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Proceedings Paper

Luminescence properties of sol-gel-derived organic-inorganic composite films dispersed with erbium and neodymium oxalate nanoparticles
Author(s): Wenxiu Que; Kantisara Pita; Qinyuan Zhang; Chan Hin Kam
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Paper Abstract

Erbium oxalate and neodymium oxalate nanoparticles/titania/organically modified silane composite sol-gel thin films for photonic applications have been prepared by combining an inverse microemulsion technique and the sol-gel technique at low temperature. Transmission electron microscopy observation shows that the size of these oxalate nanoparticles is in the range from 10 to 40 nm. Up- conversion emission properties of these composite thin films on silicon substrates have been studied. A relatively strong room-temperature green up-conversion emission at 544 nm has been measured for the composite films dispersed with erbium oxalate nanoparticles upon excitation at 993 nm. An up- conversion emission in violet color from neodymium oxalate nanoparticles upon excitation with a yellow light emission, two UV emissions at 341 nm and 376 nm and a weak blue emission at 467 nm have been obtained. The mechanism of the up-conversion emission has been explained by means of an energy level diagram. The lifetimes of the violet emissions have been measured.

Paper Details

Date Published: 29 October 2001
PDF: 7 pages
Proc. SPIE 4594, Design, Fabrication, and Characterization of Photonic Devices II, (29 October 2001); doi: 10.1117/12.446530
Show Author Affiliations
Wenxiu Que, Nanyang Technological Univ. (Singapore)
Kantisara Pita, Nanyang Technological Univ. (Singapore)
Qinyuan Zhang, Nanyang Technological Univ. (Singapore)
Chan Hin Kam, Nanyang Technological Univ. (Singapore)

Published in SPIE Proceedings Vol. 4594:
Design, Fabrication, and Characterization of Photonic Devices II

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