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Proceedings Paper

Nanoparticles formed within porous hosts: a new type of phosphor and storage device
Author(s): Alan G. Joly; Wei Chen; Jan-Olle Malm; Yining Huang; Jan-Olov Bovin
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Paper Abstract

Recent results on the structure and luminescence enhancement of Eu2O3, EuS, and ZnS:Mn2+as well as photo-stimulated luminescence of Ag and AgI nanoparticles encapsulated in porous hosts are presented. Eu2O3 nanoparticles encapsulated in MCM-41 display different structures depending on the temperature used to form the guest-host material. Particles formed following heat treatment at 140° C show monoclinic structure with enhanced luminescence efficiency. This increased efficiency may result from a decrease in the radiative lifetime of the emitter within the host cavity. Similarly, EuS and ZnS:Mn2+ show increased luminescence when encapsulated in zeolite-Y. Ag and AgI nanoparticles encapsulated in zeolite-Y show significant photostimulated luminescence with very short lifetimes. The appearance of strong photostimulated luminescence with short decay times demonstrates that nanoparticles encapsulated in porous host materials have potential for digital storage and medical radiology applications.

Paper Details

Date Published: 15 November 2002
PDF: 16 pages
Proc. SPIE 4807, Physical Chemistry of Interfaces and Nanomaterials, (15 November 2002); doi: 10.1117/12.451001
Show Author Affiliations
Alan G. Joly, Pacific Northwest National Lab. (United States)
Wei Chen, Nomadics, Inc. (United States)
Jan-Olle Malm, Lund Univ. (Sweden)
Yining Huang, Univ. of Western Ontario (Canada)
Jan-Olov Bovin, Lund Univ. (Sweden)

Published in SPIE Proceedings Vol. 4807:
Physical Chemistry of Interfaces and Nanomaterials
Jin Z. Zhang; Zhong L. Wang, Editor(s)

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