Tailoring of deep-red luminescence in Ca2SiO4:Eu(2+).
Angew Chem Int Ed Engl
; 53(30): 7756-9, 2014 Jul 21.
Article
em En
| MEDLINE
| ID: mdl-24916117
ABSTRACT
We report a new dicalcium silicate phosphor, Ca(2-x)Eu(x)SiO4, which emits red light in response to blue-light excitation. When excited at 450â
nm, deep-red emission at 650â
nm was clearly observed in Ca1.2Eu0.8SiO4, the external and internal quantum efficiencies of which were 44 % and 50 %, respectively. The red emission from Ca(2-x)Eu(x)SiO4 was strongly related to the peculiar coordination environments of Eu(2+) in two types of Ca sites. The red-emitting Ca2SiO4Eu(2+) phosphors are promising materials for next-generation, white-light-emitting diode applications.
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01-internacional
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MEDLINE
Idioma:
En
Ano de publicação:
2014
Tipo de documento:
Article