Time dependent decomposition of ammonia borane for the controlled production of 2D hexagonal boron nitride.

ABSTRACT: Ammonia borane (AB) is among the most promising precursors for the large-scale synthesis of hexagonal boron nitride (h-BN) by chemical vapour deposition (CVD). Its non-toxic and non-flammable properties make AB particularly attractive for industry. AB decomposition under CVD conditions, however, is complex and hence has hindered tailored h-BN production and its exploitation. To overcome this challenge, we report in-depth decomposition studies of AB under industrially safe growth conditions. In situ mass spectrometry revealed a time and temperature-dependent release of a plethora of N_xB_y-containing species and, as a result, significant changes of the N:B ratio during h-BN synthesis. Such fluctuations strongly influence the formation and morphology of 2D h-BN. By means

SUBMITTER: Babenko V 

PROVIDER: S-EPMC5662770 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature