ZnAl2O4:Eu novel phosphor: SEM and mechanoluminescence characterization synthesized by solution combustion technique.
Luminescence
; 30(5): 564-7, 2015 Aug.
Article
in En
| MEDLINE
| ID: mdl-25400230
ABSTRACT
Eu doped ZnAl2O4 phosphors were synthesized by the solution combustion technique using carbohydrazide as a fuel. Mechanoluminescence (ML) was excited impulsively by dropping a piston of 0.7 kg onto the phosphors. Two distinct peaks were observed in the ML glow curve of the γ-ray irradiated ZnAl2O4Eu phosphors. Dependence of ML on various parameters as impact velocity of the piston dropped on to it, mass of the sample, gamma ray doses given to the sample and ML spectra have been studied. ML emission spectrum showed the characteristic emission of Eu(3+) ion in this system. ML is observed to be optimum for the sample having 0.2 mol% of Eu in the ZnAl2O4 phosphor. XRD result confirms formation of the phosphors. SEM characterization shows its surface morphology. This novel phosphor may be a potential candidate for dosimetric use due to its linear dose response.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Zinc
/
Aluminum Compounds
/
Luminescent Agents
/
Europium
Language:
En
Journal:
Luminescence
Journal subject:
BIOFISICA
/
BIOQUIMICA
Year:
2015
Document type:
Article
Affiliation country: