Absolute quantum yields in NaYF4:Er,Yb upconverters – synthesis temperature and power dependence

Daniel O. Faulkner; Srebri Petrov; Doug D. Perovic; Nazir P. Kherani; Geoffrey A. Ozin

doi:10.1039/C2JM33457G

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Absolute quantum yields in NaYF₄:Er,Yb upconverters – synthesis temperature and power dependence†

Daniel O. Faulkner,^ab Srebri Petrov,^a Doug D. Perovic,^b Nazir P. Kherani^bc and Geoffrey A. Ozin*^a

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* Corresponding authors

^a Department of Chemistry, University of Toronto, 80 St. George St., Toronto, Ontario, Canada
E-mail: gozin@chem.utoronto.ca

^b Department of Materials Science & Engineering, University of Toronto, 184 College St., Toronto, Ontario, Canada

^c Department of Electrical & Computer Engineering, University of Toronto, 10 King's College Rd., Toronto, Ontario, Canada

Abstract

We investigate the temperature and power dependence of the emission quantum yield of NaYF₄:Er,Yb upconverters. We show that the quantum yields may vary by almost three orders of magnitude. We demonstrate that formation of the hexagonal phase of this material is not in itself sufficient to guarantee high upconversion efficiency.

This article is part of the themed collection: Nanomaterials for Energy Conversion and Storage

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Article information

DOI: https://doi.org/10.1039/C2JM33457G
Article type: Communication
Submitted: 29 May 2012
Accepted: 21 Jul 2012
First published: 25 Jul 2012

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J. Mater. Chem., 2012,22, 24330-24334

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Absolute quantum yields in NaYF₄:Er,Yb upconverters – synthesis temperature and power dependence

D. O. Faulkner, S. Petrov, D. D. Perovic, N. P. Kherani and G. A. Ozin, J. Mater. Chem., 2012, 22, 24330 DOI: 10.1039/C2JM33457G

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Journal of Materials Chemistry