Enhanced three-photon near-infrared quantum splitting in β-NaYF4:Ho3+ by codoping Yb3+

D. C. Yu; S. Ye; X. Y. Huang; Q. Y. Zhang

doi:10.1063/1.4718412

AIP Advances (Jun 2012)

Enhanced three-photon near-infrared quantum splitting in β-NaYF4:Ho3+ by codoping Yb3+

D. C. Yu,
S. Ye,
X. Y. Huang,
Q. Y. Zhang

Affiliations

D. C. Yu: State Key Laboratory of Luminescent Materials and Devices, and Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510641, P. R. China
S. Ye: State Key Laboratory of Luminescent Materials and Devices, and Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510641, P. R. China
X. Y. Huang: State Key Laboratory of Luminescent Materials and Devices, and Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510641, P. R. China
Q. Y. Zhang: State Key Laboratory of Luminescent Materials and Devices, and Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510641, P. R. China

DOI: https://doi.org/10.1063/1.4718412
Journal volume & issue: Vol. 2, no. 2
pp. 022124 – 022124-7

Abstract

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An efficient three-step sequential three-photon near-infrared (NIR) quantum splitting (QS), involving the emission of three NIR photons from an absorbed ultraviolet (UV) photon in β-NaYF4:Ho3+, has been demonstrated. Codoping Yb3+ can increase the NIR emissions significantly through the first- and second-step cross-relaxation. The involved mechanisms of three-step NIR QS in Ho3+-Yb3+ have been well demonstrated by the static and dynamic photoluminescence, monitored excitation and time-resolved fluorescence spectra. An internal quantum yield (QY) of 246% for the Yb3+ codoped β-NaYF4:Ho3+ is estimated on the basis of experimental data and theoretical considerations, which is much more than the total QY of 124% for the β-NaYF4:Ho3+ three-photon NIR QS. This research may open up promising new perspectives for designing efficient photonic devices.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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