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Luminescent properties and reduced dimensional behavior of hydrothermally prepared Y <inf>2</inf>SiO <inf>5</inf>: Ce nanophosphors

Cooke, DW and Lee, JK and Bennett, BL and Groves, JR and Jacobsohn, LG and McKigney, EA and Muenchausen, RE and Nastasi, M and Sickafus, KE and Tang, M and Valdez, JA and Kim, JY and Hong, KS (2006) Luminescent properties and reduced dimensional behavior of hydrothermally prepared Y <inf>2</inf>SiO <inf>5</inf>: Ce nanophosphors. Applied Physics Letters, 88 (10). ISSN 0003-6951

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Abstract

Hydrothermally prepared nanophosphor Y2 Si O5: Ce crystallizes in the P 21 c structure, rather than the B2b structure observed in bulk material. Relative to bulk powder, nanophosphors of particle size ∼25-100 nm diameter exhibit redshifts of the photoluminescence excitation and emission spectra, reduced self absorption, enhanced light output, and medium-dependent radiative lifetime. Photoluminescence data are consistent with reduced symmetry of the P 21 c structure and are not necessarily related to reduced dimensionality of the nanophosphor. In contrast, medium-dependent lifetime and enhanced light output are attributed to nanoscale behavior. Perturbation of the Ce ion electric field is responsible for the variable lifetime. © 2006 American Institute of Physics.

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Details

Item Type: Article
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Cooke, DW
Lee, JKjul37@pitt.eduJUL370000-0002-7778-7679
Bennett, BL
Groves, JR
Jacobsohn, LG
McKigney, EA
Muenchausen, RE
Nastasi, M
Sickafus, KE
Tang, M
Valdez, JA
Kim, JY
Hong, KS
Date: 20 March 2006
Date Type: Publication
Journal or Publication Title: Applied Physics Letters
Volume: 88
Number: 10
DOI or Unique Handle: 10.1063/1.2183737
Schools and Programs: Swanson School of Engineering > Mechanical Engineering and Materials Science
Refereed: Yes
ISSN: 0003-6951
Date Deposited: 14 May 2014 16:01
Last Modified: 12 Nov 2019 20:55
URI: http://d-scholarship.pitt.edu/id/eprint/21541

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