Hasegawa Takuya

ハセガワタクヤ | Hasegawa Takuya

Affiliation and department：

Research field (2)： Functional solid-state chemistry , Inorganic compounds/materials chemistry

Research keywords (5)：フォトセラミックス , 希土類化合物 , セラミックス , 結晶構造解析 , 蛍光体

Research theme for competitive and other funds (4)：

2022 - 2025 Potential-responsive Luminescence Switching Based on Layer Charge Control in 2D Multiple Oxides
2020 - 2025 Creation and construction of basic technologies of indium-free functional nanomaterials for smart windows
2020 - 2022 Development of Ce(IV) based Charge-neutral Layered Perovskite Nanosheets and Discovery of Its Photo-functionality
2017 - 2020 Discovery of Eu3+-activated red-emitting phosphor using charge-transfer transition of transition metals as blue-light absorber

Papers (85)：

Suzuka Noda, Takuya Hasegawa, Tomoyo Goto, Yasushi Sato, Ayahisa Okawa, Shu Yin. Acquisition of Emissive Single-Crystalline AEu(MoO4)2 (A = Na, K, Rb, and Cs) Double Molybdates by One-Pot Hydrothermal Synthesis: Relationship between Particle Morphology and Photoluminescence Properties. Crystal Growth & Design. 2024
Taisei Hangai, Takuya Hasegawa, Jian Xu, Takayuki Nakanishi, Takashi Takeda, Kosuke Nakano, Kenta Hongo, Ryo Maezono, Tomoyo Goto, Yasushi Sato, et al. Key Role of Metal-to-Metal Charge Transfer Transition between Mo⁶⁺ and Bi³⁺ for Enhancement in NIR Luminescence of Gd₂MoO₆:Bi,Yb Nanophosphor. The Journal of Physical Chemistry C. 2024
Yibei Xue, Lei Miao, Takuya Hasegawa, Ayahisa Okawa, Shunya Yoshino, Hideki Kato, Masato Kakihana, Shu Yin. Uncovering the distinctive phase transition characteristics and thermochromic performance of VO2 with different N-doping sites. Applied Surface Science. 2024. 159779-159779
Takuya Hasegawa, Suzuka Noda, Wataru Hikita, Kenji Toda, Ayahisa Okawa, Shu Yin. Elucidation of Structural Features and Photoluminescence Properties for Hydrothermally-synthesized γ-KEu(MoO₄)₂ Microcrystal Phosphor with Metastable Orthorhombic Structure and Differences of Luminescence Properties by Structure Transition Due to Y³⁺-dilution. New Journal of Chemistry. 2024
Sousuke Yokoyama, Shinya Azuma, Yohei Eguchi, Keisuke Kodani, Takuya Hasegawa, Shuhei Ogo, Hiromi Ota, Si-Xuan Guo, John F. Boas, Jie Zhang, et al. Vanadium-Containing Keggin-Type Polyoxometalates, [VM₁₂O₄₀]^3- and [VVM₁₁O₄₀]^4- (M = Mo, W): Structural Characterization and Voltammetric, NMR, and EPR Studies Related to Electrochemical Reduction at Framework and Central Vanadium Sites. Inorganic Chemistry. 2023. 63. 1. 117-128

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MISC (9)：

長谷川拓哉. セリウム導入層状ペロブスカイトと電荷中性層の創成. セラミックス. 2022. 57. 8. 507-510
殷澍, 長谷川拓哉, 李斌. 液相反応場による環境応答機能性無機材料の合成. 日本電子材料技術協会会報. 2021. 52. 13-21
長谷川拓哉, 殷澍. Mn4+賦活酸化物蛍光体の発光効率向上に向けた新しい材料開発ガイドライン. セラミックス. 2020. 55. 12. 880-884
Hikaru Hirabaru, Daisuke Kawamoto, Miho Ohnishi, Hiromi Ota, Masahiro Sadakane, Kazumichi Yanagisawa, Takuya Hasegawa, Tadaharu Ueda. New Path for Polyoxometalates: Controlled Synthesis and Characterization of Metal-Substituted Tungstosulfates. European Journal of Inorganic Chemistry. 2020
Sun Woog Kim, Takuya Hasegawa, Mizuki Watanabe, Masaru Muto, Toshiya Terashima, Yusuke Abe, Tatsuro Kaneko, Ayano Toda, Tadashi Ishigaki, Kazuyoshi Uematsu, et al. Nanophosphors synthesized by the water-assisted solid-state reaction (WASSR) method: Luminescence properties and reaction mechanism of the WASSR method. Applied Spectroscopy Reviews. 2018. 53. 2-4. 177-194

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Lectures and oral presentations (30)：

Yb3+-Er3+/Tm3+共添加安定化ジルコニアの微粒子合成とアップコンバージョン蛍光温度特性
(日本セラミックス協会2024年年会 2024)
Near-UV pumped near-IR luminescent Gd2MoO6:Yb-Bi nanophosphor
(The 37th International Korea- Japan Seminar on Ceramics 2023)
希土類イオン共添加安定化ジルコニア微粒子のアップコンバージョン蛍光
(第147回無機マテリアル学会学術講演会 2023)
New Tungsten-based Layered perovskites: Structural Analysis and its Electrochromic Behaviour
(International Congress on Pure & Applied Chemistry Bali (ICPAC Bali) 2023 2023)
単粒子解析に基づくNaMg(P,Si)O4:Eu2+蛍光体の構造および蛍光特性評価
(日本セラミックス協会第36回秋季シンポジウム 2023)

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Education (3)：

2014 - 2016 Niigata University Graduate School of Science and Technology
2012 - 2014 Niigata University Graduate School of Science and Technology
2008 - 2012 Niigata University Faculty of Engineering Department of Chemistry and Chemical Engineering

Professional career (1)：

博士(工学) (新潟大学)

Work history (3)：

2022/10 - 現在 Tohoku University Institute of Multidisciplinary Research for Advanced Materials
2019/10 - 2022/09 Tohoku University Institute of Multidisciplinary Research for Advanced Materials Division of Inorganic Material Research
2016/10 - 2019/09 Kochi University

Committee career (5)：

2023/09 - 現在日本セラミックス協会秋季シンポジウムフォトセラミックスセッションオーガナイザー
2023/03 - 現在日本化学会東北支部幹事
2019/05 - 現在映像情報メディア学会情報ディスプレイ研究委員会幹事
2021/03 - 第18回新機能無機物質探索研究センターシンポジウム世話人
2017/05 - 2019/04 映像情報メディア学会情報ディスプレイ研究委員会幹事補佐

Awards (5)：

2023/06 - 日本セラミックス協会第77回日本セラミックス協会進歩賞酸化物をホスト結晶とした新規赤色蛍光体の開発
2018/03 - イムラ・ジャパン第2回イムラ・ジャパン賞植物の生長を促進し,安定供給を実現する無機波長変換材料の開発
2017/01 - 情報ディスプレイ研究会 2016年度 IDY学生奨励賞 Mn4+を発光中心とした赤色蛍光体の合成と蛍光特性評価
2015 - 日本電子材料技術協会日本電子材料技術協会第52回秋期講演大会優秀発表賞アークイメージング炉を用いたガラス蛍光体の合成
2014 - 10. International Symposium for Phosphor Materials and Applications Phosphor Safari 2014 Poster Award Study on the synthesis of novel red-emitting Ce3+ activated oxide phosphors

Association Membership(s) (5)：

日本無機マテリアル学会 , 日本化学会 , 日本希土類学会 , 応用物理学会 , 日本セラミックス協会

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