Luminous and tunable white-light upconversion for YAG (Yb3Al5O12) and (Yb;Y)2O3nanopowders

Jiwei Wang; Jianhua Hao; Peter A. Tanner

doi:10.1364/OL.35.003922

Luminous and tunable white-light upconversion for YAG (Yb₃Al₅O₁₂) and (Yb;Y)₂O₃nanopowders

Jiwei Wang, Jianhua Hao, Peter A. Tanner

Research output: Journal article publication › Journal article › Academic research › peer-review

76 Citations (Scopus)

Abstract

We report on multiphoton white-light upconversion in vacuum for Pechini synthesis Yb3Al5O12(YbAG) and combustion synthesis (Yb; Y2)O3nanopowders under IR excitation. Their intense white-light upconversion is attributed to charge transfer luminescence superimposed upon a broadband emission. Unlike common nanoscale phosphors, which show low luminescence efficiency, the intensity of white-light upconversion for nanopowders is similar to that of their bulk counterparts. The luminary efficacy of the upconversion is estimated to be 10-15 lm W-1, and the Commission Internationale d'Eclairage (CIE) coordinates can be widely tuned by the excitation power, pressure, and codoping ratio. The nano-YbAG sample exhibits a longer buildup time for emission, a higher excitation threshold, and a wider CIE range than the oxide nanopowders.

Original language	English
Pages (from-to)	3922-3924
Number of pages	3
Journal	Optics Letters
Volume	35
Issue number	23
DOIs	https://doi.org/10.1364/OL.35.003922
Publication status	Published - 1 Dec 2010

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1364/OL.35.003922

http://hdl.handle.net/10397/2887

Cite this

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abstract = "We report on multiphoton white-light upconversion in vacuum for Pechini synthesis Yb3Al5O12(YbAG) and combustion synthesis (Yb; Y2)O3nanopowders under IR excitation. Their intense white-light upconversion is attributed to charge transfer luminescence superimposed upon a broadband emission. Unlike common nanoscale phosphors, which show low luminescence efficiency, the intensity of white-light upconversion for nanopowders is similar to that of their bulk counterparts. The luminary efficacy of the upconversion is estimated to be 10-15 lm W-1, and the Commission Internationale d'Eclairage (CIE) coordinates can be widely tuned by the excitation power, pressure, and codoping ratio. The nano-YbAG sample exhibits a longer buildup time for emission, a higher excitation threshold, and a wider CIE range than the oxide nanopowders.",

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AU - Tanner, Peter A.

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AB - We report on multiphoton white-light upconversion in vacuum for Pechini synthesis Yb3Al5O12(YbAG) and combustion synthesis (Yb; Y2)O3nanopowders under IR excitation. Their intense white-light upconversion is attributed to charge transfer luminescence superimposed upon a broadband emission. Unlike common nanoscale phosphors, which show low luminescence efficiency, the intensity of white-light upconversion for nanopowders is similar to that of their bulk counterparts. The luminary efficacy of the upconversion is estimated to be 10-15 lm W-1, and the Commission Internationale d'Eclairage (CIE) coordinates can be widely tuned by the excitation power, pressure, and codoping ratio. The nano-YbAG sample exhibits a longer buildup time for emission, a higher excitation threshold, and a wider CIE range than the oxide nanopowders.

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Luminous and tunable white-light upconversion for YAG (Yb₃Al₅O₁₂) and (Yb;Y)₂O₃nanopowders

Abstract

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