Broad combined orange-red emissions from Eu²⁺- and Eu³⁺-doped low-silica calcium aluminosilicate glass.
In this paper, a broad combined orange-red emission from Eu²⁺- and Eu³⁺-doped low-silica calcium aluminosilicate (LSCAS) glass is reported. Spectroscopic results demonstrate that it is possible to tune the emission wavelength by changing the excitation wavelength in the UV-Vis region. The color coordinates for the emission spectra were calculated, and using the Commission Internationale de l'Éclairage 1931 and 1976 chromatic diagrams, it is possible to note that they are dependent on the excitation wavelength. In addition, the (u', v') color coordinates for the investigated LSCAS samples are close to the Planckian spectrum in the cold region between 2000 and 2600K. Our results show that the Eu:LSCAS system can be used in a white light phosphor when mixed in aggregate with phosphors using green-yellow luminescent ions.
Grupo de Espectroscopia Óptica e Fototérmica, Universidade Estadual de Mato Grosso do Sul-UEMS, C. P. 351 CEP 79804-970, Dourados, MS, Brazil. smlima@uems.br
Sandro Marcio
SM
Lima
Luis Humberto da Cunha
LH
Andrade
Junior Reis
JR
Silva
Antonio Carlos
AC
Bento
Mauro Luciano
ML
Baesso
Juraci Aparecido
JA
Sampaio
Luiz Antonio de Oliveira
LA
Nunes
Yannick
Y
Guyot
Georges
G
Boulon