TY - JOUR
T1 - Defect photoluminescence in polycrystalline diamond films grown by arc-jet chemical-vapor deposition
AU - Lal, S.
AU - Dallas, T.
AU - Yi, S.
AU - Gangopadhyay, S.
AU - Holtz, M.
AU - Anderson, F.
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1996
Y1 - 1996
N2 - We have studied a series of sharp photoluminescence emission lines between 1.65 and 1.80 eV in synthetic diamond films. The series of lines is decomposed into a set of parent lines plus vibrational sidebands spaced 24 meV apart. This energy does not correspond to any phonons with high density of states in the diamond crystal. The relative intensities of the main lines exhibit no temperature dependence (between 20 and 160 K), implying ground-state splitting. The narrow linewidth and temperature-independent emission energy imply only weak interaction with the diamond host. The temperature-dependence of the linewidth is well described by thermal broadening. We attribute the emission to optical centers as a consequence of tungsten incorporation into the diamond film. The tungsten originates from the electrode during deposition.
AB - We have studied a series of sharp photoluminescence emission lines between 1.65 and 1.80 eV in synthetic diamond films. The series of lines is decomposed into a set of parent lines plus vibrational sidebands spaced 24 meV apart. This energy does not correspond to any phonons with high density of states in the diamond crystal. The relative intensities of the main lines exhibit no temperature dependence (between 20 and 160 K), implying ground-state splitting. The narrow linewidth and temperature-independent emission energy imply only weak interaction with the diamond host. The temperature-dependence of the linewidth is well described by thermal broadening. We attribute the emission to optical centers as a consequence of tungsten incorporation into the diamond film. The tungsten originates from the electrode during deposition.
UR - http://www.scopus.com/inward/record.url?scp=0011184087&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.54.13428
DO - 10.1103/PhysRevB.54.13428
M3 - Article
AN - SCOPUS:0011184087
VL - 54
SP - 13428
EP - 13431
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 1098-0121
IS - 19
ER -