Investigation of the up-conversion properties of Er–Yb-doped calcium tantalates with various Ca/Ta ratios

Sayaka Tamura; Michio Iwaoka; Yasushi Sato; Makoto Kobayashi; Masato Kakihana; Koji Tomita

doi:10.2494/photopolymer.30.507

Investigation of the up-conversion properties of Er–Yb-doped calcium tantalates with various Ca/Ta ratios

Sayaka Tamura, Michio Iwaoka, Yasushi Sato, Makoto Kobayashi, Masato Kakihana, Koji Tomita

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

5 Citations (Scopus)

Abstract

Er³⁺/Yb³⁺ co-doped calcium tantalate up-conversion (UC) phosphors were synthesized via a parallel synthesis scheme using the gelable citrate complex method. Samples with various Ca/Ta atomic ratios were prepared, and their UC emission properties were compared. Under 980-nm near-infrared laser excitation, α-Ca₂Ta₂O₇: Er³⁺, Yb³⁺ showed an extremely weak UC emission intensity and CaTa₄O₁₁: Er³⁺, Yb³⁺ demonstrated an excellent UC emission intensity. In addition, the local symmetry around the rare-earth dopant ions affected the UC luminescence properties.

Original language	English
Pages (from-to)	507-512
Number of pages	6
Journal	Journal of Photopolymer Science and Technology
Volume	30
Issue number	4
DOIs	https://doi.org/10.2494/photopolymer.30.507
Publication status	Published - 2017

Keywords

CaTaO
Calcium tantalate
Rare-earth
Up-conversion phosphor

ASJC Scopus subject areas

Polymers and Plastics
Organic Chemistry
Materials Chemistry

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10.2494/photopolymer.30.507

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title = "Investigation of the up-conversion properties of Er–Yb-doped calcium tantalates with various Ca/Ta ratios",

abstract = "Er3+/Yb3+ co-doped calcium tantalate up-conversion (UC) phosphors were synthesized via a parallel synthesis scheme using the gelable citrate complex method. Samples with various Ca/Ta atomic ratios were prepared, and their UC emission properties were compared. Under 980-nm near-infrared laser excitation, α-Ca2Ta2O7: Er3+, Yb3+ showed an extremely weak UC emission intensity and CaTa4O11: Er3+, Yb3+ demonstrated an excellent UC emission intensity. In addition, the local symmetry around the rare-earth dopant ions affected the UC luminescence properties.",

keywords = "CaTaO, Calcium tantalate, Rare-earth, Up-conversion phosphor",

author = "Sayaka Tamura and Michio Iwaoka and Yasushi Sato and Makoto Kobayashi and Masato Kakihana and Koji Tomita",

year = "2017",

doi = "10.2494/photopolymer.30.507",

language = "English",

volume = "30",

pages = "507--512",

journal = "Journal of Photopolymer Science and Technology",

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TY - JOUR

T1 - Investigation of the up-conversion properties of Er–Yb-doped calcium tantalates with various Ca/Ta ratios

AU - Tamura, Sayaka

AU - Iwaoka, Michio

AU - Sato, Yasushi

AU - Kobayashi, Makoto

AU - Kakihana, Masato

AU - Tomita, Koji

PY - 2017

Y1 - 2017

N2 - Er3+/Yb3+ co-doped calcium tantalate up-conversion (UC) phosphors were synthesized via a parallel synthesis scheme using the gelable citrate complex method. Samples with various Ca/Ta atomic ratios were prepared, and their UC emission properties were compared. Under 980-nm near-infrared laser excitation, α-Ca2Ta2O7: Er3+, Yb3+ showed an extremely weak UC emission intensity and CaTa4O11: Er3+, Yb3+ demonstrated an excellent UC emission intensity. In addition, the local symmetry around the rare-earth dopant ions affected the UC luminescence properties.

AB - Er3+/Yb3+ co-doped calcium tantalate up-conversion (UC) phosphors were synthesized via a parallel synthesis scheme using the gelable citrate complex method. Samples with various Ca/Ta atomic ratios were prepared, and their UC emission properties were compared. Under 980-nm near-infrared laser excitation, α-Ca2Ta2O7: Er3+, Yb3+ showed an extremely weak UC emission intensity and CaTa4O11: Er3+, Yb3+ demonstrated an excellent UC emission intensity. In addition, the local symmetry around the rare-earth dopant ions affected the UC luminescence properties.

KW - CaTaO

KW - Calcium tantalate

KW - Rare-earth

KW - Up-conversion phosphor

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DO - 10.2494/photopolymer.30.507

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JO - Journal of Photopolymer Science and Technology

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Investigation of the up-conversion properties of Er–Yb-doped calcium tantalates with various Ca/Ta ratios

Abstract

Keywords

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