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Optical absorption of boron nitride nanomaterials
Author(s) -
Gevko Pavel,
Bulusheva Lyubov,
Okotrub Alexander,
Koroteev Viktor,
Yushina Irina,
Bresson Lionel,
Loiseau Annick
Publication year - 2008
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200879600
Subject(s) - boron nitride , materials science , absorption (acoustics) , vaporization , band gap , nanomaterials , absorption spectroscopy , analytical chemistry (journal) , boron , nitride , nanotechnology , chemistry , optoelectronics , optics , composite material , physics , organic chemistry , chromatography , layer (electronics)
Optical absorption spectra have been measured for hexagonal boron nitride ( h ‐BN), rhombohedral BN ( rh ‐BN), and material obtained by laser vaporization of BN target under a nitrogen atmosphere and contained single‐wall BN‐nanotubes. Band gap of the BN materials was found to have a value of 6.0‐6.3 eV. The spectra of h ‐BN and vaporized material exhibited a peak at ∼5.5 eV, moreover, the latter sample showed an absorption band around 4.5 eV. The vaporized material has been fractionated to the BN‐platelets and single‐wall BN‐nanotubes. Absorption peaks, located bellow the bottom of the conductance band, were found to be characteristics of thin BN‐platelets and they could be attributed to defects in BN network. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)