Photoluminescence characteristics of BN(C, H) prepared by chemical vapour deposition

Defect-related photoluminescence of hexagonal boron nitride

“…1 have been recently reported on photoluminescence and cathodoluminescence experiments of commercial hBN powder. 10,[39][40][41][42][43][44][45][46][47][48] However, in these publications, no distinctions were made between the broad band and structured emissions. We now assign the structured UV emission to impurities ͑probably C͒ and the broadband emission to deep DAP of strongly localized center.…”

“…1͑a͒ and 1͑b͔͒ has been reported in the past by numerous groups either in 10,43,46,47 or photoluminescence experiments. 10,14,[39][40][41][42]44,45,47,48 Some authors have assigned it to intrinsic luminescence of hBN molecular layers 47 or to phonon-assisted band-edge luminescence. 42 However, recent experiments 1 and theoretical calculations 34 indicate the hBN band-gap energy in the range from 6 to 6.5 eV that disables these interpretations.…”

Facile Synthesis of New Full‐Color‐Emitting BCNO Phosphors with High Quantum Efficiency

“…As a result, allowed electronic transitions of the t-BN-type matrix are modified and the states generated by carbon are changed. [5] In other words, the shifts of the PL peaks arise from variations in the BCNO bandgap, which accompany changes in the chemical composition of BCNO particles. Previous studies have reported that the bandgaps of BCN compounds depend strongly on the atomic arrangement within the compounds.…”

“…[5][6][7][8][9] Theoretical studies suggest that it should be possible to use BCN materials to tune the wavelength of emitted light across the visible light spectrum by varying the composition of BCN compounds. BCN compounds are expected to behave as semiconductors with bandgap energies that are tunable by varying the atomic composition, since these materials are thought to be intermediates between graphite and hexagonal-BN (h-BN).…”

Compilation on Synthesis, Characterization and Properties of Silicon and Boron Carbonitride Films

“…The X-ray diffraction patterns of the BN(C,H) film synthesized according to reaction (6) were recorded by means of powder diffraction (Kawaguchi et al, 1991); the patterns contain a very broad (001) reflex and several reflexes the positions of which are close to the positions of peaks in t-BN. Additionally, the films synthesized according to reactions (7) and (8) exhibited diffraction patterns with only one diffraction reflex (001), the position of which is close to the positions of reflexes in h-BN, t-BN or graphite.…”