Experimental evidence of a mixed amorphous-crystalline graphene/SiC interface due to oxygen-intercalation

Marcos V. Gonçalves-Faria,Edmar A. Soares,Igor Antoniazzi,Rogério Magalhães-Paniago,Roberto H. Miwa,João Marcelo J. Lopes,Ângelo Malachias,Myriano H. Oliveira

Surfaces and Interfaces（2022）

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摘要

•Oxygen intercalation in graphene/SiC systems leads to a highly disordered interface.•Amorphous phases were detected by means of two different experimental techniques.•Silicon oxycarbides (SiOXCY) structures were observed by photoelectron diffraction.•The abundant existence of SiOXCY structures is related to the high degree of disorder.

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关键词

Epitaxial bilayer graphene,2D materials,4H-SiC(0001),Oxygen intercalation,Photoelectron diffraction,X-ray diffraction

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