- Chemical and Bandgap Engineering in Monolayer Hexagonal Boron Nitride.
Chemical and Bandgap Engineering in Monolayer Hexagonal Boron Nitride.
Scientific reports (2017-04-04)
Kun Ba, Wei Jiang, Jingxin Cheng, Jingxian Bao, Ningning Xuan, Yangye Sun, Bing Liu, Aozhen Xie, Shiwei Wu, Zhengzong Sun
PMID28367992
ZUSAMMENFASSUNG
Monolayer hexagonal boron nitride (h-BN) possesses a wide bandgap of ~6 eV. Trimming down the bandgap is technically attractive, yet poses remarkable challenges in chemistry. One strategy is to topological reform the h-BN's hexagonal structure, which involves defects or grain boundaries (GBs) engineering in the basal plane. The other way is to invite foreign atoms, such as carbon, to forge bizarre hybrid structures like hetero-junctions or semiconducting h-BNC materials. Here we successfully developed a general chemical method to synthesize these different h-BN derivatives, showcasing how the chemical structure can be manipulated with or without a graphene precursor, and the bandgap be tuned to ~2 eV, only one third of the pristine one's.