Synthesis of high quality monolayer graphene at reduced temperature on hydrogen-enriched evaporated copper (111) films.

  title={Synthesis of high quality monolayer graphene at reduced temperature on hydrogen-enriched evaporated copper (111) films.},
  author={Li Tao and Jongho Lee and Harry Chou and Milo Holt and Rodney S. Ruoff and Deji Akinwande},
  journal={ACS nano},
  volume={6 3},
We report new findings on the chemical vapor deposition (CVD) of monolayer graphene with negligible defects (≥95% negligible defect-peak over 200 μm × 200 μm areas) on evaporated copper films. Compared to copper foils used in the CVD of graphene, several new unexpected results have been observed including high-quality monolayer synthesis at temperatures <900 °C, a new growth window using a hydrogen-free methane precursor for low-defects, and electron microscope evidence of commensurate growth… 

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