Thin films of boron nitride in its sp2-hybridized {form|type|kind} (sp2-BN) have {potential|possible|prospective} use in UV-devices and dielectrics. {Here|Right here}, we {explore|discover} chemical vapor deposition (CVD) of sp2-BN on {various|numerous|different|a variety of|several|many} cuts of sapphire; Al2O3(112Μ 0), Al2O3(11Μ 02), Al2O3(11Μ 00) and Al2O3 (0001) {using|utilizing|making use of|employing|working with|applying} two CVD processes with {different|various|distinct|diverse|unique|distinctive} boron precursors; triethylborane (TEB) and trimethylborane (TMB). Fourier transform infrared spectroscopy (FTIR) showed that sp2-BN grows on {all the|all of the|each of the} sapphire substrates, {using|utilizing|making use of|employing|working with|applying} X-ray diffraction (XRD), 2ΞΈ/Ο diffractograms showed that only Al2O3(112Μ 0) and Al2O3(0001) renders crystalline films and {using|utilizing|making use of|employing|working with|applying} phi(ΙΈ)-scans the {growth|development} of rhombohedral polytype (r-BN) films on these substrates is confirmed. These films are {found|discovered|identified|located} {to be|to become} epitaxially grown on an AlN interlayer {with a|having a|using a} {higher|greater|larger} crystalline {quality|high quality|top quality|good quality|excellent|high-quality} for the films grown {on the|around the} Al2O3(112Μ 0) substrate {which is|that is|which can be} determined {using|utilizing|making use of|employing|working with|applying} omega(Ο)-scans. Our study suggests that Al2O3(112Μ 0) {is the|will be the|may be the|would be the|could be the|is definitely the} most favorable sapphire substrate to {realize|understand|recognize|comprehend} the envisioned applications of r-BN films. 3-Bromo-2-methylpyrazolo[1,5-a]pyridine Formula Pd 122 site PMID:23795974
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