Intense green-yellow luminescence from nanostructured SiO2 with codoping of Dy3+ and Al3+

Authors
Li, YH Mo, CM Zhang, LD Liu, RC Liu, YS
Citation
Yh. Li et al., Intense green-yellow luminescence from nanostructured SiO2 with codoping of Dy3+ and Al3+, NANOSTR MAT, 11(3), 1999, pp. 307-310
Citations number
7
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
NANOSTRUCTURED MATERIALS
ISSN journal
09659773 → ACNP
Volume
11
Issue
3
Year of publication
1999
Pages
307 - 310
Database
ISI
SICI code
0965-9773(199905)11:3<307:IGLFNS>2.0.ZU;2-V
Abstract
Bulk SiO2 with nanograin size with different amounts of Dy3+ and Al3+ (NSDA ) doping were prepared by the sol-gel route. The photoluminescence spectra of NSDA were systematically investigated. A very strong green-yellow lumine scent band occurs for the sample with SiO2: Dy3+: Al3+ = 1: 0.014: 0.21 (th e molar ratio) and its intensity approaches quite that of porous Si. Even a fter aging at room temperature in air for 3 months, the luminescent intensi ty of NSDA decays little. (C) 1999 Acta Metallurgica Inc.