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Abstract
The photoelectric properties of pristine, Mn-doped, Fe-doped and Co-doped graphene are investigated by DFT investigation. Doped graphene exhibits interesting tuning of electronic and optical properties. The gap value of Mn-doped graphene is the largest, 0.312 eV, then Fe-doped graphene, 0.214 eV, and Co-doped graphene, 0.070 eV. The absorption peaks of doped graphene become weak, especially the peaks of Mn-doped graphene. The optical absorption edge of doped graphene have a clear blue-shift to a higher energy region. Besides, the peaks of energy loss function are much lower, indicating that the introduction of metal atoms reduces the excitation energy of the plasma.
Acknowledgements
The authors acknowledge the financial support.
Additional information
Funding
This research was supported by National Natural Science Foundation of China (Grant 51677044), Natural Science Foundation of Heilongjiang (Grant E2018047) and the Outstanding Youth Innovation Foundation of Harbin [grant number 2017RAYXJ022].