Luminescence properties of sol-gel-derived organic-inorganic composite films dispersed with erbium and neodymium oxalate nanoparticles

Wenxiu Que; Kantisara Pita; Qinyuan Zhang; Chan Hin Kam

doi:10.1117/12.446530

29 October 2001 Luminescence properties of sol-gel-derived organic-inorganic composite films dispersed with erbium and neodymium oxalate nanoparticles

Wenxiu Que, Kantisara Pita, Qinyuan Zhang, Chan Hin Kam

Author Affiliations +

Proceedings Volume 4594, Design, Fabrication, and Characterization of Photonic Devices II; (2001) https://doi.org/10.1117/12.446530
Event: International Symposium on Photonics and Applications, 2001, Singapore, Singapore

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.

Citation Download Citation

Wenxiu Que, Kantisara Pita, Qinyuan Zhang, and Chan Hin Kam "Luminescence properties of sol-gel-derived organic-inorganic composite films dispersed with erbium and neodymium oxalate nanoparticles", Proc. SPIE 4594, Design, Fabrication, and Characterization of Photonic Devices II, (29 October 2001); https://doi.org/10.1117/12.446530

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