Influence of co-doping of divalent ions on the photoluminescence intensity of Mn4+ doped CaAl12O19

Umar Zafari; Musashi Sagayama; Mekhrdod Subhoni; Alok M. Srivastava; William W. Beers; William E. Cohen; Chong-Geng Ma; Michal Piasecki; Mikhail G. Brik; Tomoyuki Yamamoto

Optical Materials: X (Oct 2022)

Influence of co-doping of divalent ions on the photoluminescence intensity of Mn4+ doped CaAl12O19

Umar Zafari,
Musashi Sagayama,
Mekhrdod Subhoni,
Alok M. Srivastava,
William W. Beers,
William E. Cohen,
Chong-Geng Ma,
Michal Piasecki,
Mikhail G. Brik,
Tomoyuki Yamamoto

Affiliations

Umar Zafari: Center of Innovative Development of Science and New Technologies, National Academy of Sciences of Tajikistan, Dushanbe, 734025, Tajikistan; Faculty of Science and Technology, Jan Długosz University, Armii Krajowej 13/15, PL-42200, Częstochowa, Poland
Musashi Sagayama: Faculty of Science and Engineering, Waseda University, Tokyo, 169-8555, Japan
Mekhrdod Subhoni: Center of Innovative Development of Science and New Technologies, National Academy of Sciences of Tajikistan, Dushanbe, 734025, Tajikistan; School of Optoelectronic Engineering & CQUPT-BUL Innovation Institute, Chongqing University of Posts and Telecommunications, Chongqing, 400065, People's Republic of China; Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, Tokyo, 169-0051, Japan; Physical Technical Institute, National Academy of Sciences of Tajikistan, 734063, Dushanbe, Tajikistan
Alok M. Srivastava: Current Chemicals, 1099 Ivanhoe Road, Cleveland, OH, 44110, USA
William W. Beers: Current Chemicals, 1099 Ivanhoe Road, Cleveland, OH, 44110, USA
William E. Cohen: Current Chemicals, 1099 Ivanhoe Road, Cleveland, OH, 44110, USA
Chong-Geng Ma: School of Optoelectronic Engineering & CQUPT-BUL Innovation Institute, Chongqing University of Posts and Telecommunications, Chongqing, 400065, People's Republic of China
Michal Piasecki: Faculty of Science and Technology, Jan Długosz University, Armii Krajowej 13/15, PL-42200, Częstochowa, Poland; Inorganic Chemistry Department, Uzhhorod National University, Pidhirna Str. 46, 88000, Uzhhorod, Ukraine
Mikhail G. Brik: Faculty of Science and Technology, Jan Długosz University, Armii Krajowej 13/15, PL-42200, Częstochowa, Poland; School of Optoelectronic Engineering & CQUPT-BUL Innovation Institute, Chongqing University of Posts and Telecommunications, Chongqing, 400065, People's Republic of China; Institute of Physics, University of Tartu, Tartu, 50411, Estonia; Academy of Romanian Scientists, Ilfov Str. No. 3, 050044, Bucharest, Romania
Tomoyuki Yamamoto: Faculty of Science and Engineering, Waseda University, Tokyo, 169-8555, Japan; Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, Tokyo, 169-0051, Japan; Institute of Condensed-Matter Science, Waseda University, Tokyo, 169-8555, Japan; Corresponding author. Faculty of Science and Engineering, Waseda University, Tokyo, 169-8555, Japan.

Journal volume & issue: Vol. 16
p. 100197

Abstract

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Influence of co-dopings of divalent ions such as Mg2+, Zn2+, Cd2+ and Sr2+ ions in Mn4+-doped CaAl12O19 red phosphor on its photoluminescence characteristics has been investigated. Samples of Mn4+-doped CaAl12O19 and co-doped with Mg2+, Zn2+, Cd2+ and Sr2+ ions were synthesized by a solid-state reaction method. Significant enhancement of photoluminescence intensity was observed, when Mg2+ and Zn2+ were co-doped in Mn4+-doped CaAl12O19, while only slight enhancement was seen with Cd2+ and Sr2+ co-dopings. To investigate these differences in photoluminescence enhancement, change in local environment of Mn4+ ions due to co-dopings of divalent ions was examined by electron spin resonance (ESR) measurements and first principles calculations within a density functional theory. From these experimental and theoretical analysis, it has been confirmed that the local environment of Mn4+ changes significantly with Mg2+ and Zn2+ co-dopings, while Cd2+ and Sr2+ alter minimally the local environment of Mn4+ due to different substitution site.

Published in Optical Materials: X

ISSN: 2590-1478 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: https://www.journals.elsevier.com/optical-materials-x

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