Journal
JOURNAL OF NON-CRYSTALLINE SOLIDS
Volume 355, Issue 48-49, Pages 2425-2428Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jnoncrysol.2009.08.034
Keywords
Luminescence; Silicates
Funding
- Ministry of Education, Culture, Sports, Science and Technology, Japan
- Japan Society of Promotion of Science
- National Basic Research Program of China [2006CB806007]
- National High Technology Program of China [2006AA03Z304]
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We report on highly efficient broadband near-infrared photoluminescence (PL) in Ni2+-doped glass ceramics (GCs) films fabricated by annealing Si/Ni2+-doped glass superlattices (SNGS). Over two orders of magnitude enhancement of PL can be achieved in comparison with that from the annealed glass film. The PL lifetime of the annealed SNGS is several milliseconds, which is much longer than those of bulk GCs. The strong PL enhancement results from the formation of high-quality cordierite nanocrystals because the Si layers act as Si source for the crystal growth. This technique can be extended to fabricate other types of high-quality GCs films. (C) 2009 Elsevier B.V. All rights reserved.
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