-density laser.

Original languageEnglish
Pages (from-to)502-506
Number of pages5
JournalApplied Surface Science
Publication statusPublished - 2013 May 15


  • Graphene
  • Laser irradiation
  • Raman spectrum
  • Thermal annealing
  • XPS


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