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ジョ ユージン
退職
2018年3月退職
  • 論文・発表

[研究論文] |[書籍] |[会議録] |[口頭発表] |[特許]

研究論文 TSV

2017
  1. Benjamin Dierre, Karine Costuas, Noée Dumait, Serge Paofai, Maria Amela-Cortes, Yann Molard, Fabien Grasset, Yujin Cho, Kohsei Takahashi, Naoki Ohashi, Tetsuo Uchikoshi, Stéphane Cordier. Mo6 cluster-based compounds for energy conversion applications: comparative study of photoluminescence and cathodoluminescence. Science and Technology of Advanced Materials. 18 [1] (2017) 458-466 10.1080/14686996.2017.1338496
  2. Hui-Bing Xu, Wei-Dong Zhuang, Le Wang, Rong-Hui Liu, Yuan-Hong Liu, Li-Hong Liu, Yujin Cho, Naoto Hirosaki, Rong-Jun Xie. Synthesis and Photoluminescence Properties of a Blue-Emitting La3Si8N11O4:Eu2+ Phosphor. Inorganic Chemistry. 56 [22] (2017) 14170-14177 10.1021/acs.inorgchem.7b02310
  3. Liang-Jun Yin, Benjamin Dierre, Takashi Sekiguchi, J. van Ommen, Hubertus Hintzen, Yujin Cho. Transition of Emission Colours as a Consequence of Heat-Treatment of Carbon Coated Ce3+-Doped YAG Phosphors. Materials. 10 [10] (2017) 1180 10.3390/ma10101180
  4. Liwen Sang, Bing Ren, Masatomo Sumiya, Meiyong Liao, Yasuo Koide, Atsushi Tanaka, Yujin Cho, Yoshitomo Harada, Toshihide Nabatame, Takashi Sekiguchi, Shigeyoshi Usami, Yoshio Honda, Hiroshi Amano. Initial leakage current paths in the vertical-type GaN-on-GaN Schottky barrier diodes. Applied Physics Letters. 111 [12] (2017) 122102 10.1063/1.4994627
  5. Haipeng Ji, Yujin Cho, Le Wang, Naoto Hirosaki, Maxim S. Molokeev, Zhaohui Huang, Rong-Jun Xie. Phase formation of (Y,Ce) 2 BaAl 4 SiO 12 yellow microcrystal-glass phosphor for blue LED pumped white lighting. Ceramics International. 43 [8] (2017) 6425-6429 10.1016/j.ceramint.2017.02.055
2016
  1. Shengping Wang, Shuang Xie, Guowei Huang, Hongxuan Guo, Yujin Cho, Jun Chen, Daisuke Fujita, Mingsheng Xu. Grassy Silica Nanoribbons and Strong Blue Luminescence. Scientific Reports. 6 [1] (2016) 10.1038/srep34231
  2. Yujin Cho, Benjamin Dierre, Takashi Sekiguchi, Takayuki Suehiro, Kohsei Takahashi, Takashi Takeda, Rong-Jun Xie, Yoshinobu Yamamoto, Naoto Hirosaki. Low-energy Cathodoluminescence for (Oxy)Nitride Phosphors. Journal of Visualized Experiments. [117] (2016) 10.3791/54249
  3. Yujin Cho, Takashi Sekiguchi, Takashi Kimura, Hideo Iwai. Imaging and spectroscopy of secondary electrons from AlN and β-SiAlON ceramics using fountain detector. Superlattices and Microstructures. 99 (2016) 41-44 10.1016/j.spmi.2016.03.019
  4. Haipeng Ji, Le Wang, Yujin Cho, Naoto Hirosaki, Maxim S. Molokeev, Zhiguo Xia, Zhaohui Huang, Rong-Jun Xie. New Y2BaAl4SiO12:Ce3+ yellow microcrystal-glass powder phosphor with high thermal emission stability. Journal of Materials Chemistry C. 4 [41] (2016) 9872-9878 10.1039/c6tc03422e
  5. Shuxing Li, Qiangqiang Zhu, Le Wang, Daiming Tang, Yujin Cho, Xuejian Liu, Naoto Hirosaki, Toshiyuki Nishimura, Takashi Sekiguchi, Zhengren Huang, Rong-Jun Xie. CaAlSiN3:Eu2+ translucent ceramic: a promising robust and efficient red color converter for solid state laser displays and lighting. Journal of Materials Chemistry C. 4 [35] (2016) 8197-8205 10.1039/c6tc02518h
  6. Stelian ARJOCA, Encarnación G. VÍLLORA, Daisuke INOMATA, Yusuke ARAI, Yujin CHO, Takashi SEKIGUCHI, Kiyoshi SHIMAMURA. High homogeneity, thermal stability and external quantum efficiency of Ce:YAG single-crystal powder phosphors for white LEDs. Journal of the Ceramic Society of Japan. 124 [5] (2016) 574-578 10.2109/jcersj2.15303
  7. Chenning Zhang, Tetsuo Uchikoshi, Rong-Jun Xie, Lihong Liu, Yujin Cho, Yoshio Sakka, Naoto Hirosaki, Takashi Sekiguchi. Prevention of thermal- and moisture-induced degradation of the photoluminescence properties of the Sr2Si5N8:Eu2+ red phosphor by thermal post-treatment in N2–H2. Physical Chemistry Chemical Physics. 18 [18] (2016) 12494-12504 10.1039/c6cp01102k
  8. Yujin Cho, Benjamin Dierre, Naoki Fukata, Naoto Hirosaki, Kazuhiro Marumoto, Donghyun Son, Kohsei Takahashi, Takashi Takeda, Takashi Sekiguchi. Defects and luminescence control of AlN ceramic by Si-doping. Scripta Materialia. 110 (2016) 109-112 10.1016/j.scriptamat.2015.08.013
2015
  1. Chen Ning Zhang, Tetsuo Uchikoshi, Li Hong Liu, Benjamin Dierre, Yu Jin Cho, Yoshio Sakka, Naoto Hirosaki, Takashi Sekiguchi. Textured Beta-Sialon:Eu<sup>2+</sup> Phosphor Deposits Fabricated by Electrophoretic Deposition (EPD) Process within a Strong Magnetic Field: Preparation Process and Photoluminescence (PL) Properties Depending on Orientation. Key Engineering Materials. 654 (2015) 268-273 10.4028/www.scientific.net/kem.654.268
  2. Chenning Zhang, Tetsuo Uchikoshi, Rong-Jun Xie, Lihong Liu, Yujin Cho, Yoshio Sakka, Naoto Hirosaki, Takashi Sekiguchi. Reduced thermal degradation of the red-emitting Sr2Si5N8:Eu2+ phosphor via thermal treatment in nitrogen. Journal of Materials Chemistry C. 3 [29] (2015) 7642-7651 10.1039/c5tc01575h
  3. Lihong Liu, Le Wang, Chenning Zhang, Yujin Cho, Benjamin Dierre, Naoto Hirosaki, Takashi Sekiguchi, Rong-Jun Xie. Strong Energy-Transfer-Induced Enhancement of Luminescence Efficiency of Eu2+- and Mn2+-Codoped Gamma-AlON for Near-UV-LED-Pumped Solid State Lighting. Inorganic Chemistry. 54 [11] (2015) 5556-5565 10.1021/acs.inorgchem.5b00683
  4. Kohsei Takahashi, Benjamin Dierre, Yujin Cho, Takashi Sekiguchi, Rong-Jun Xie, Naoto Hirosaki. Microanalysis of Calcium Codoped LaAl(Si6−zAlz)(N10−zOz) (z~1): Ce3+Blue Phosphor. Journal of the American Ceramic Society. 98 [4] (2015) 1253-1258 10.1111/jace.13470
  5. Jie Zhu, Le Wang, Tianliang Zhou, Yujin Cho, Takayuki Suehiro, Takashi Takeda, Ming Lu, Takashi Sekiguchi, Naoto Hirosaki, Rong-Jun Xie. Moisture-induced degradation and its mechanism of (Sr,Ca)AlSiN3:Eu2+, a red-color-converter for solid state lighting. Journal of Materials Chemistry C. 3 [13] (2015) 3181-3188 10.1039/c4tc02824d

書籍 TSV

口頭発表 TSV

2017
  1. CHO, Yujin, YAO, Yuanzhao, LUO, Xianjia, KIMURA, Takashi, SEKIGUCHI, Takashi. Cathodoluminescence properties of pn junctions in GaN using oblique cutting methods. Defects-Recognition, Imaging and Physics in Semiconductors. 2017
  2. SEKIGUCHI, Takashi, KIMURA, Takashi, LUO, Xianjia, CHO, Yujin, MITSUISHI, Kazutaka, OHKUBO, Tadakatsu, UZUHASHI, Jun, HONO, Kazuhiro, Masaharu Edo, Shinya Takashima. Atom Probe and Cathodoluminescence study of Mg implanted layers in GaN. DRIP XVII (Defects-Recognition, Imaging and Physics in Semicondu. 2017
  3. CHEN, Jun, YI, Wei, CHO, Yujin, NABATAME, Toshihide, SEKIGUCHI, Takashi, CHIKYOW, Toyohiro. Investigation of GaN MIS Interfaces by Electron-beam-induced Current. The 17th conference on Defects-Recognition, Imaging and Physics . 2017
  4. 解 栄軍, 李 淑星, ジョ ユージン, 武田 隆史, 廣崎 尚登. YAG/Al2O3復合セラミックス発光材料の合成と発光特性. 第78回応用物理学会秋季学術講演会 . 2017
  5. CHO, Yujin, Benjamin Dierre, TAKEDA, Takashi, XIE, Rong-Jun, HIROSAKI, Naoto, SEKIGUCHI, Takashi. Advanced Cathodoluminescence techniques for Single fluorescent particles Analysis. Joint Symposium on Electronic Materials. 2017
  6. CHO, Yujin, LUO, Xianjia, KIMURA, Takashi, SEKIGUCHI, Takashi. Cathodoluminescence study of pn junctions and heterointefaces in GaN . Collaborative Conference on Materials Research (CCMR) 2017. 2017
  7. 関口 隆史, 木村 隆, 羅 顕佳, ジョ ユージン. 斜め研磨を用いたGaN材料の断面カソードルミネッセンス観察. 日本顕微鏡学会第73回学術講演会. 2017
  8. 武田 隆史, 解 栄軍, ジョ ユージン, 高橋 向星, 関口 隆史, 小山 幸典, 廣崎 尚登. 不純物制御したBNからの近紫外線発光(I)合成と発光特性. 第64回応用物理学会春季学術講演会. 2017
2015
  1. CHO, Yujin, DIERRE, Benjamin, TAKAHASHI, Kohsei, TAKEDA, Takashi, FUKATA, Naoki, HIROSAKI, Naoto, SEKIGUCHI, Takashi. Improvement of luminescence properties and particle growth of AlN phosphors by Si-doping. ECS 228th Meeting. 2015
  2. XIE, Rong-Jun, Chunyun Wang, TAKEDA, Takashi, CHO, Yujin, SUEHIRO, Takayuki, HIROSAKI, Naoto. Thermal Degradation of Nitride Phosphors. 228th ECS Meeting. 2015
  3. ジョ ユージン, 湯 代明, ディエール バンジャマン, 高橋 向星, 廣崎 尚登, 関口 隆史. TEM and CL analysis of Si-doped AlN powders. The 76th JSAP Autumn meeting. 2015
  4. CHO, Yujin, DIERRE, Benjamin, TAKAHASHI, Kohsei, FUKATA, Naoki, TAKEDA, Takashi, HIROSAKI, Naoto, SEKIGUCHI, Takashi. What about doping Si into AlN powder?. Joint Symposium on Electronic Materials 2015 (JSEM2015). 2015
  5. CHO, Yujin, TAKAHASHI, Kohsei, DIERRE, Benjamin, TAKEDA, Takashi, HIROSAKI, Naoto, SEKIGUCHI, Takashi. A comparison between GPS and HIP methods for Si-doped AlN powders synthesis. Phosphor safari 2015. 2015
  6. CHO, Yujin, DIERRE, Benjamin, TAKAHASHI, Kohsei, FUKATA, Naoki, HIROSAKI, Naoto, SEKIGUCHI, Takashi. Enhancement of particle growth and luminescence of AlN by Si-doping. INC11. 2015
  7. ジョ ユージン, 高橋 向星, ディエール バンジャマン, 解 栄軍, 廣崎 尚登, 関口 隆史. Microscopic approach for optimizing the growth conditions of LaAl(Si6-zAlz)(N10-zOz)(z~1):Ce3+ blue phosphor . The 62nd JSAP spring meeting. 2015
  8. 高橋 向星, ジョ ユージン, 武田 隆史, 舟橋 司朗, 解 栄軍, 関口 隆史, 廣崎 尚登, 高橋向星. 粉末合成したA3B8X12型新緑色窒化物蛍光体のカソードルミネッセンス観察. 2015年 第62回応用物理学会春季学術講演会. 2015

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