2018

International Journals

T. Kimoto, H. Niwa, T. Okuda, E. Saito, Y. Zhao, S. Asada, and J. Suda, “Carrier lifetime and breakdown phenomena in SiC power device material”, J. Phys. D: Appl. Phys. 51, 363001/1-21 (2018).

S. Asada, J. Suda, and T. Kimoto, “Determination of Surface Recombination Velocity From Current–Voltage Characteristics in SiC p-n Diodes”, IEEE Trans. on Electron Devices 65, 4786-4791 (2018).

Y. Nishi, H. Sasakura, and T. Kimoto, “Conductance fluctuation in NiO-based resistive switching memory”, J. Appl. Phys., 124, 152134 (2018).

T. Maeda, X. Chi, M. Horita, J. Suda, and T. Kimoto, “Phonon-assisted optical absorption due to Franz-Keldysh effet in 4H-SiC p-n junction diode under high reverse bias voltage”, Appl. Phys. Express 11, 091302 (2018).

S. Asada, J. Suda, and T. Kimoto, “Impacts of Finger Numbers on ON-State Characteristics in Multi-Finger SiC BJTs with Low Base Spreading Resistance”, IEEE Trans. on Electron Devices 65, 2771-2777 (2018).

T. Maeda, T. Narita, M. Kanechika, T. Uesugi, T. Kachi, T. Kimoto, M. Horita, and J. Suda, “Franz-Keldysh effect in GaN p-n junction diode under high reverse bias voltage”, Appl. Phys. Lett. 112, 252104 (2018).

K. Kanegae, M. Horita, T. Kimoto, and J. Suda, “Accurate method for estimating hole trap concentration in n-type GaN via minority carrier transient spectroscopy”, Appl. Phys. Express, 11, 071002 (2018).

S. Asada, J. Suda, and T. Kimoto, “Analytical formula for temperature dependence of resistivity in p-type 4H-SiC with wide-range doping concentrations”, Jpn. J. Appl. Phys. 57, 088002/1-4 (2018).

H. Tanaka, S. Asada, T. Kimoto, and J. Suda, “Theoretical analysis of Hall factor and hole mobility in p-type 4H-SiC considering anisotropic valence band structure”, J. Appl. Phys. 123, 245704 (2018).

K. Kanegae, M. Kaneko, T. Kimoto, M. Horita, and J. Suda, “Characterization of carrier concentration and mobility of GaN bulk substrates by Raman scattering and infrared reflectance spectroscopies”, Jpn. J. Appl. Phys., 57, 070309 (2018).

N. Sawada, T. Narita, M. Kanechika, T. Uesugi, T. Kachi, M. Horita, T. Kimoto, and J. Suda, “Sources of carrier compensation in metalorganic vapor phase epitaxy-grown homoepitaxial n-type GaN layers with various doping concentrations”, Appl. Phys. Exp., 11, 041001 (2018).

M. Kaneko, S. Ueta, M. Horita, T. Kimoto, and J. Suda, “Deep-ultraviolet light emission from 4H-AlN/4H-GaN short-period superlattice grown on 4H-SiC (11-20)”, Appl. Phys. Lett., 112, 012106 (2018).

H. Tanaka, J. Suda, and T. Kimoto, “Impacts of energy relaxation process on quasi-ballistic hole transport capability in germanium and silicon nanowires”, J. Appl. Phys., 123, 024305 (2018).

M. Kaneko and T. Kimoto, “High-Temperature Operation of n- and p-Channel JFETs Fabricated by Ion Implantation Into a High-Purity Semi-Insulating SiC Substrate”, IEEE Electron Device Lett., 39, 723 (2018).

Conference Proceedings

S. Asada, J. Suda, and T. Kimoto, “Effects of Parasitic Region in SiC Bipolar Junction Transistors on Forced Current Gain”, Material Science Forum 924, 629 (2018).

International Presentations

Y. Nishi, H. Sasakura, and T. Kimoto, “Driving Force behind Reset Process in Pt/NiO/Pt Stack Cells”,
14th International Conference on Atomically Controlled Surfaces, Interfaces and Nanostructures (Sendai, Japan, 2018), 22E24.

T. Maeda, T. Narita, H. Ueda, M. Kanechika, T. Uesugi, T. Kachi, T. Kimoto, M. Horita, and J. Suda, “Measurement of Avalanche Multiplication Factor in GaN p-n Junction Diode Using Sub-bandgap Light Absorption Due to Franz-Keldysh Effect”,
2018 International Conference on Solid-State Devices and Materials (Tokyo, Japan, 2018), D-7-02.

X. CHI, H. Niwa, Y. Nishi and T. Kimoto, “Tunneling current in 4H-SiC p-n junctions at high electric field”,
Europ. Conf. on Silicon Carbide and Related Materials 2018 (Birmingham, UK, 2018), MO.P. FP11.

K. Ito, T. Kobayashi, M. Horita, J. Suda, and T. Kimoto, “Modeling of Electron Trapping in SiC MOSFETs Considering Interface-State-Density Distribution Extracted from Gate Characteristics”,
Europ. Conf. on Silicon Carbide and Related Materials 2018 (Birmingham, UK, 2018), MO.P.MI6.

T. Kobayashi, K. Tachiki, K. Ito, Y. Matsushita, T. Kimoto, “Reduction of interface state density in SiC (0001) MOS structures by very-low-oxygen-partial-pressure annealing”,
Europ. Conf. on Silicon Carbide and Related Materials 2018 (Birmingham, UK, 2018), TU.01a.05.

T. Maeda, X. Chi, M. Horita, J. Suda, and T. Kimoto, “Photocurrent induced by Franz-Keldysh effect in a 4H-SiC p-n junction diode under high reverse bias voltage”,
Europ. Conf. on Silicon Carbide and Related Materials 2018 (Birmingham, UK, 2018), TU.02b.2.

S. Asada, J. Suda, T. Kimoto, “Impacts of finger numbers on forced current gain in multi-finger 10 kV-class SiC bipolar junction transistors with reduced base spreading resistance”,
Europ. Conf. on Silicon Carbide and Related Materials 2018 (Birmingham, UK, 2018), Tu.P.BP7.

M. Nakajima, M. Kaneko, and T. Kimoto, “400℃ Operation of Normally-off n- and p-JFETs with a Side-Gate Structure Fabricated by Ion Implantation into a High-Purity Semi-Insulating SiC Substrate”(invited),
Europ. Conf. on Silicon Carbide and Related Materials 2018 (Birmingham, UK, 2018), TH.01.01.

M. Kaneko, U. Grossner, and T. Kimoto, “SiC vertical-channel n- and p-JFETs fully fabricated by ion implantation”,
Europ. Conf. on Silicon Carbide and Related Materials 2018 (Birmingham, UK, 2018), TH.01.02.

S. Yamashita, and T. Kimoto, “Theoretical Analysis of Carrier Lifetimes in SiC by Using Rate Equations”,
Europ. Conf. on Silicon Carbide and Related Materials 2018 (Birmingham, UK, 2018), TH.03.05.

K. Kanegae, M. Horita, T. Kimoto, and J. Suda, “Accurate estimation of H1 trap concentration in n-type GaN layers”,
International Symposium on Growth of Ⅲ-Nitrides (Warsaw, Poland, 2018), Tu4.4

T. Maeda, M. Okada, M. Ueno, Y. Yamamoto, T. Kimoto, M. Horita, and J. Suda, “Temperature dependence of barrier height in Ni/n-GaN Schottky barrier diode consistently obtained by C-V, I-V and IPE measurements”,
Asia-Pacific Workshop on Fundamentals and Applications of Advanced Semiconductor Devices 2018 (Kitakyusyu, Japan, 2018), A7-3

K. Kanegae, M. Horita, T. Kimoto, and J. Suda, “Measurement of H1 trap concentration in MOVPE-grown homoepitaxial n-type GaN by optical isothermal capacitance transient spectroscopy using sub-bandgap photoexcitation”,
Asia-Pacific Workshop on Fundamentals and Applications of Advanced Semiconductor Devices 2018 (Kitakyusyu, Japan, 2018), A7-4

T. Maeda, M. Okada, M. Ueno, Y. Yamamoto, T. Narita, M. Kanechika, T. Uesugi, T. Kachi, T. Kimoto, M. Horita, and J. Suda, “Franz-Keldysh effect in GaN Schottky barrier diodes and p-n junction diodes under high reverse bias voltage”,
60th Electronic Materials Conference (University of California, Santa Barbara, USA, 2018), #B03

Y. Nishi, and T. Kimoto, “Distribution of Forming Characteristics in NiO-Based Resistive Switching Cells with Two Kinds of NiO Crystallinity”,
2018 Mater. Res. Soc. Sympo. Spring Meeting (Phoenix, USA, 2018), EP01.07.03.

R. Matsui, Y. Kuriyama, Y. Nishi, and T. Kimoto, “Resistance Increase by Overcurrent Suppression in Forming Process in Pt/TiO2/Pt Cells”,
2018 Mater. Res. Soc. Sympo. Spring Meeting (Phoenix, USA, 2018), EP01.07.05.