Abstract
Nanoclusters of crystalline SnO2 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.
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@article{Chiodini_2002, title={SnO 2 nanocrystals in SiO2: A wide-band-gap quantum-dot system}, volume={81}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.1503154}, DOI={10.1063/1.1503154}, number={9}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Chiodini, N. and Paleari, A. and DiMartino, D. and Spinolo, G.}, year={2002}, month=aug, pages={1702–1704} }