Atomic-scale Identification of Nitrogen Dopants in Graphene on Ir(111) and Ru(0001).

Huan Yang, Ivan Abilio, Juan Bernal Romero, Carlos Rodriguez, Miguel Escobar Godoy, Mitchell Little, Patrick Mckee, Vanessa Carbajal, Joey Li, Xing Chen,Hong-Jun Gao,Krisztian Palotas,Li Gao

Journal of physics Condensed matter（2023）

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摘要

Nitrogen (N) doped graphene materials have been synthesized using the sole precursor adenine on the Ir(111) and Ru(0001) surfaces. X-ray photoelectron spectroscopy and scanning tunneling microscopy (STM) have been used to characterize the obtained N-doped graphene materials. Several graphitic and pyridinic N dopants have been identified on the atomic scale by combining STM measurements and STM simulations based on density functional theory calculations.

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关键词

nitrogen doped graphene,scanning tunneling microscopy,density functional theory calculations

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