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 NxBy-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 of in situ gas monitoring and regulating the precursor temperature over time we achieve uniform release of volatile chemical species over many hours for the first time, paving the way towards the controlled, industrially viable production of h-BN.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Babenko V,Lane G,Koos AA,Murdock AT,So K,Britton J,Meysami SS,Moffat J,Grobert Ndoi
10.1038/s41598-017-14663-8subject
Has Abstractpub_date
2017-10-30 00:00:00pages
14297issue
1issn
2045-2322pii
10.1038/s41598-017-14663-8journal_volume
7pub_type
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