We have studied the bonding states of BC2N thin films prepared by chemical vapor deposition, one of the new layered BCN compounds. The chemical bonding states of boron, carbon, and nitrogen atoms in the BC2N thin films were investigated by using x-ray photoelectron spectroscopy to measure chemical shifts of 1s electrons, being compared with those in graphite and hexagonal (h-) BN. The results exhibited that the thin films had significant B–C and C–N bonds and were clearly different from graphite and h-BN, indicating that an atomic-level hybrid of the three elements was synthesized.

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