Absorption Spectra, Defect Site Distribution and Upconversion Excitation Spectra of CaF2/SrF2/BaF2:Yb3+:Er3+ Nanoparticles

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Title

Absorption Spectra, Defect Site Distribution and Upconversion Excitation Spectra of CaF2/SrF2/BaF2:Yb3+:Er3+ Nanoparticles

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University of Canterbury Library

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UC Research Repository

Description

© 2020 Elsevier B.V. We report studies of the Yb3+ site distribution in Er3+ co-doped upconverting alkaline earth fluoride nanoparticles using high-resolution absorption measurements. It is found that Yb3+ single ion cubic (Oh) sites and preferentially formed clusters are the dominant centres for moderate dopant concentrations. At higher concentrations, and for larger particle sizes, a minority C4v(F−) centre is also observed. Furthermore, the behaviour of Yb3+ cluster centres, whose primary ...

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Format

Research paper

Research format

Journal article

Date created

2020

Creator

Balabhadra S / Reid, Michael / Golovko, Vladimir / Wells, Jon-Paul

URL

https://hdl.handle.net/10092/102031

Related subjects

nanoparticles / absorption / cubic site / cluster centres / upconversion and excitation dynamics / Chemical sciences / Analytical chemistry / Analytical spectrometry / Theoretical and computational chemistry / Theoretical quantum chemistry

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