Hexagonal Boron Nitride Monolayers as Protective Barriers for Graphene during Thermal Annealing

ACS Applied Nano Materials 2026 Open access

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Authors: Vladimir Calvi, Matthew D. Barnes, Dominique Wehenkel, Michele Buscema, Irene M. N. Groot, Richard van Rijn
DOI: 10.1021/acsanm.5c05267
Cited by: 0
References: 43

Abstract

In this study, we investigate the behavior of CVD-grown monolayer hexagonal boron nitride (h-BN) as a protective barrier on top of CVD-grown monolayer graphene during the removal of poly-(methyl methacrylate) (PMMA) residues by thermal annealing in air. We use a combination of Raman spectroscopy, optical microscopy, and atomic force microscopy to measure the damage of graphene and the efficacy of air annealing as a cleaning method. Our experimental findings demonstrate the effectiveness of h-BN as a protective barrier against graphene damage at temperatures up to 500 °C compared with bare graphene.

Fields of Study & Subjects

Graphene research and applications Boron and Carbon Nanomaterials Research 2D Materials and Applications

Publication details

Journal / source
ACS Applied Nano Materials
Volume
9
Issue
11
Pages
4863–4870
Publication date
5 March 2026
Language
EN