Desorption of atomic hydrogen from graphene on hexagonal boron nitride

We have measured desorption of atomic hydrogen from graphene devices on hexagonal boron nitride. Compared to graphene devices on silicon oxide, chemisorbed hydrogen desorbs over much narrower range of temperatures, indicating that hydrogen interacts more uniformly with graphene on hexagonal boron nitride. Our results indicate that hexagonal boron nitride will make an ideal substrate for achieving the intrinsic adsorbate-graphene interaction and developing graphene-based sensors, hydrogen storage devices and other applications that can be affected by graphene-adsorbate interactions.