Efficient oxide phosphors for light upconversion; Green emission from Yb3+ and Ho3+ co-doped Ln2BaZnO5 (Ln = Y, Gd)

Isabelle Etchart; Ignacio Hernández; Arnaud Huignard; Mathieu Bérard; William P. Gillin; Richard J. Curry; Anthony K. Cheetham

doi:10.1039/c0jm01652g

Efficient oxide phosphors for light upconversion; Green emission from Yb³⁺ and Ho³⁺ co-doped Ln₂BaZnO₅ (Ln = Y, Gd)

Isabelle Etchart, Ignacio Hernández, Arnaud Huignard, Mathieu Bérard, William P. Gillin, Richard J. Curry, Anthony K. Cheetham

Research output: Contribution to journal › Article › peer-review

Abstract

The optical properties of Yb³⁺ and Ho³⁺ co-doped Y₂BaZnO₅, synthesized by solid-state reactions, are investigated in detail. Under 977 nm excitation (∼25 × 10^-3 W mm^-2), bright green upconversion emission is observed. Concentration dependence studies at room temperature show that relatively high infrared to visible upconversion efficiencies are obtained with values up to ∼2.6%. The results of power dependence studies and temperature-dependent lifetime measurements allow us to determine the dominant upconversion mechanisms in Yb³⁺:Ho³⁺ co-doped Y₂BaZnO₅ oxides. The materials presented in this article constitute new and efficient upconversion phosphors which may find utility in a variety of applications.

Original language	English
Pages (from-to)	1387-1394
Number of pages	8
Journal	Journal of Materials Chemistry
Volume	21
Issue number	5
DOIs	https://doi.org/10.1039/c0jm01652g
Publication status	Published - 7 Feb 2011

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title = "Efficient oxide phosphors for light upconversion; Green emission from Yb3+ and Ho3+ co-doped Ln2BaZnO5 (Ln = Y, Gd)",

abstract = "The optical properties of Yb3+ and Ho3+ co-doped Y2BaZnO5, synthesized by solid-state reactions, are investigated in detail. Under 977 nm excitation (∼25 × 10-3 W mm-2), bright green upconversion emission is observed. Concentration dependence studies at room temperature show that relatively high infrared to visible upconversion efficiencies are obtained with values up to ∼2.6%. The results of power dependence studies and temperature-dependent lifetime measurements allow us to determine the dominant upconversion mechanisms in Yb3+:Ho3+ co-doped Y2BaZnO5 oxides. The materials presented in this article constitute new and efficient upconversion phosphors which may find utility in a variety of applications.",

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T1 - Efficient oxide phosphors for light upconversion; Green emission from Yb3+ and Ho3+ co-doped Ln2BaZnO5 (Ln = Y, Gd)

AU - Etchart, Isabelle

AU - Hernández, Ignacio

AU - Huignard, Arnaud

AU - Bérard, Mathieu

AU - Gillin, William P.

AU - Curry, Richard J.

AU - Cheetham, Anthony K.

PY - 2011/2/7

Y1 - 2011/2/7

N2 - The optical properties of Yb3+ and Ho3+ co-doped Y2BaZnO5, synthesized by solid-state reactions, are investigated in detail. Under 977 nm excitation (∼25 × 10-3 W mm-2), bright green upconversion emission is observed. Concentration dependence studies at room temperature show that relatively high infrared to visible upconversion efficiencies are obtained with values up to ∼2.6%. The results of power dependence studies and temperature-dependent lifetime measurements allow us to determine the dominant upconversion mechanisms in Yb3+:Ho3+ co-doped Y2BaZnO5 oxides. The materials presented in this article constitute new and efficient upconversion phosphors which may find utility in a variety of applications.

AB - The optical properties of Yb3+ and Ho3+ co-doped Y2BaZnO5, synthesized by solid-state reactions, are investigated in detail. Under 977 nm excitation (∼25 × 10-3 W mm-2), bright green upconversion emission is observed. Concentration dependence studies at room temperature show that relatively high infrared to visible upconversion efficiencies are obtained with values up to ∼2.6%. The results of power dependence studies and temperature-dependent lifetime measurements allow us to determine the dominant upconversion mechanisms in Yb3+:Ho3+ co-doped Y2BaZnO5 oxides. The materials presented in this article constitute new and efficient upconversion phosphors which may find utility in a variety of applications.

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Efficient oxide phosphors for light upconversion; Green emission from Yb³⁺ and Ho³⁺ co-doped Ln₂BaZnO₅ (Ln = Y, Gd)

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