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Luminescence in cubic boron nitride doped by rare‐earth impurity
Author(s) -
Shishonok E. M.,
Philipp A. R.,
Shishonok N. A.,
Anichenko N. G.
Publication year - 2005
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.200440050
Subject(s) - cathodoluminescence , multiplet , luminescence , impurity , boron nitride , doping , monoclinic crystal system , materials science , analytical chemistry (journal) , boron , nitride , crystallography , chemistry , spectral line , nanotechnology , crystal structure , physics , optoelectronics , organic chemistry , chromatography , layer (electronics) , astronomy
We report shortly the observation of visible cathodoluminescence (CL) from micropowders of Eu‐doped cubic boron nitride synthesized under high‐pressure/high‐temperature conditions and also annealed in a vacuum in the temperature range from 400 to 1100 °C. The multiplet of lines due to the intra‐ 4f transitions on the Eu 3+ ion is detected in spectral region from 580 to 740 nm. The fact that the main line of the multiplet has the highest intensity, and the removed degeneracy of the 7 F 1 and 7 F 2 electronic levels represented by the second and third bands of the multiplet allow the conclusion that the red luminescence is due to the Eu 2 O 3 inclusions in the monoclinic form (probably, as nano particles) incorporated into the cBN grains. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)