Article
Photoluminescence from germanate glasses containing silicon nanocrystals and erbium ions
Registro en:
da Silva, D.S., Naranjo, L.P., Kassab, L.R.P. et al. Photoluminescence from germanate glasses containing silicon nanocrystals and erbium ions. Appl. Phys. B 106, 1015?1018 (2012).
0946-2171
Autor
da Silva, Diego Silv?rio
Naranjo, Luz Patr?cia
Pires Kassab, Luciana Reyes
de Ara?jo, Cid B.
Institución
Resumen
We report the first observation of photolumines-cence enhancement in Er 3+ doped GeO 2-Bi 2O 3 glasses containing silicon nanocrystals (Si-NCs) excited by a laser operating at 980 nm. The growth of ? 200% in the intensity of the Er 3+ transition 4S 3/2 ? 4I 15/2 (545 nm) and of ? 100% for transitions 2H 11/2 ? 4I 15/2 (525 nm), 4F 9/2 ? 4I 15/2 (660 nm), and 4I 5/2 ? 4I 13/2 (1530 nm) was observed in comparison with a reference sample that does not contain Si-NCs. The results open a new road for obtaining efficient Stokes and anti-Stokes emissions in germanate composites doped with rare-earth ions. Universidad de Ibagu?