Figure 7.
Reheating of full-coverage, few-layer h-BN films on Cu in vacuum (∼10–6 mbar), after sample was stored in ambient air for ∼10 months: (a) B1s, (b) N1s, and (c) O1s. From top to bottom: as loaded, at 500 °C, at 700 °C, and post-cooling.
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