Publications in 2016-2020

• M. Keikhaei and M. Ichimura
  Fabrication of p-type Transparent (CuZn)O Thin Films by the Electrochemical Deposition Method
  Int. J. Electrochem. Sci., Vol. 15, p.156-167 (2020) Jan
  
  
• M. Keikhaei and M. Ichimura
  n-type and p-type semiconducting Cu-doped Mg (OH)2 thin films
  Semicond. Sci. Technol., Vol.35, 035020 (2020) March
  
  
• M. Ichimura
  Impurity Doping in Mg(OH)2 for n-Type and p-Type Conductivity Control
  Materials, Vol.13, 2972 (2020) July
  
  
• M. Keikhaei, M. Tanaka, and M. Ichimura
  Fabrication of Transparent ZnO/(CuZn)O Heterojunction Solar Cells by Electrochemical Deposition
  Mater. Res. Exp., Vol.7, 106411 (2020) Nov.
  
  
• R. Takayanagi and M. Ichimura
  Pulse electrochemical deposition of Cu-doped p-type Fe-O thin films and fabrication of n-Fe-O/p-Fe-O solar cells
  Jpn. J. Appl. Phys. Vol.59, 111002 (2020) Nov.
  
  
• "Nondestructive measurements of depth distribution of carrier lifetimes in 4H-SiC thick epitaxial layers using time-resolved free carrier absorption with intersectional lights",
  Takashi Hirayama, Keisuke Nagaya, Akira Miyasaka, Kazutoshi Kojima, Tomohisa Kato, Hajime Okumura, Masashi Kato,
  Review of Scientific Instruments 91, 123902 (2020); https://doi.org/10.1063/5.0018080
  
  
• "Correlation between structural properties and nonradiative recombination behaviors of threading dislocations in freestanding GaN substrates grown by hydride vapor phase epitaxy"
  Yongzhao Yao, Yoshihiro Sugawara, Daisaku Yokoe, Koji Sato, Yukari Ishikawa, Narihito Okada, Kazuyuki Tadatomo, Masaki Sudo, Masashi Kato, Makoto Miyoshi and Takashi Egawa,
  CrystEngComm 22 (2020) 8299 - 8312., 10.1039/d0ce01344g
  
  
• "Observation of carrier lifetime distribution in 4H-SiC thick epilayers using microscopic time-resolved free carrier absorption system"
  K. Nagaya, T. Hirayama, T. Tawara, K. Murata, H. Tsuchida, A. Miyasaka, K. Kojima, T. Kato, H. Okumura, M. Kato,
  Journal of Applied Physics 128, 105702 (2020); https://doi.org/10.1063/5.0015199.
  
  
• "Mapping of Large Structural Defects in SiC Schottky Contacts Using Internal Photoemission Microscopy"
  Kenji Shiojima, Masashi Kato,
  Materials Science in Semiconductor Processing 118 (2020) 105182. https://doi.org/10.1016/j.mssp.2020.105182
  
  
• "Surface recombination velocities for 4H-SiC: temperature dependence and difference in conductivity type at several crystal faces"
  Masashi Kato, Zhang Xinchi, Kimihiro Kohama, Shuhei Fukaya, Masaya Ichimura,
  Journal of Applied Physics 127, 195702 (2020); doi: 10.1063/5.0007900
  
  
• "Highly efficient 3C-SiC photocathodes with texture structures formed by electrochemical etching"
  Masashi Kato, Tomohiro Ambe,
  Applied Physics Express 13, 026506 (2020). https://doi.org/10.35848/1882-0786/ab6f29
  
  
• M. Ichimura
  On the Possibility of Valence Control of Aluminum Oxide for Electronics Applications
  J. Electron. Mater., Vol.48, pp. 583-588 (2019) Jan
  
  
• M. Umemura and M. Ichimura
  Semiconducting Cu-doped AlOx films fabricated by drop-photochemical deposition
  Mater. Res. Express, Vol.6, 035904 (2019) March
  
  
• W. Ji and M. Ichimura
  Fabrication of photovoltaic FeSxOy/ZnO heterostructures by electrochemical deposition
  Jpn. J. Appl. Phys., Vol.58, 050922 (2019) May
  
  
• M. Keikhaei and M. Ichimura
  Fabrication of Mg(OH)2 Thin Films by Electrochemical Deposition with Cu Catalyst
  Thin Solid Films, Vol. 681, pp. 41-46 (2019) July
  
  
• M. Koyama and M. Ichimura
  Fabrication of ZnO/NiO transparent solar cells by electrochemical deposition
  Jpn. J. Appl. Phys., Vol.58, 128003 (2019) Dec
  
  
• "Heat shock protein 70 is a key molecule to rescue imbalance caused by low-frequency noise"
  Reina Negishi-Oshino, Nobutaka Ohgami, Tingchao He, Xiang Li, Masashi Kato, Masayoshi Kobayashi, Yishuo Gu, Kanako Komuro, Charalampos E. Angelidis, Masashi Kato,
  Archives of Toxicology (2019)
  https://doi.org/10.1007/s00204-019-02587-3
  
  
• "Characterisation of defects in p-type 4H-, 6H- and 3C-SiC epilayers grown on SiC substrates"
  Masashi Kato, Naoto Ichikawa, Yoshitaka Nakano,
  Materials Letters 254 (2019) 96-98.
  https://doi.org/10.1016/j.matlet.2019.07.043
  
  
• "Effects of Nb-doping on Photocatalytic Performance of Rutile TiO₂ Single Crystals"
  Masashi Kato, Hayao Najima, Takaya Ozawa,
  Journal of the Electrochemical Society, 166, H468-H472 (2019).
  doi: 10.1149/2.1231910jes
  
  
• "RECOMBINATION AND DIFFUSION PROCESSES IN ELECTRONIC GRADE 4H SILICON CARBIDE"
  P. Scajev, L. Subacius, K. Jarasiunas, and M. Kato,
  Lithuanian Journal of Physics, Vol. 59, No. 1, pp. 26-34 (2019).
  https://doi.org/10.3952/physics.v59i1.3938
  
  
• "Impact of intrinsic defects on excitation dependent carrier lifetime in thick 4H-SiC studied by complementing microwave photoconductivity, free-carrier absorption and time-resolved photoluminescence techniques"
  Patrik Scajev, Alexander Mazanik, Kestutis Jarasiunas, Liudvikas Suba?ius, Masashi Kato, Olga Korolik, Saulius Miasojedovas,
  Journal of Luminescence 212, 92-98 (2019).
  10.1016/j.jlumin.2019.04.018
  
  
• "Ultraviolet light induced electrical hysteresis effect in graphene-GaN heterojunction"
  Ajinkya K. Ranade, Rakesh D. Mahyavanshi, Pradeep Desai, Masashi Kato, Masaki Tanemura, Golap Kalita,
  Applied Physics Letters 114, 151102 (2019).
  doi: 10.1063/1.5084190
  
  
• "Carrier Lifetime Measurements in Semiconductors through the Microwave Photoconductivity Decay Method"
  Takato Asada, Yoshihito Ichikawa, Masashi Kato,
  Journal of Visualized Experiments (146), e59007 (2019).
  doi:10.3791/59007
  
  
• 解説記事「高耐性セラミックスSiCの新たな応用可能性：人工光合成」
  加藤正史
  セラミックス 第54巻 1月号（2019年） 36-39頁、2019年1月　日本セラミックス協会
  
  
• M. Koyama and M. Ichimura
  "Fast electrochemical deposition of Ni(OH)2 precursor involving water electrolysis for fabrication of NiO thin films"
  Semicond. Sci. Technol., Vol.33, 055011 (2018)
  
  
• M. Keikhaei and M. Ichimura
  "Fabrication of Copper Oxide Thin Films by Galvanostatic Deposition from Weakly Acidic Solutions"
  Int. J. Electrochem. Sci., Vol.13, 9931-9941 (2018)
  
  
• S. Kobayashi and M. Ichimura
  "Electrochemical deposition of Cu-doped p-type iron oxide thin films"
  Semicond. Sci. Technol., Vol.33, 105006 (2018)
  
  
• S. Maki, N. Takeda, and M. Ichimura
  "Fabrication of Pyrite FeS2 Films from Electrochemically Deposited FeOOH by Sulfur Annealing"
  Int. J. Electrochem. Sci., Vol.13, 10829-10836 (2018)
  
  
• 市村、森田（監修　松井）
  「工学系のための応用数学」　森北出版(2018）
  
  
• "Observation of carrier recombination in single Shockley stacking faults and at partial dislocations in 4H-SiC"
  Masashi Kato, Shinya Katahira, Yoshihito Ichikawa, Shunta Harada, and Tsunenobu Kimoto
  Journal of Applied Physics 124, 095702 (2018).
  https://doi.org/10.1063/1.5042561
  
  
• "Passivation of surface recombination at the Si-face of 4H-SiC by acidic solutions"
  Yoshihito Ichikawa, Masaya Ichimura, Tsunenobu Kimoto, Masashi Kato
  the ECS Journal of Solid State Science and Technology 7 (8) Q127-Q130 (2018).
  https://doi.org/10.1149/2.0031808jss
  
  
• "Expansion of Basal Plane Dislocation in 4H-SiC Epitaxial Layer on A-Plane by Electron Beam Irradiation"
  Masaki Sudo, Yukari Ishikawa, Yong Zhao Yao, Yoshihiro Sugawara, Masashi Kato
  Materials Science Forum, Vol. 924, pp. 151-154, 2018.
  https://doi.org/10.4028/www.scientific.net/MSF.924.151
  
  
• "Microscopic FCA System for Depth-Resolved Carrier Lifetime Measurement in SiC"
  Shinichi Mae, Takeshi Tawara, Hidekazu Tsuchida, Masashi Kato
  Materials Science Forum 924 (2018) 269-272.
  https://doi.org/10.4028/www.scientific.net/MSF.924.269
  
  
• "Expansion of a single Shockley stacking fault in a 4H-SiC (11-20) epitaxial layer caused by electron beam irradiation"
  Yukari Ishikawa, Masaki Sudo, Yong-Zhao Yao, Yoshihiro Sugawara, and Masashi Kato
  Journal of Applied Physics 123, 225101 (2018).
  https://doi.org/10.1063/1.5026448
  
  
• "Increased expression level of Hsp70 in the inner ears of mice by exposure to low frequency noise"
  Hiromasa Ninomiya, Nobutaka Ohgami, Reina Oshino, Masashi Kato, Kyoko Ohgami, Xiang Lia, Dandan Shena, Machiko Iidaa, Ichiro Yajima, Charalampos E. Angelidis, Hiroaki Adachi, Masahisa Katsuno, Gen Sobue, Masashi Kato
  Hearing Research, Volume 363, June 2018, Pages 49-54.
  https://doi.org/10.1016/j.heares.2018.02.006
  
  
• "Observations of Inhomogeneity of 3C-SiC Layers Grown on 6H-SiC Substrates Using Scanning Internal Photoemission Microscopy"
  Kenji Shiojima, Naoto Ichikawa, and Masashi Kato
  Japanese Journal of Applied Physics 57, 04FR06 (2018).
  https://doi.org/10.7567/JJAP.57.04FR06
  
  
• A. Supee and M. Ichimura
  Three-step pulse electrochemical deposition of FeSxOy thin films and their characterization
  Materials Research Express, Vol.4, 036410 (2017).
  
  
• S. Sato and M. Ichimura
  Drop-photochemical deposition of aluminum oxide thin films from aqueous solutions
  Materials Research Express, Vol.4, 046405 (2017).
  
  
• (in Japanese) トンバインガルディ、市村
  透明p型半導体NiOの電気化学堆積
  電気学会論文誌A, Vol.137 542-546 (2017).
  
  
• A. Supee and M. Ichimura
  Effects of Complexing Agents on Electrochemical Deposition of FeSxOy in ZnO/FeSxOy Heterostructures
  Applied Physics A, Vol.123, 722 (2017).
  
  
• "Solar Water Splitting Utilizing a SiC Photocathode, a BiVO4 Photoanode, and a Perovskite Solar Cell"
  Akihide Iwase, Akihiko Kudo, Youhei Numata, Masashi Ikegami, Tsutomu Miyasaka, Naoto Ichikawa, Masashi Kato, Hideki Hashimoto, Haruo Inoue, Osamu Ishitani, and Hitoshi Tamiaki,
  ChemSusChem, 2017, 10, 4420-4423.
  
  
• "Effects of thermal aging on Cu nanoparticle/Bi-Sn solder hybrid bonding"
  M. Usui, T. Satoh, H. Kimura, S. Tajima, Y. Hayashi, D. Setoyama, M. Kato,
  Microelectronics Reliability 78, (2017) 93-99.
  https://doi.org/10.1016/j.microrel.2017.07.096
  
  
• "P-Type 3C-SiC Photocathode for Solar to Hydrogen Energy Conversion"
  Masashi Kato
  ECS Transactions 80, 43-55 (2017)
  
  
• "Improved performance of 3C-SiC photocathodes by using a pn junction"
  Naoto Ichikawa, Masaya Ichimura, Masashi Kato,
  International Journal of Hydrogen Energy, 42, 22698 - 22703 (2017)
  http://dx.doi.org/10.1016/j.ijhydene.2017.07.158
  
  
• (in Japanese) 「人はなぜ研究者を続けることができるか」
  加藤正史　応用物理第86巻 第6号 505-506頁
  
  
• "Risk Assessment of Neonatal Exposure to Low Frequency Noise Based on Balance in Mice"
  Nobutaka Ohgami, Reina Oshino, Hiromasa Ninomiya, Xiang Li, Masashi Kato, Ichiro Yajima and Masashi Kato,
  Frontiers in Behavioral Neuroscience, 11:30. doi: 10.3389/fnbeh.2017.00030
  
  
• "Two-dimensional characterization of 3C-SiC layers using scanning internal photoemission microscopy: Mapping of electrical characteristics and crystal quality in domain boundary regions"
  Kenji Shiojima, Masato Shingo, Naoto Ichikawa, and Masashi Kato, Japanese Journal of Applied Physics 56, 04CR06 (2017)
  doi: 10.7567/JJAP.56.04CR06
  
  
• (in Japanese) 解説記事「SiC光陰極による人工光合成」
  加藤正史、ケミカルエンジニヤリング(化学工業社)、62巻 1号 19-23頁、2017年1月
  
  
• S. Kawai, T. Kajima, M. Ichimura,
  "Comparison of amorphous Fe-S-O and crystalline FeS2 pyrite for photovoltaic application"
  Materials Research Express, Vol.3, 025901 (2016).
  
  
• M. Ichimura, T. Kajima, S. Kawai, and K. Mibu
  "Mossbauer study of electrochemically deposited amorphous iron-sulfide-oxide thin films"
  Jpn. J. Appl. Phys., Vol.55, 038006 (2016).
  
  
• J. J. M. Vequizo, M. Yokoyama, M. Ichimura, and A. Yamakata
  "Enhancement of Photoelectrochemical Activity of SnS Photoelectrodes using TiO2, Nb2O5, and Ta2O5 Metal Oxide Layers"
  Appl. Phys. Exp., Vol.9, 067101 (2016).
  
  
• A. Supee and M. Ichimura
  "Effects of Tartaric Acid on Electrochemical Deposition of SnS in ZnO/SnS Heterostructures"
  Trans. Mater. Res. Soc. Jpn., Vol.41, 193-195 (2016).
  
  
• A. Supee and M. Ichimura
  "Effects of complexing agents on electrochemical deposition of FeSxOy thin films"
  Jpn. J. Appl. Phys., Vol.55, 081202 (2016).
  
  
• Bayingaerdi Tong and M. Ichimura
  "Annealing of p-type wide-gap CuxZnyS thin films deposited by the photochemical deposition method"
  Jpn. J. Appl. Phys., Vol.55, 098004 (2016).
  
  
• Bayingaerdi Tong and M. Ichimura
  "Effects of annealing on properties of electrochemically deposited CuxZnyS thin films"
  Trans. Mater. Res. Soc. Jpn., Vol.41, 255-258 (2016).
  
  
• (in Japanese)
  市村正也
  「真空技術のコツ」
  応用物理 Vol.85, No.1, pp.49-52 (2016)
  
  
• (in Japanese)
  市村正也
  「真空度測定のコツ」
  応用物理 Vol.85, No.6, pp.508-511 (2016)
  
  
• Masashi Kato, Keiko Miyake, Tomonari Yasuda, Masaya Ichimura, Tomoaki Hatayama, and Takeshi Ohshima,
  "Spectral response, carrier lifetime, and photocurrents of SiC photocathodes"
  Japanese Journal of Applied Physics, 55, 01AC02 (2016).
  http://dx.doi.org/10.7567/JJAP.55.01AC02
  
  
• Naoto Ichikawa, Masashi Kato, and Masaya Ichimura,
  "The enhanced performance of 3C-SiC photocathodes for the generation of hydrogen through the use of cocatalysts"
  Applied Physics Letters 109, 153904 (2016); doi: 10.1063/1.4964825
  
  
• Masashi Kato,
  "Evaluation of surface recombination of SiC for development of bipolar devices"
  Proc. SPIE 9957, Wide Bandgap Power Devices and Applications 995703-1 - 995703-9 (2016)
  
  
• Masanori Usui, Hidehiko Kimura, Toshikazu Satoh, Takashi Asada, Satoshi Yamaguchi, Masashi Kato,
  "Degradation of a sintered Cu nanoparticle layer studied by synchrotron radiation computed laminography"
  Microelectronics Reliability 63, 152-158 (2016). http://dx.doi.org/10.1016/j.microrel.2016.06.011
  
  
• M. Miyoshi, T. Kabata, T. Tsutsumi, T. Mori, M. Kato, T. Egawa,
  "Improved performance of InGaN/GaN multilayer solar cells with an atomic-layer-deposited Al2O3 passivation film"
  Electronics Letters 52, 1246-1248 (2016). http://dx.doi.org/10.1049/el.2016.1574
  
  
• (in Japanese)
  加藤正史
  「半導体を用いた水素生成技術」
  応用物理85巻 2号 100-104頁(2016)