SnO 2 nanocrystals in SiO2: A wide-band-gap quantum-dot system
- 26 August 2002
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 81 (9), 1702-1704
- https://doi.org/10.1063/1.1503154
Abstract
Nanoclusters of crystalline have been grown in glass, starting from tin-doped silica prepared by a sol–gel method. Based upon a particular choice of molecular precursors, nanocrystallites with a mean radius of about 1 nm and a quite narrow size dispersion were obtained, resulting in wide-band-gap (>4 eV) quantum dots (QDs). In this system, differently from other semiconductor-doped glasses, both the glassy host and the nanophase are oxides of IV-group elements. Owing to their thermochemical compatibility, the two phases give stable optical-grade glass ceramics with potential applications in photonics, opening up the field to technological employments of wide-band-gap QDs.
Keywords
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