Nanoparticles formed within porous hosts: A new type of phosphor and storage device

Alan G. Joly*, Wei Chen, Jan Olle Malm, Yining Huang, Jan Olov Bovin

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


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 originate 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.

Original languageEnglish
Pages (from-to)150-165
Number of pages16
JournalProceedings of SPIE- The International Society for Optical Engineering
Publication statusPublished - 2002
Externally publishedYes
EventPhysical Chemistry of Interfaces and Nanomaterials - Seattle, WA, United States
Duration: 7 Jul 20029 Jul 2002


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