Takuya Hasegawa Last updated: Jan 10, 2020 at 14:09
Name
Takuya Hasegawa Affiliation
Tohoku University Section
Institute of Multidisciplinary Research for Advanced Materials Center for Exploration of New Inorganic Materials Research funding number
30793690 ORCID ID
0000-0002-6170-5632
Published Papers
New Path for Polyoxometalates: Controlled Synthesis and Characterization of Metal-Substituted Tungstosulfates
Hikaru Hirabaru, Daisuke Kawamoto, Miho Ohnishi, Hiromi Ota, Masahiko Sadakane, Kazumichi Yanagisawa, Takuya Hasegawa, and Tadaharu Ueda
European Journal of Inorganic Chemistry 2020 [Refereed]
Quantitative Determination of the Effective Mn4+ Concentration in a Li2TiO3:Mn4+ Phosphor and Its Effect on the Photoluminescence Efficiency of Deep-red Emission
Takuya Hasegawa, Yoshinori Nishiwaki, Fumito Fujishiro, Shinnosuke Kamei, and Tadaharu Ueda
ACS Omega 4 19856-19862 Nov 2019 [Refereed]
Blue-light-pumped wide-band red emission in a new Ce3+-activated oxide phosphor, BaCa2Y6O12:Ce3+: Melt synthesis and photoluminescence study based on crystallographic analyses
Takuya Hasegawa, Masato Iwaki, Sun Woog Kim, Tadaharu Ueda, Kazuyoshi Uematsu, Kenji Toda and Mineo Sato
Journal of Alloys and Compounds 797 1181-1189 Aug 2019 [Refereed]
Single Crystal Growth and Crystal Structure Analysis of Novel Orange-Red Emission Pure Nitride CaAl2Si4N8:Eu2+ Phosphor
Shota Hasegawa, Takuya Hasegawa, Sun Woog Kim, Ryota Yamanashi, Kazuyoshi Uematsu, Kenji Toda and Mineo Sato
ACS Omega 4(6) 9939-9945 Jun 2019 [Refereed]
Mild condition synthesis without high temperature process of Eu2+-doped barium orthosilicate nanophosphor via Water-Assisted Solid-State Reaction (WASSR) method
Yusuke Shibuta, Takuya Hasegawa, Sun-Woog Kim, Kazuyoshi Uematsu, Kenji Toda and Mineo Sato
Journal of Alloys and Compounds 788 1009-1012 Jun 2019 [Refereed]
Novel green Sr4ScAl3O10:Eu2+ phosphor prepared by the melt quenching technique
Kenji Toda, Masato Iwaki, Minenori Katsu, Shin-nosuke Kamei, Sun-Woog Kim, Takuya Hasegawa, Masaru Muto, Ryota Yamanashi, Tatsuya Sakamoto, Tadashi Ishigaki, Kazuyoshi Uematsu, Mineo Sato and Dae-Ho Yoon
Journal of Ceramic Processing Research 20(3) 276-279 2019 [Refereed]
Blue-yellow multicolor phosphor, Eu2+-activated Li3NaSiO4: Excellent thermal stability and quenching mechanism
Masato Iwaki, Shota Kumagai, Shoma Konishi, Atsuya Koizumi, Takuya Hasegawa, Kazuyoshi Uematsu, Atsushi Itadani, Kenji Toda, Mineo Sato
Journal of Alloys and Compounds 776(5) 1016-1024 2019 [Refereed]
Luminescence enhancement of LiSrPO4:Eu2+ phosphor by Mg2+ ion addition
Shinnosuke Kamei, Tomoki Hatsumori, Takuya Hasegawa, Tadashi Ishigaki, Kazuyoshi Uematsu, Kenji Toda and Mineo Sato
Materials Research Innovations 23(6) 359-362 Sep 2019 [Refereed]
Atsushi TSU-URA, Hirotaka TORII, Takuya HASEGAWA, Dai MURAYAMA, Sun Woog KIM, Kazuyoshi UEMATSU, Kenji TODA, Mineo SATO
Journal of the Ceramic Society of Japan 126(5) 336-340 2018 [Refereed]
Nanophosphors synthesized by the water-assisted solid-state reaction (WASSR) method: Luminescence properties and reaction mechanism of the WASSR method
Sun Woog Kim, Takuya Hasegawa, Mizuki Watanabe, Masaru Muto, Toshiya Terashima, Yusuke Abe, Tatsuro Kaneko, Ayano Toda, Tadashi Ishigaki, Kazuyoshi Uematsu, Kenji Toda, Mineo Sato, Emiko Kawakami, Junko Koide, Masako Toda, Yoshiaki Kudo, Takaki Masaki and Dae Ho Yoon
Applied Spectroscopy Reviews 53(2-4) 177-194 2018 [Refereed]
Structure of triaquatris(1,1,1-trifluoro-4-oxo-pentan-2-olato)cerium(III) as a possible fluorescent compound
A. Koizumi, T. Hasegawa, A. Itadani, K. Toda, T. Zhu and M. Sato
Acta Crystallographica Section E: Crystallographic Communications 74 229-232 2018 [Refereed]
Bluish-White Luminescence in Rare-Earth-Free Vanadate Garnet Phosphors: Structural Characterization of LiCa3MV3O12 (M = Zn and Mg)
Takuya Hasegawa, Yusuke Abe, Atsuya Koizumi, Tadaharu Ueda, Kenji Toda, and Mineo Sato
Inorganic Chemistry 57(2) 857-866 2018 [Refereed]
Synthesis of nano-sized materials using novel water assisted solid state reaction method
Kenji Toda, Tatsuro Kaneko, Takuya Hasegawa, Mizuki Watanabe, Yusuke Abe, Takeshi Kuroi, Mineo Sato, Kazuyoshi Uematsu, Sun Woog Kim, Yoshiaki Kudo, Takaki Masaki, Dae Ho Yoon
Key Engineering Materials 777 163-167 2018 [Refereed]
Sun Woog Kim, Yusuke Abe, Mizuki Watanabe, Takuya Hasegawa, Masaru Muto, Ayano Toda, Tadashi Ishigaki, Kazuyoshi Uematsu, Kenji Toda, Mineo Sato, Emiko Kawakami, Junko Koide, Masako Toda, Yoshiaki Kudo, Toshiyuki Masui, Takaki Masaki, Dae Ho Yoong
Dyes and Pigments 145 339-344 2017 [Refereed]
Stabilization of novel high temperature phase yellow-emitting σ-type (Ba1-x-yEuxMgy)2P2O7 phosphors using a melt synthesis technique
H. Nakagawa, S.W. Kim, T. Hasegawa, S. Hasegawa, T. Ishigaki, K. Uematsu, K. Toda, H. Takaba and M. Sato
Inorganic Chemistry Frontiers 4(9) 1562-1567 2017 [Refereed]
Sun Woog Kim, Go Eun Sim, Ji Young Ock, Jeong Hun Son, Takuya Hasegawa, Kenji Toda, Dong Sik Bae
Dyes and Pigments 139(1) 344-348 2017 [Refereed]
Dai OKADA, Takumi FUGANE, Yuka MATSUMOTO, Takuya HASEGAWA, Atsushi ITADANI, Kazuyoshi UEMATSU, Kenji TODA, Hideki HASHIMOTO, Jun TAKADA, Mineo SATO
Journal of the Ceramic Society of Japan 125(4) 322-325 2017 [Refereed]
Sun Woog Kim, Yu Saito, Takuya Hasegawa, Kenji Toda, Kazuyoshi Uematsu, Mineo Sato
Dyes and Pigments 136(1) 243-247 2017 [Refereed]
A new lanthanum(III) complex containing acetylacetone and 1 H -imidazole
A. Koizumi, T. Hasegawa, A. Itadani, K. Toda, T. Zhu and M. Sato
Acta Crystallographica Section E: Crystallographic Communications 73 1739-1742 2017 [Refereed]
Sun Woog Kim, Takuya Hasegawa, Mizuki Watanabe, Kazuma Sugimoto, Yu, Saito, Kazuyoshi Uematsu, Kenji Toda, Mineo Sato
Dyes and Pigments 136(1) 219-223 2017 [Refereed]
Takuya Hasegawa, Sun Woog Kim, Tadaharu Ueda, Tadashi Ishigaki, Kazuyoshi Uematsu, Hiromitsu Takaba, Kenji Toda and Mineo Sato
Journal of Materials Chemistry C 5(36) 9472-9478 2017 [Refereed]
Luminescence of phosphor balls prepared using melt quenching synthesis method
Takuya Hasegawa, Kenji Toda, Tadashi Ishigaki, Shinnosuke Kamei, Sun Woog Kim, Kazuyoshi Uematsu, Mineo Sato, Msahiro Yoshimura
Materials Science Forum 883 17-21 2017 [Refereed]
Takuya Hasegawa, Sun Woog Kim, Yusuke Abe, Masaru Muto, Mizuki Watanabe, Tatsuro Kaneko, Kazuyoshi Uematsu, Tadashi Ishigaki, Kenji Toda, Mineo Sato, Junko Koide, Masako Toda and Yoshiaki Kudo
RSC Advances 7(40) 25089-25094 2017 [Refereed]
S.W. Kim, T. Hasegawa, M. Muto, A. Toda, T. Kaneko, K. Sugimoto, K. Uematsu, T. Ishigaki, K. Toda, M. Sato, J. Koide, M. Toda and Y. Kudo
New Journal of Chemistry 41(12) 4788-4792 2017 [Refereed]
Development of water assisted solid state reaction for the ceramic materials
Kenji Toda, Sun Woog Kim, Takuya Hasegawa, Mizuki Watanabe, Tatsuro Kaneko, Ayano Toda, Ryota Yamanashi, Shota Kumagai, Masaru Muto, Atsushi Itadani, Mineo Sato, Kazuyoshi Uematsu, Tadashi Ishigaki, Junko Koide, Masako Toda, Emiko Kawakami, Yoshiaki Kudo, Takaki Masaki, Dae Ho Yoon
Key Engineering Materials 751 353-357 2017 [Refereed]
Sun Woog Kim, Takuya Hasegawa, Takeshi Abe, Hiroko Nakagawa, Shota Hasegawa, Kohei Seki, Kenji Toda, Kazuyoshi, Uematsu, Tadashi Ishigaki, Mineo Sato
Ceramics International 42(8) 10389-10392 2016 [Refereed]
Novel yellowish white-emitting Eu2+-activated phosphate phosphor based on Rb2Ba3P4O14
K. Sugimoto, T. Hasegawa, S-W. Kim, K. Uematsu, K. Toda, M. Sato
Journal of Ceramic Processing Research 17(5) 401-404 2016 [Refereed]
M.Sato, S.W.Kim, Y.Shimomura, T.Hasegawa, K.Toda, G.Adachi
Handbook on the Physics and Chemistry of Rare Earths 49 1-128 2016 [Refereed]
S.W. Kim, T. Hasegawa, S. Hasegawa, R. Yamanashi, H. Nakagawa, K. Toda, T. Ishigaki, K. Uematsu and M. Sato
RSC Advances 6(66) 61906-61908 2016 [Refereed]
Takuya Hasegawa, Sun Woog Kim, Takeshi Abe, Shota Kumagai, Ryota Yamanashi, Kohei Seki, Kazuyoshi Uematsu, Kenji Toda, and Mineo Sato
Chemistry Letters 45(9) 1096-1098 2016 [Refereed]
Takuya Hasegawa, Sun Woog Kim, Shinnosuke Kamei, Tadashi Ishigaki, Kazuyoshi Uematsu, Koutoku Ohmi, Kenji Toda and Mineo Sato
Dalton Transactions 45(28) 11554-11559 2016 [Refereed]
Kenji Toda, Sun Woog Kim, Takuya Hasegawa, Mizuki Watanabe, Tatsuro Kaneko, Ayano Toda, Atsushi Itadani, Mineo Sato, Kazuyoshi Uematsu, Tadashi Ishigaki, Junko Koide, Masako Toda, Yoshiaki Kudo, Takaki Masaki, Dae Ho Yoon
Key Engineering Materials 690 268-271 2016 [Refereed]
Takuya HASEGAWA, Natsuki SATO, Sun Woog KIM, Tadashi ISHIGAKI, Kazuyoshi UEMATSU, Kenji TODA, Mineo SATO
Journal of the Ceramic Society of Japan 123(1483) 507-511 2015 [Refereed]
Synthesis of blue-emitting (K1-x Nax )Mg4 (PO4 )3 :Eu2+phosphors
Sun Woog Kim, Takuya Hasegawa, Tadashi Ishigaki, Kazuyoshi Uematsu, Mineo Sato
Journal of Information Display 15(2) 53-57 Apr 2014 [Refereed]
Takuya Hasegawa , Sun Woog Kim, Tadashi Ishigaki, Kazuyoshi Uematsu, Hiromitsu Takaba, Kenji Toda, Mineo Sato
Chemistry Letters 43(6) 828-830 2014 [Refereed]
Sun Woog KIM, Takuya HASEGAWA, Michiyo INOUE, Tadashi ISHIGAKI, Kazuyoshi UEMATSU, Kenji TODA, Mineo SATO
Journal of the Ceramic Society of Japan 122(1426) 452-455 2014 [Refereed]
Synthesis and photoluminescence properties of Mn2+ co-doped white emitting (Sr,Sn)ZnP2O7 phosphor
Sun Woog Kim, Takuya Hasegawa, Hiroyuki Yumoto, Tadashi Ishigaki, Kazuyoshi Uematsu, Kenji Toda and Mineo Sato
Journal of Ceramic Processing Research 15(3) 177-180 2014 [Refereed]
Sun Woog Kim, Takuya Hasegawa, Tadashi Ishigaki, Kazuyoshi, Uematsu, Kenji Toda, Mineo Sato
ECS Solid State Letters 2(12) R49-R51 2013 [Refereed]
Conference Activities & Talks
Quantitative Determination of Effective Mn4+ Concentration and its Influence on Photoluminescence Efficiency of Deep-red emission in Li2TiO3:Mn4+
Takuya Hasegawa, Yoshinori Nishiwaki, Fumito Fujishiro, Shinnosuke Kamei and Tadaharu Ueda
The 13th Pacific Rim Conference of Ceramic Societies (PACRIM13) 28 Oct 2019
Material design concept for red emission generated by 4f 5d transition in oxide crystals
Takuya Hasegawa, Tadaharu Ueda, Kenji Toda, Mineo Sato
15 May 2019
Valence-states of Mn and Luminescence Properties for Red-emitting Li2TiO3:Mn4+ Phosphor Prepared by Sol-gel method
Takuya Hasegawa, Yoshinori Nishiwaki, Fumito Fujishiro, Tadaharu Ueda
The Ceramic Society of Japan Annual Meeting 2019 25 Mar 2019
Discovery and Design-concept for Red-emitting Oxide Phosphor Based on 5d-4f Transition [Invited]
Takuya Hasegawa, Tadaharu Ueda, Kenji Toda, and Mineo Sato
Phosphor Research Society The 375th Meeting 8 Feb 2019
