Artículos de revistas
Broad combined orange-red emissions from Eu2+- and Eu3+-doped low-silica calcium aluminosilicate glass
Fecha
2012Registro en:
OPTICS EXPRESS, WASHINGTON, v. 20, n. 12, supl., Part 1, pp. 12658-12665, 38139, 2012
1094-4087
Autor
Lima, Sandro Marcio
da Cunha Andrade, Luis Humberto
Silva, Junior Reis
Bento, Antonio Carlos
Baesso, Mauro Luciano
Sampaio, Juraci Aparecido
Nunes, Luiz Antonio de Oliveira
Guyot, Yannick
Boulon, Georges
Institución
Resumen
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'Eclairage 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. (c) 2012 Optical Society of America