| Enhancing upconverted white light in Tm<sup>3+</sup>/Yb<sup>3+</sup>/Ho<sup>3+</sup>-doped GdVO<sub>4</sub> nanocrystals via incorporation of Li<sup>+</sup> ions. | |
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MedLine Citation:
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PMID: 22274334 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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The white light emission of Tm<sup>3+</sup>/Yb<sup>3+</sup>/Ho<sup>3+</sup>-doped GdVO<sub>4</sub> nanocrystals, following excitation with near-infrared light (λ<sub>exc</sub> = 980 nm), via a multiphoton upconversion process is presented. Upconverted blue emission from the Tm<sup>3+</sup> ions as well as green/red emissions from the Ho<sup>3+</sup> ions contributes to the observed white light. The calculated Commission internationale de l'éclairage (CIE) color coordinates were calculated to be x = 0.34; y = 0.32 and lie at the center of the white region. Furthermore, the intensity of the upconverted white light was enhanced by the incorporation of monovalent Li<sup>+</sup> ions into the GdVO<sub>4</sub> matrix. An explanation for this enhancement is proposed based on X-ray diffraction and fluorescence lifetime measurements. |
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Authors:
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Venkataramanan Mahalingam; Rafik Naccache; Fiorenzo Vetrone; John A Capobianco |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Optics express Volume: 20 ISSN: 1094-4087 ISO Abbreviation: Opt Express Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-01-25 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101137103 Medline TA: Opt Express Country: United States |
Other Details:
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Languages: eng Pagination: 111-9 Citation Subset: IM |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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