Green up-conversion emission in Er3+:BaTiO3 sol-gel powders

H. X. Zhang; C. H. Kam; Y. Zhou; S. L. Ng; Y. L. Lam; S. Buddhudu

doi:10.1016/S1386-1425(00)00276-6

Green up-conversion emission in Er³⁺:BaTiO₃ sol-gel powders

H. X. Zhang, C. H. Kam, Y. Zhou, S. L. Ng, Y. L. Lam, S. Buddhudu

Nanyang Technological University

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

17 Citations (Scopus)

Abstract

Bright green emissions at 549 and 526 nm have been observed from sol-gel derived Er³⁺:BaTiO₃ powders upon excitations at two near infrared (NIR) wavelengths of 973 and 816 nm. The decay characteristics were measured and studied. It was found that the predominant emission at 549 nm has very different lifetimes upon excitation at 973 and 816 nm, which was explained by the mechanisms of excited state absorption (ESA) of individual Er³⁺ ion and cooperative energy transfer (CET) between two near Er³⁺ ions for the up-conversion emission. Analysis also showed that 973-nm excitation is more effective for the green up-conversion emission.

Original language	English
Pages (from-to)	2231-2234
Number of pages	4
Journal	Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Volume	56
Issue number	11
DOIs	https://doi.org/10.1016/S1386-1425(00)00276-6
Publication status	Published - Oct 1 2000
Externally published	Yes

ASJC Scopus Subject Areas

Analytical Chemistry
Atomic and Molecular Physics, and Optics
Instrumentation
Spectroscopy

Access to Document

10.1016/S1386-1425(00)00276-6

Cite this

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title = "Green up-conversion emission in Er3+:BaTiO3 sol-gel powders",

abstract = "Bright green emissions at 549 and 526 nm have been observed from sol-gel derived Er3+:BaTiO3 powders upon excitations at two near infrared (NIR) wavelengths of 973 and 816 nm. The decay characteristics were measured and studied. It was found that the predominant emission at 549 nm has very different lifetimes upon excitation at 973 and 816 nm, which was explained by the mechanisms of excited state absorption (ESA) of individual Er3+ ion and cooperative energy transfer (CET) between two near Er3+ ions for the up-conversion emission. Analysis also showed that 973-nm excitation is more effective for the green up-conversion emission.",

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T1 - Green up-conversion emission in Er3+:BaTiO3 sol-gel powders

AU - Zhang, H. X.

AU - Kam, C. H.

AU - Zhou, Y.

AU - Ng, S. L.

AU - Lam, Y. L.

AU - Buddhudu, S.

PY - 2000/10/1

Y1 - 2000/10/1

N2 - Bright green emissions at 549 and 526 nm have been observed from sol-gel derived Er3+:BaTiO3 powders upon excitations at two near infrared (NIR) wavelengths of 973 and 816 nm. The decay characteristics were measured and studied. It was found that the predominant emission at 549 nm has very different lifetimes upon excitation at 973 and 816 nm, which was explained by the mechanisms of excited state absorption (ESA) of individual Er3+ ion and cooperative energy transfer (CET) between two near Er3+ ions for the up-conversion emission. Analysis also showed that 973-nm excitation is more effective for the green up-conversion emission.

AB - Bright green emissions at 549 and 526 nm have been observed from sol-gel derived Er3+:BaTiO3 powders upon excitations at two near infrared (NIR) wavelengths of 973 and 816 nm. The decay characteristics were measured and studied. It was found that the predominant emission at 549 nm has very different lifetimes upon excitation at 973 and 816 nm, which was explained by the mechanisms of excited state absorption (ESA) of individual Er3+ ion and cooperative energy transfer (CET) between two near Er3+ ions for the up-conversion emission. Analysis also showed that 973-nm excitation is more effective for the green up-conversion emission.

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