Document Detail


Synthesis and luminescence properties of Ca(3) Ga(2) Si(3) O(12) :RE(3+) (RE = Eu/Tb) powder phosphors.
MedLine Citation:
PMID:  21491579     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Rare earth ions (Eu(3+) or Tb(3+) )-activated Ca(3) Ga(2) Si(3) O(12) (CaGaSi) phosphors were synthesized by using a sol-gel method. Photoluminescence spectra of Eu(3+) :CaGaSi phosphors exhibited five emission bands at 578, 592, 612, 652 and 701 nm, which were assigned to the transitions ((5) D(0)  → (7) F(0) , (7) F(1,) (7) F(2) , (7) F(3) and (7) F(4) ), respectively, with an excitation wavelength of λ(exci)  = 392 nm. Among these, the transition (5) D(0)  → (7) F(2) (612 nm) displayed bright red emission. In the case of Tb(3+) :CaGaSi phosphors, four emission bands were observed at 488 ((5) D(4)  → (7) F(6) ), 543 ((5) D(4)  → (7) F(5) ), 584 ((5) D(4)  → (7) F(4) ) and 614 nm ((5) D(4)  → (7) F(3) ) from the measurement of PL spectra with λ(exci)  = 376 nm. Among these, the transition (5) D(4)  → (7) F(5) at 543 nm displayed bright green emission. The structure and morphology of the phosphors were studied from the measurements of X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray analysis (EDAX) results. Copyright © 2011 John Wiley & Sons, Ltd.
Authors:
M Bhushana Reddy; S Sailaja; K Vemasevana Raju; C Nageswara Raju; P Giridhar; B Vengala Rao; B Sudhakar Reddy
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-4-13
Journal Detail:
Title:  Luminescence : the journal of biological and chemical luminescence     Volume:  -     ISSN:  1522-7243     ISO Abbreviation:  -     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-4-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100889025     Medline TA:  Luminescence     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 John Wiley & Sons, Ltd.
Affiliation:
Department of Physics, SV Degree College, Kadapa, YSR District, 516003, India.
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