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Updated: Jul 25, 2025

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Atomic-scale identification of nitrogen dopants in graphene on Ir(111) and Ru(0001)
Huan Yang1,2, Ivan Abilio3,4, Juan Bernal Romero1
1Department of Physics and Astronomy, California State University, Northridge, CA 91330, United States of America.
Abstract:
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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