Faculty Profiles - OKU Takeo

Papers - OKU Takeo

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Effects of PBr3 addition to polysilane thin films on structures and photovoltaic properties Reviewed International journal

J. Nakagawa, T. Oku, A. Suzuki, T. Akiyama, M. Yamada, S. Fukunishi, K. Kohno

Green and Sustainable Chemistry 7 20 - 34 2017.2

Comparison between SiC- and Si-based inverters for photovoltaic power generation systems Reviewed International journal

19. Y. Ando, Y. Shirahata, T. Oku, T. Matsumoto, Y. Ohishi, M. Yasuda, A. Shimono, Y. Takeda, M. Murozono

Journal of Power and Energy Engineering 5 30 - 40 2017.1

Arsenic and chlorine co-doping to CH3NH3PbI3 perovskite solar cells Reviewed International journal

T. Hamatani, Y. Shirahata, Y. Ohishi, M. Fukaya and T. Oku

Advances in Materials Physics and Chemistry 7 1 - 10 2017.1

Fabrication and characterization of PCBM:P3HT-based thin-film organic solar cells with zinc phthalocyanine and 1,8-diiodooctane Reviewed International journal

H. Maruhashi, T. Oku, A. Suzuki, T. Akiyama and Y. Yamasaki

Chemical and Materials Engineering 5 1 - 7 2017.1

A compact SiC photovoltaic inverter with maximum power point tracking function Reviewed

Ando Y., Oku T., Yasuda M., Shirahata Y., Ushijima K., Murozono M.

Solar Energy 141 228 - 235 2017.1

Language：English Publishing type：Research paper (scientific journal) Publisher：Solar Energy

© 2016 Elsevier Ltd A compact 150 W photovoltaic inverter was developed using SiC devices, which integrated a maximum power point tracking charge controller and a direct current (DC) - alternating current (AC) converter into a single module. The DC-AC converter circuit was built with four SiC metal-oxidesemiconductor field-effect transistors, while the DC-DC converter circuit built with four SiC Schottky barrier diodes. An increase of the switching frequency led to the module of a reduced size (250 × 180 × 28 mm3), which is just one third volume of a commercial Si-based inverter available today. Besides being compact, the conversion efficiency of the DC-AC converter was approximately 3% higher than that of the commercial Si-based inverter. In addition, the MPPT controller showed a conversion efficiency exceeding 96%, which raised the total efficiency under practical operation conditions up to 86%.

DOI： 10.1016/j.solener.2016.11.041

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85000978491&origin=inward

Comparative study of SiC- and Si-based photovoltaic inverters Reviewed International journal

Y. Ando, T. Oku, M. Yasuda, Y. Shirahata, K. Ushijima, and M. Murozono

AIP Conference Proceedings 1807 020020-1 - 020020-1 2017.1

Photovoltaic properties of Cu-doped CH3NH3PbI3 with perovskite structure Reviewed International journal

Y. Shirahata and T. Oku

AIP Conference Proceedings 1807 020008-1 - 020008-6 2017.1

Fabrication and characterization of CH3NH3(Cs)Pb(Sn)I3(Br) perovskite solar cells Reviewed International journal

N. Ueoka, Y. Ohishi, Y. Shirahata, A. Suzuki, and T. Oku

AIP Conference Proceedings 1807 020009-1 - 020009-9 2017.1

Doping effects of transition metal elements to titanium dioxide for perovskite solar cells Reviewed International journal

J. Saito, A. Suzuki, T. Akiyama and T. Oku

AIP Conference Proceedings 1807 020010-1 - 020010-5 2017.1

Effects of halogen doping on the photovoltaic properties of HC(NH2)2PbI3 perovskite solar cells Reviewed International journal

Y. Umemoto, A. Suzuki, and T. Oku

AIP Conference Proceedings 1807 020011-1 - 020011-10 2017.1

Fabrication and characterization of perovskite-based CH3NH3Pb1-xAsxI3+xCly photovoltaic devices Reviewed International journal

T. Hamatani, Y. Shirahata, Y. Ohishi, M. Fukaya, and T. Oku

AIP Conference Proceedings 1807 020012-1 - 020012-9 2017.1

Fabrication and characterization of perovskite photovoltaic devices with TiO2 nanoparticle layers International journal

T. Oku, N. Ueoka, K. Suzuki, A. Suzuki, M. Yamada, H. Sakamoto, S. Minami, S. Fukunishi, K. Kohno, and S. Miyauchi

AIP Conference Proceedings 1807 020014-1 - 020014-7 2017.1

Fabrication and characterization of perovskite based solar cells using phthalocyanine and naphthalocyanine as hole-transporting layer Reviewed International journal

Y. Okada, A. Suzuki, Y. Yamasaki, and T. Oku

AIP Conference Proceedings 1807 020015-1 - 020015-7 2017.1

Fabrication and electrochemical properties of insoluble fullerene-diamine adduct thin-films as buffer layer by alternate immersion process Reviewed International journal

J. Saito, T. Akiyama, A. Suzuki, and T. Oku

AIP Conference Proceedings 1807 020017-1 - 020017-6 2017.1

Microstructures and optical properties of surface and inside of silicon spheres Reviewed International journal

Y. Shirahata, T. Oku, Y. Kanamori, and M. Murozono

AIP Conference Proceedings 1807 020019-1 - 020019-7 2017.1

Effects of SbBr3 addition to CH3NH3PbI3 solar cells Reviewed International journal

T. Oku, Y. Ohishi, and A. Suzuki

AIP Conference Proceedings 1807 020007-1 - 020007-5 2017.1

A compact SiC photovoltaic inverter with maximum power point tracking function Reviewed International journal

Y. Ando, T. Oku, M. Yasuda, Y. Shirahata, K. Ushijima, M. Murozono

Solar Energy 141 228 - 235 2017.1

Characterization and photovoltaic properties of BiFeO3 thin films Reviewed International journal

Y. Shirahata and T. Oku

Coatings 6 68-1 - 68-9 2016.12

Effects of central metal on electronic structure, magnetic properties infrared and Raman spectra of double-decker phthalocyanine Reviewed International journal

A. Suzuki and T. Oku

Applied Surface Science 380 127 - 134 2016.9

Effects of Cl addition to Sb-doped perovskite-type CH3NH3PbI3 photovoltaic devices Reviewed International journal

T. Oku, Y. Ohishi, A. Suzuki and Y. Miyazawa

Metals 6 147-1 - 147-13 2016.6

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