# Three-Leaf Dart-Shaped Single-Crystal BN Formation Promoted by Surface Oxygen

Source: [Three-Leaf Dart-Shaped Single-Crystal BN Formation Promoted by Surface Oxygen](<https://www.sota2.com/research/paper/68fa38ae1e209131ce8bc50b>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-24T23:04:43.132Z

Authors: Hui Yang, Jin Yang, Xibiao Ren, Haiyuan Chen, Chennupati Jagadish, Guang-Can Guo, Chuanhong Jin, Xiaobin Niu, Guo-Ping Guo

Published: 2018-09-30T09:12:15.000Z

## Abstract

Two-dimensional hexagonal boron nitride (h-BN) single crystals with various shapes have been synthesized by chemical vapor deposition over the past several years. Here we report the formation of three-leaf dart (3LD)-shaped single crystals of h-BN on Cu foil by atmospheric-pressure chemical vapor deposition. The leaves of the 3LD-shaped h-BN are as long as 18 {\\mu}m and their edges are smooth armchair on one side and stepped armchair on the other. Careful analysis revealed that surface oxygen plays an important role in the formation of the 3LD shape. Oxygen suppressed h-BN nucleation by passivating Cu surface active sites and lowered the edge attachment energy, which caused the growth kinetics to change to a diffusion-controlled mode.

## Recorded benchmark results

A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage.

## Original sources and implementation

[Original paper](<https://arxiv.org/abs/1810.00343>)

[PDF](<https://arxiv.org/pdf/1810.00343.pdf>)