Nanostructured SnO2-SiO2 glassceramic: a competitor for Si nanodots in silica

Norberto Chiodini; Alberto Paleari; Marco Romagnoli

doi:10.1117/12.616537

12 September 2005 Nanostructured SnO₂-SiO₂ glassceramic: a competitor for Si nanodots in silica

Norberto Chiodini, Alberto Paleari, Marco Romagnoli

Proceedings Volume 5925, Nanophotonic Materials and Systems II; 59250J (2005) https://doi.org/10.1117/12.616537
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

Optically transparent nanostructured SiO₂ glassceramics containing a high density of monodispersed, nanometer sized clusters of SnO₂ were obtained by phase separation from sol-gel synthesized xerogel. This material was produced either as bulk samples or as thin films on silicon and it can be easily doped with rare earth ions during the sol-gel synthesis. Spectroscopic measurements were carried out on bulk samples, demonstrating an effective energy-transfer between nanoclusters and rare earth ions. A particular sol-gel derived synthesis was employed, producing silica-based films with relatively low electrical resistivity and thickness ranging between 300 and 1000 nm. Suitable sol features allowed thick single-step deposition by spin-coating techniques, assuring the homogeneous nanosized clustering of the semiconducting SnO₂ phase. Refractive index and thickness were analyzed in films produced in different conditions of synthesis and thermal treatments of densification. The current-voltage response and the electro-induced optical emission in this material were investigated, suggesting potential technological applications in photonics and UV-emitting devices.

Citation Download Citation

Norberto Chiodini, Alberto Paleari, and Marco Romagnoli "Nanostructured SnO₂-SiO₂ glassceramic: a competitor for Si nanodots in silica", Proc. SPIE 5925, Nanophotonic Materials and Systems II, 59250J (12 September 2005); https://doi.org/10.1117/12.616537

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