Author

Kouhei Morizuka

Observed names: K. Morizuka, Kouhei MORIZUKA

Observed institutions: Toshiba (Japan), Institute of Industrial Science, The University of Tokyo, The University of Tokyo

OpenAlex ID: A5023568125

Donor Levels in Si-Doped AlGaAs Grown by MBE

1984 · Miyoko Oku Watanabe, Kouhei Morizuka, et al. · Japanese Journal of Applied Physics · 95

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Emitter—Base bandgap grading effects on GaAlAs/GaAs heterojunction bipolar transistor characteristics

1985 · J. Yoshida, M. Kurata, et al. · IEEE Transactions on Electron Devices · 56

LPMOCVD growth of C doped GaAs layers and AlGaAs/GaAs heterojunction bipolar transistors

1991 · Yasuo Ashizawa, Takao Noda, et al. · Journal of Crystal Growth · 54

Transit-time reduction in AlGaAs/GaAs HBTs utilizing velocity overshoot in the p-type collector region

1988 · K. Morizuka, R. Katoh, et al. · IEEE Electron Device Letters · 37

AlGaAs/GaAs HBTs fabricated by a self-alignment technology using polyimide for electrode separation

1988 · K. Morizuka, M. Asaka, et al. · IEEE Electron Device Letters · 32

Collector-top GaAs/AlGaAs heterojunction bipolar transistors for high-speed digital ICs

1986 · K. Morizuka, T. Nozu, et al. · Electronics Letters · 23

AlGaAs/GaAs HBT receiver ICs for a 10 Gbps optical communication system

2002 · J. Akagi, Y. Kuriyama, et al. · Technical digest -- IEEE Compound Semiconductor Integrated Circuit Symposium · 22

Electron space-charge effects on high-frequency performance of AlGaAs/GaAs HBTs under high-current-density operation

1988 · K. Morizuka, R. Katoh, et al. · IEEE Electron Device Letters · 20

Precise extraction of emitter resistance from an improved floating collector measurement

1995 · K. Morizuka, O. Hidaka, et al. · IEEE Transactions on Electron Devices · 11

15 GBPS MUX/DMUX implemented with AlGaAs/GaAs HBTs

2003 · Y. Kuriyama, K. Morizuka, et al. · Technical digest -- IEEE Compound Semiconductor Integrated Circuit Symposium · 10

Ultrahigh-speed heterojunction bipolar transistor multiplexer/demultiplexer ICs

1991 · Y. Kuriyama, K. Morizuka, et al. · IEEE Journal of Solid-State Circuits · 6

Transit time reduction in AlGaAs/GaAs HBTs with p-type collector

1988 · K. Morizuka, R. Katoh, et al. · IEEE Transactions on Electron Devices · 4

IIIA-1 a self-aligned emitter-base contact technique for AlGaAs/GaAs heterojunction bipolar transistors

1986 · K. Morizuka, K. Tsuda, et al. · IEEE Transactions on Electron Devices · 4

A new method for evaluation of surface recombination in heterojunction bipolar transistors by magnetotransport

1999 · Tetsuro Nozu, Tohru Sugiyama, et al. · Solid-State Electronics · 3

Planar GaAlAs/GaAs Heterojunction Bipolar Transistors

1984 · K. Morizuka, M. Obara, et al. · International Conference on Solid State Devices and Materials (SSDM) · 3

Application of Electron Beam-Acoustic Microscope to Semiconductors

1982 · Kouhei Morizuka, Yoshio Adachi, et al. · Japanese Journal of Applied Physics · 3

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9.5 GHz bandwidth HBT gain controllable amplifier IC with an amplitude detection circuit

1990 · H. Yamakawa, H. Ibe, et al. · Electronics Letters · 2

10 Gbit/s AlGaAs/GaAs heterojunction bipolar transistor decision circuit IC

1990 · J. Akagi, Y. Kuriyama, et al. · Electronics Letters · 2

Self-Aligned AlGaAs/GaAs HBTs and 35 ps LCML Ring Oscillators Fabricated by Mg and P Double Implantation

1986 · K. Morizuka, M. Asaka, et al. · International Conference on Solid State Devices and Materials (SSDM) · 2

VA-3 emitter-base bandgap grading effects on GaAlAs/GaAs heterojunction bipolar transistors

1984 · J. Yoshida, M. Kurata, et al. · IEEE Transactions on Electron Devices · 2

AlGaAs/GaAs HBTs: an ultra sensitive decision circuit for a 10 Gbps optical communication system

2002 · K. Tsuda, J. Akagi, et al. · IEEE Bipolar/BiCMOS Circuits and Technology Meeting (BCTM) · 1

Thermal Runaway Tolerance in Double-Heterojunction Bipolar Transistors

1995 · Osamu Hidaka, Kouhei Morizuka, et al. · Japanese Journal of Applied Physics · 1

Current Mode Logic Ring Oscillators Using AlGaAs/GaAs Heterojunction Bipolar Transistors

1985 · J. Yoshida, K. Morizuka, et al. · International Conference on Solid State Devices and Materials (SSDM) · 1

Novel low-cost process for 0.1-μm T-shaped gate of InGaP/InGaAs pseudomorphic hemt

2005 · M. Sugiura, K. Morizuka · Technical digest -- IEEE Compound Semiconductor Integrated Circuit Symposium

Direct observation of gain collapse phenomena in multi-finger HBTs using digital cameras

2002 · Toru Sugiyama, Yorito Kakiuchi, et al.

Works count: 28

Citation count: 394

H-index: 10

I10-index: 10