Luminescence and ESR studies of CaS : Dy phosphor
DSpace at IIT Bombay
View Archive InfoField | Value | |
Title |
Luminescence and ESR studies of CaS : Dy phosphor
|
|
Creator |
SINGH, V
ZHU, JJ RAO, TKG TIWARI, M PAN, HC |
|
Subject |
electron spin resonance
calcium sulfide thin-films cathodoluminescence parameters eu |
|
Description |
CaS phosphor activated with Dy ions is prepared by the solid-state diffusion method. The phosphor is characterized by x-ray powder diffraction, thermogravimetric analysis and photoluminescence. Defect centres formed in CaS:Dy are studied using the technique of electron spin resonance. The thermoluminescence glow curve shows peaks at around 117 degrees C and 345 degrees C. Irradiated CaS:Dy exhibits ESR lines due to defect centres. The thermal annealing behaviour of one of the defect centres appears to correlate with the TL peaks at 117 degrees C and 345 degrees C. This centre is characterized by an isotropic g-value of 2.0035 and is assigned to an F+- centre.
|
|
Publisher |
CHINESE PHYSICAL SOC
|
|
Date |
2011-07-20T10:13:29Z
2011-12-26T12:51:25Z 2011-12-27T05:36:10Z 2011-07-20T10:13:29Z 2011-12-26T12:51:25Z 2011-12-27T05:36:10Z 2005 |
|
Type |
Article
|
|
Identifier |
CHINESE PHYSICS LETTERS, 22(12), 3182-3185
0256-307X http://dx.doi.org/10.1088/0256-307X/22/12/056 http://dspace.library.iitb.ac.in/xmlui/handle/10054/5437 http://hdl.handle.net/10054/5437 |
|
Language |
en
|
|