Growth and Etching of Monolayer Hexagonal Boron Nitride.

Wang, Lifeng; Wu, Bin; Jiang, Lili; Chen, Jisi; Li, Yongtao; Guo, Wei; Hu, Pingan; Liu, Yunqi · Adv Mater · 2015

basic_science · Level V

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Abstract

The full spectrum from attachment-kinetic-dominated to diffusion-controlled modes is revealed for the cases of monolayer h-BN chemical vapor deposition (CVD) growth and Ar/H2 etching. The sets of grown and etched structures exhibit well-defined shape evolution from Euclidian to fractal geometry. The detailed abnormal processes for merging h-BN flakes into continuous structures or film are first observed and explained.