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H. Fujisawa · SciRah

Researcher profile · Semantic Scholar

H. Fujisawa

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H. Fujisawa — researcher profile on SciRah

h-index: 11
Works: 36
Citations: 351

Most-cited papers

Development of Ultrahigh-Voltage SiC Devices
K. Fukuda, Dai Okamoto, M. Okamoto, Tadayoshi Deguchi +19 more
2015IEEE Transactions on Electron Devices81 citations
Semantic Scholar
Low Vf and highly reliable 16 kV ultrahigh voltage SiC flip-type n-channel implantation and epitaxial IGBT
Y. Yonezawa, Tomonori Mizushima, Kensuke Takenaka, H. Fujisawa +27 more
20132013 IEEE International Electron Devices Meeting46 citations
Semantic Scholar
Fabrication of a P-Channel SiC-IGBT with High Channel Mobility
S. Katakami, H. Fujisawa, Kensuke Takenaka, H. Ishimori +5 more
201335 citations
Semantic Scholar
Strong impact of slight trench direction misalignment from on deep trench filling epitaxy for SiC super-junction devices
R. Kosugi, S. Ji, K. Mochizuki, H. Kouketsu +5 more
201724 citations Open access
Semantic Scholar
Device Performance and Switching Characteristics of 16 kV Ultrahigh-Voltage SiC Flip-Type n-Channel IE-IGBTs
Y. Yonezawa, Tomonori Mizushima, Kensuke Takenaka, H. Fujisawa +27 more
201522 citations
Semantic Scholar
27.5 kV 4H-SiC PiN diode with space-modulated JTE and carrier injection control
K. Nakayama, Tomonori Mizushima, Kensuke Takenaka, Akihiro Koyama +8 more
2018International Symposium on Power Semiconductor Devices and IC's20 citations
Semantic Scholar
Dynamic characteristics of large current capacity module using 16-kV ultrahigh voltage SiC flip-type n-channel IE-IGBT
Tomonori Mizushima, Kensuke Takenaka, H. Fujisawa, T. Kato +32 more
2014International Symposium on Power Semiconductor Devices and IC's17 citations
Semantic Scholar
Structural properties of CuInSe2 thin films for solar cell applications
T. Hama, T. Ihara, H. Sato, H. Fujisawa +3 more
199117 citations
Semantic Scholar
Origin analysis of expanded stacking faults by applying forward current to 4H-SiC p–i–n diodes
S. Hayashi, T. Naijo, Tamotsu Yamashita, Masaki Miyazato +8 more
201715 citations Open access
Semantic Scholar
Static and dynamic performance evaluation of > 13 kV SiC p-channel IGBTs at high temperatures
Tadayoshi Deguchi, Tomonori Mizushima, H. Fujisawa, Kensuke Takenaka +12 more
2014International Symposium on Power Semiconductor Devices and IC's12 citations
Semantic Scholar
Analysis of Structural Defects in the 4H-SiC Epilayers and their Influence on the Electrical Properties
Syunsuke Izumi, I. Kamata, T. Tawara, H. Fujisawa +1 more
200412 citations Open access
Semantic Scholar
Effect of Current-Spreading Layer Formed by Ion Implantation on the Electrical Properties of High-Voltage 4H-SiC p-Channel IGBTs
Tadayoshi Deguchi, S. Katakami, H. Fujisawa, Kensuke Takenaka +7 more
201411 citations Open access
Semantic Scholar
13-kV, 20-A 4H-SiC PiN Diodes for Power System Applications
Dai Okamoto, Yasunori Tanaka, Tomonori Mizushima, M. Yoshikawa +21 more
20148 citations
Semantic Scholar
Characterization of 4H-SiC Epilayers Grown at a High Deposition Rate
H. Tsuchida, T. Tsuji, I. Kamata, T. Jikimoto +3 more
20018 citations Open access
Semantic Scholar
Analysis of High Leakage Currents in 4H-SiC Schottky Barrier Diodes Using Optical Beam-Induced Current Measurements
T. Tsuji, Syunsuke Izumi, Atsuhisa Ueda, H. Fujisawa +5 more
20026 citations
Semantic Scholar
Electroluminescence Analysis of Al+ and B+ Implanted pn Diodes
H. Fujisawa, T. Tsuji, Syunsuke Izumi, K. Ueno +4 more
20024 citations Open access
Semantic Scholar
Film Deposition Process in Pulse Discharge CVD
T. Yoshida, H. Fujisawa, T. Hokaya, Y. Ichikawa +1 more
19913 citations
Semantic Scholar
Development of ultrahigh voltage SiC power devices
K. Fukuda, Dai Okamoto, S. Harada, Yasunori Tanaka +22 more
20142014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA)2 citations
Semantic Scholar
High Voltage and Fast Switching Reverse Recovery Characteristics of 4H-SiC PiN Diode
K. Nakayama, S. Ogata, Toshihiko Hayashi, T. Hemmi +13 more
20142 citations Open access
Semantic Scholar
Ultrahigh voltage SiC bipolar devices
K. Fukuda, Dai Okamoto, S. Harada, Yasunori Tanaka +22 more
2013IEEE Workshop on Wide Bandgap Power Devices and Applications2 citations
Semantic Scholar
The morphology of grown-in defects in nitrogen-doped silicon crystals
H. Fujimori, H. Fujisawa, Y. Hirano, T. Okabe
20022 citations
Semantic Scholar
Fabrication and Performance of 16-kV Ultrahigh-Voltage SiC Power Devices
Y. Yonezawa, Tomonori Mizushima, Kensuke Takenaka, H. Fujisawa +26 more
20141 citations
Semantic Scholar
High Efficiency Double-Junction Tandem Solar Cells and Their Reliability Tests
T. Yoshida, S. Fujikake, H. Fujisawa, S. Saito +3 more
19911 citations
Semantic Scholar
Structural Properties of CuInSe 2 Thin Films for High Efficiency Solar Cells
H. Fujisawa, T. Ihara, H. Sato, T. Hama +3 more
19911 citations
Semantic Scholar
Crystalline Quality Evaluation of SiC p/n Column Layers Formed by Trench-Filling-Epitaxial Growth
K. Adachi, R. Kosugi, S. Ji, Y. Kawada +5 more
20190 citations
Semantic Scholar
Strong Impact of Slight Misalignment of the Trench Direction from [11-20] on Deep Trench Filling Epitaxy for SiC Super-junction (SJ) Devices
R. Kosugi, S. Ji, K. Mochizuki, H. Kouketsu +6 more
20160 citations
Semantic Scholar
The Characteristics of MOSFETs Fabricated on the Trench Sidewalls of Various Faces Using 4H-SiC (11-20) Substrates
H. Fujisawa, T. Tsuji, M. Nishiura
20060 citations Open access
Semantic Scholar
Suppression of Leakage Current Increase of 4H-SiC Schottky Barrier Diodes during High-Temperature Annealing by "Face-to-Face" Arrangement
Syunsuke Izumi, H. Fujisawa, T. Tawara, K. Ueno +1 more
20030 citations Open access
Semantic Scholar
Fabrication of high-voltage 4H-SiC Schottky barrier diodes using epitaxial layers obtained at a high growth rate
H. Tsuchida, T. Tsuji, H. Fujisawa, I. Kamata +3 more
20020 citations
Semantic Scholar
610 Thermal Stress Cleaving of 3-Dimensional Solid using A Line Heat Source
H. Fujisawa, Y. Imai, A. Saimoto
20000 citations Open access
Semantic Scholar
Nitrogen Effect on the Morphology of Grown-in Defects in Nitrogen Doped Silicon Crystals
H. Fujimori, H. Fujisawa, Y. Hirano, T. Okabe
20000 citations Open access
Semantic Scholar
Fabrication of 3.4kV high voltage n-type 4H-SiC Schottky barrier diodes using thick epitaxial layers
T. Tsuji, H. Fujisawa, Shinji Ogino, H. Tsuchida +3 more
20000 citations
Semantic Scholar
Method and apparatus for manufacturing chalcopyrite type compound thin film
H. Fujisawa, Koki Sato, 広喜佐藤, 広幸藤澤
19920 citations
Semantic Scholar
Properties of CuInSe/sub 2/ films for solar cell applications
K. Urabe, T. Hama, M. Roy, H. Fujisawa +3 more
1991The Conference Record of the Twenty-Second IEEE Photovoltaic Specialists Conference - 19910 citations
Semantic Scholar
PROPERTIES OF CuInSez FILMS FOR SOLAR CELL APPLICATIONS
H. Fujisawa, Y. Ichikawa
19910 citations
Semantic Scholar
Application of a-Si thin film diodes to active matrix LCD
K. Urabe, H. Fujisawa, M. Kamiyama, E. Tanabe +1 more
19890 citations
Semantic Scholar

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