Visible green upconversion luminescence of Li+/Er3+/Yb3+ co-doped CaWO4 phosphor and effects of Yb3+ concentration

Cho, Hyun (조현); Jung-Il Lee (이정일); Jeong-ho Ryu (류정호)

doi:10.6111/JKCGCT.2013.23.3.142

Visible green upconversion luminescence of Li+/Er3+/Yb3+ co-doped CaWO4 phosphor and effects of Yb3+ concentration

Journal of the Korean Crystal Growth and Crystal Technology
Abbr : J. Korean Cryst. Growth Cryst. Technol.
2013, 23(3), pp.142-145
DOI : 10.6111/JKCGCT.2013.23.3.142
Publisher : The Korea Association Of Crystal Growth, Inc.
Research Area : Engineering > Materials Science and Engineering

Cho, Hyun ¹, Jung-Il Lee ², Jeong-ho Ryu ²

¹부산대학교
²한국교통대학교

Accredited

ABSTRACT

The upconversion (UC) luminescence of Li+/Er3+/Yb3+ co-doped CaWO4 phosphors and effects of Yb3+ concentration are investigated in detail. Single crystallized CaWO4 : Li+/Er3+/Yb3+ phosphor can be obtained, co-doped up to 35.0/5.0/30.0mol% (Li+/Er3+/Yb3+) by solid-state reaction. Under 980 nm excitation, CaWO4 : Li+/Er3+/Yb3+ phosphor exhibited strong green UC emissions visible to the naked eye at 530 and 550 nm induced by the intra 4f transitions of Er3+ (4H11/2, 4S3/2 → 4I15/2). The optimum doping concentrations of Yb3+ that would result in the highest UC luminescence were determined, and a possible UC mechanism that depends on the pumping power is discussed in detail.

KEYWORDS

CaWO4 : Li+/Er3+/Yb3+, Upconversion, Luminescence

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Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Visible green upconversion luminescence of Li+/Er3+/Yb3+ co-doped CaWO4 phosphor and effects of Yb3+ concentration

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* References for papers published after 2023 are currently being built.

Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Visible green upconversion luminescence of Li+/Er3+/Yb3+ co-doped CaWO4 phosphor and effects of Yb3+ concentration

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