KONAGAI MAKOTO

J-GLOBAL         Last updated: Oct 22, 2019 at 16:36
 
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Name
KONAGAI MAKOTO
Affiliation
Tokyo City University
Section
Advanced Research Laboratories
Degree
Doctor of Engineering

Research Interests

 
 

Research Areas

 
 

Academic & Professional Experience

 
Apr 2015
 - 
Today
Tokyo City University
 
 
   
 
Professor,Others,Others,Director, Tokyo Institute of Technology Graduate School of Science and Engineering, Department of Physical Electronics, Graduate School of Science and Engineering Physical Electronics
 
1977
   
 
-:
 
1981
   
 
-:
 
1991
   
 
-:
 

Education

 
 
 - 
1977
Graduate School, Division of Science and Engineering, Tokyo Institute of Technology
 

Awards & Honors

 
2002
Pioneers Award, World Renewable Energy Network
 
2005
Best Paper Award
 
2001
PVSEC-12 Best Paper Award
 
2006
Plaque of Appreciation
 
2009
Best Poster Award
 

Published Papers

 
High‑Performance Amorphous Silicon Thin Film Solar Cells Prepared at 100 °C: Toward Flexible Building‑Integrated Photovoltaics
Dong‑Won Kang, Jun Ryu, and Makoto Konagai
Electronic Materials Letters      Jun 2019   [Refereed]
Theoretical studies of silicon hetero-junction solar cells with rib structure
Yukimi Ichikawa,Yoshiaki Osawa, Hiroshi Noge, and MakotoKonagai,
AIP Advances   9 065117   Jun 2019   [Refereed]
INDOOR AND OUTDOOR PERFORMANCE MEASUREMENT OF InGaP//Si SPECTRUM SPLITTING SOLAR CELLS
Satomi Takahashi, Tomoya Kubota, Masatoshi Kumada and Makoto Konagai
Proc.of Grand Renewable Energy 2018   -(-) ---   Mar 2019   [Refereed]
High voltage bifacial amorphous Si quintuple-junction solar cells for IoT devices
Makoto Konagai and Ryo Sasaki
Japanese Journal of Applied Physics   58 SBBF05   Feb 2019   [Refereed][Invited]
Fundamental Study of Si/SiO2 Quantum Well Structure for Wide Bandgap Si Solar Cells
Yukimi Ichikawa, Masakazu Hirai, and Makoto Konagai
2018 IEEE 7th World Conference on Photovoltaic Energy Conversion,   -(-) ---   Nov 2018   [Refereed]
Structural, Optical and Electrical Characterization of Heterojunction Rib-Si Solar Cells
Makoto Konagai, Rei Kondo, Toshiki Otani, Satomi Takahashi, Kentarou Sawano, Yukimi Ichikawa, Kazuyoshi Nakada and Yasuyoshi Kurokawa
2018 IEEE 7th World Conference on Photovoltaic Energy Conversion,   -(-) ---   Nov 2018   [Refereed]
Characterization of Heterojunction Rib-Si Solar Cells by EL and DLIT Imaging
Makoto Konagai, Rei Kondo, Yukimi Ichikawa, and Yasuaki Ishikawa
EUPVSEC Proceedings   -(-) 262-265   2018   [Refereed]
Peeling process of thin-film solar cells using graphene layers
Ryousuke Ishikawa, Yasuyoshi Kurokawa, Shinsuke Miyajima and Makoto Konagai
Applied Physics Express   10(8) 082301   Jul 2017   [Refereed]
Effects of epitaxial growth on the optimum condition of intrinsic amorphous silicon oxide buffer layers for silicon heterojunction solar cells
He Zhang, Kazuyoshi Nakada, Makoto Konagai
Thin Solid Films   628 214-220   Apr 2017   [Refereed]
Influence of Fabrication Processes and Annealing Treatment on the Minority Carrier Lifetime of Silicon Nanowire Films
Shinya Kato, Tatsuya Yamazaki, Yasuyoshi Kurokawa, Shinsuke Miyajima and Makoto Konagai
Nanoscale Research Letters   12(242)    Mar 2017   [Refereed]
Wide-bandgap P-type Microcrystalline Silicon Oxycarbide Using Additional Trimethylboron for Silicon Heterojunction Solar Cells
Dong-Won Kang, Porponth Sichanugrist, He Zhang and Makoto Konagai
Progress in Photovoltaics: Research and Applications   25 384-389   Feb 2017   [Refereed]
“Single crystalline silicon solar cells with rib structure
Shuhei Yoshiba, Masakazu Hirai, Yusuke Abe, Makoto Konagai, and Yukimi Ichikawa
7(2) 025104   Feb 2017   [Refereed]
Preparation of axial-type wire-structure crystalline silicon solar cells
Yusuke Shirayanagi, Yasutoshi Yashiki, Shinya Kato, and Makoto Konagai
Japanese Journal of Applied Physics   56(8S2) 08MA09   2017   [Refereed]
Fabrication of Two-Dimensional Quantum Well Structure Consisting of Vertical Si Nano-Wall Arrays
Yukimi Ichikawa, Shuhei Yoshiba, Masakazu Hirai and Makoto Konagai
Journal of The Electrochemical Society   164(6) H293-H298   2017   [Refereed]
Daiji Kanematsu, Shuhei Yoshiba, Masakazu Hirai, Akira Terakawa, Makoto Tanaka, Yukimi Ichikawa, Shinsuke Miyajima and Makoto Konagai
Nanoscale Research Letters   11 530   Nov 2016   [Refereed]
Performance improvement of amorphous silicon solar cell by SiOx:H based multiple antireflection coatings
Amartya Chowdhury, Dong-Won Kang, Porponth Sichanugrist, Makoto Konagai
Thin Solid Films   616(11) 530   Oct 2016   [Refereed]
Fabrication of Si/SiO2 Superlattice Microwire Array Solar Cells Using Microsphere Lithography
Shigeru Yamada, Shinsuke Miyajima, and Makoto Konagai
Journal of Nanomaterials   2016 9245159   Sep 2016   [Refereed]
Progress in a-SiOx:H Thin Film Solar Cells with Patterned MgF2 Dielectric for Top Cell of Multi-Junction System
Dong-Won Kang, Porponth Sichanugrist, and Makoto Konagai
Electron. Mater. Lett.,   12(4) 451-455   Jul 2016   [Refereed]
Development of Wide Band Gap P-a-SiOxCy:H Using Additional Trimethylboron as Carbon Source Gas
Dong-Won Kang, Porponth Sichanugrist, Bancha Janthong, Muhammad Ajmal Khan, Chisato Niikura, and Makoto Konagai,
Electron. Mater. Lett.   12(4) 462-467   Jul 2016   [Refereed]
InGaP//GaAs//CIGS 3-junction spectrum-splitting solar cells with low concentration
Dong-Won Kang, Yuki Takiguchi, Porponth Sichanugrist, Makoto Konagai
Physica Status Solidi A   213(6) 1535-1540   Jun 2016   [Refereed]
High efficiency p-i-n superstrate amorphous Si solar cells on SiOx periodic arrays of 3D microstructureprepared by soft-imprinting
Chisato Niikura, AmartyaChowdhury,Bancha Janthong, PorponthSichanugrist, and Makoto Konagai
Applied Physics Express   9 042301   Mar 2016   [Refereed]
Triple Layer Antireflection Design Concept for the Front Side of c-Si Heterojunction Solar Cell Based on the Antireflective Effect of nc-3C-SiC:H Emitter Layer
Erick Omondi Ateto, Makoto Konagai, and Shinsuke Miyajima
International Journal of Photoenergy   2016 5282851   Feb 2016   [Refereed]
On the potential of light trapping in multi scale textured thin film solar cells
A.Tamang, A.Hongsingthong, P.Sichanugrist, V.Jovanov, H.T.Gebrewold, M. Konagai, D.Knipp
Solar Energy Materials & Solar Cells   144 300-308   Jan 2016   [Refereed]
Investigation of crystallinity and planar defects in the Si nanowires grown by vapor–liquid–solid mode using indium catalyst for solar cell applications
Muhammad Ajmal Khan, Yasuaki Ishikawa, Ippei Kita, Ayumi Tani, Hiroshi Yano,
Japanese Journal of Applied Physics   55 01AE03   2016   [Refereed]
Dong-Won Kang, Yuki Takiguchi, Porponth Sichanugrist and Makoto Konagai,
PROGRESS IN PHOTOVOLTAICS: RESEARCH AND APPLICATIONS      2016   [Refereed]
Effect of annealing atmosphere on the electrical and optical properties of sol–gel derived Al doped Zn1 − xMgxO thin film
Lei Meng , Makoto Konagai, Shinsuke Miyajima
Thin Solid Films   597 144-150   Dec 2015   [Refereed]
Effective light trapping by modulated quantum structures for Si nanowire/wall solar cells
Daiji Kanematsu, Shigeo Yata, Akira Terakawa, Makoto Tanaka and Makoto Konagai
Journal of Applied Physics   54(10) 102301   Oct 2015   [Refereed]
Effect of textured glass substrates coated with LPCVD-deposited SnO2:F on amorphous silicon solar cells
Amartya Chowdhury, Dong-Won Kang, Masanobu Isshiki, Takuji Oyama, Hidefumi Odaka, Porponth Sichanugrist, Makoto Konagai
Solar Energy Materials and Solar Cells   140 126-133   Sep 2015   [Refereed]
High-performance a-Si1–xOx:H/c-Si heterojunction solar cells realized by the a-Si:H/a-Si1–xOx:H stack buffer layer
He Zhang, Kazuyoshi Nakada, Shinsuke Miyajima, and Makoto Konagai,
physica status solidi (RRL) - Rapid Research Letters   9(4) 225-229   Apr 2015   [Refereed]
Graphene transparent electrode for thin-film solar cells
Ryousuke Ishikawa, Yasuyoshi Kurokawa, Shinsuke Miyajima and Makoto Konagai,
physica status solidi (c)   201400320   Apr 2015   [Refereed]
Selective growth of vertical silicon nanowire array guided by anodic aluminum oxide template
Van Hoang Nguyen, Yusuke Hoshi, Noritaka Usami and Makoto Konagai
Japanese Journal of Applied Physics   54(9) 095003   2015   [Refereed]
Characterization of laser transferred contact through aluminum oxide passivation layer
Shunsuke Urabe, Junpei Irikawa, Makoto Konagai and Shinsuke Miyajima
Japanese Journal of Applied Physics   54 08KD02   2015   [Refereed]
Effect of Al doping concentration on the electrical and optical properties of sol–gel derived Zn0.87Mg0.13O thin film
Lei Meng, Shinsuke Miyajima, and Makoto Konagai
Japanese Journal of Applied Physics   54 08KB09   2015   [Refereed]
Low-temperature-processed a-SiOx:H/a-Si:H tandem cells for full spectrum solar cells
Dong-Won Kang, Porponth Sichanugrist, Shinsuke Miyajima, and Makoto Konagai
Japanese Journal of Applied Physics   54 08KB02   2015   [Refereed]
Highly transparent Zn1-xMgxO/ITO multilayer for window of thin film solar cells
Dong-Won Kang, Amartya Chowdhury, Porponth Sichanugrist, Yusuke Abe,
Current Applied Physics   15 1022-1026   2015   [Refereed]
Light management of a-SiOx:H thin film solar cells with hydrogen-reduced p+ buffer at TiO2/p-layer interface
Dong-Won Kang, Amartya Chowdhury, Porponth Sichanugrist, Makoto Konagai
Solar Energy Materials & Solar Cells   143 296-301   2015   [Refereed]
Electrical characterization of hydrogenated amorphous silicon oxide films
Takashi Itoh, Ryuichi Katayama, Koki Yamakawa, Kento Matsui, Masaru Saito, Shuhichiroh Sugiyama, Porponth Sichanugrist, Shuichi Nonomura, and Makoto Konagai
Japanese Journal of Applied Physics   54 08KB11   2015   [Refereed]
Photovoltaic properties of axial-junction silicon nanowire solar cells with integrated arrays
Daiji Kanematsu, Shigeo Yata, Akira Terakawa, Makoto Tanaka, and Makoto Konagai
Japanese Journal of Applied Physics   54 08KA09   2015   [Refereed]
Control of verticality and (111) orientation of In-catalyzed silicon nanowires grown in the vapour–liquid–solid mode for nanoscale device applications
M. Ajmal Khan, Y. Ishikawa, I. Kita, K. Fukunaga, T. Fuyuki and M. Konagai
Journal of Materials Chemistry C   3 11577-11580   2015   [Refereed]
Silicon heterojunction solar cells with high surface passivation quality realized using amorphous silicon oxide films with epitaxial phase
Kazuyoshi Nakada, Junpei Irikawa, Shinsuke Miyajima, and Makoto Konagai
Japanese Journal of Applied Physics   54 052303   2015   [Refereed]
Kazuyoshi Nakada, Shinsuke Miyajima, and Makoto Konagai
Jpn.J.Appl.Phys.   54 082301   2015   [Refereed]
Silicon quantum dot superlattice solar cell structure including silicon nanocrystals in a photogeneration layer
Shigeru Yamada, Yasuyoshi Kurokawa, Shinsuke YMiyajima, Makoto Konagai
Silicon quantum dot superlattice solar cell structure including silicon nanocrystals in a photogeneration layer   9 246   2014   [Refereed]
Amorphous silicon oxide passivation films for silicon heterojunction solar cells
Kazuyoshi Nakada, Shinsuke Miyajima, and Makoto Konagai
Japanese Journal of Applied Physics   53 04ER13   2014   [Refereed]
Novel application of MgF2 as a back reflector in a-SiOx:H thin-film solar cells
Dong-Won Kang, Porponth Sichanugrist, and Makoto Konagai
Applied Physics Express   7 082302   2014   [Refereed]
Development of Double-Textured ZnO:B Substrates for Improving Microcrystalline Silicon Solar Cell Performance
Yusuke Abe, Taijiro Kagei, Porponth Sichanugrist, and Makoto Konagai
IEEE JOURNAL OF PHOTOVOLTAICS   4(6) 1374-1379   2014   [Refereed]
New method to measure whole-wavelength transmittance of TCO
Masanobu Isshiki, Porponth Sichanugrist, Yusuke Abe, Takuji Oyama, Hidefumi Odaka, Makoto Konagai
Current Applied Physics   14 1813-1818   2014   [Refereed]
Solid-phase crystallization of amorphous silicon nanowire array and optical properties
Ryousuke Ishikawa, Shinya Kato, TatsuyaYamazaki, et al.
Jpn. J.Appl.Phys.   53 02BE09   2014   [Refereed]
Light-Trapping and Interface Morphologies of Amorphous Silicon Solar Cells on Multiscale Surface Textured Substrates
Asman Tamang , Aswin Hongsingthong, Porponth Sichanugrist, Vladislav Jovanov, Makoto Konagai, Dietmar Knipp
IEEE Journal of Photovoltaics   4 16-21   2014   [Refereed]
Improved Light Trapping Effect for Thin-Film Silicon Solar Cells fabricated on doubled-textured white glass substrate
Hidetoshi Wada, Bancha Janthong, Porponth Sichanugrist, Makoto Konagai
Canadian Journal of Physics   92 920-923   2014   [Refereed]
High Performance Solar Cell on SnO2/ZnO Multilayer TCO Substrate for Full Spectrum Splitting Solar Cell Application
Sinae Kim, Porponth Sichanugrist, Makoto Konagai
Canadian Journal of Physics   92 917-919   2014   [Refereed]

Misc

 
H.Ishihara T.Watahiki A.Yamada M.Konagai
Thin Solid Films   508(1-2) 329-332   2006
H.Ishihara M.Murano T.Watahiki Y.Nakamura A.Yamada M.Konagai
Thin Solid Films   508(1-2) 99-102   2006
Annealing characteristics of Al-doped hydrogenated microcrystalline cubic silicon carbide films
S.Miyajima A.Yamada M.Konagai
Materials Research Society Proceedings   862    2005
Y.Yashiki S.Miyajima A.Yamada M.Konagai
Thin Solid Films   501(1-2) 202-205   2005
S.Miyajima A.Yamada M.Konagai
Thin Solid Films   501(1-2) 186-189   2005

Books etc

 
Thin-Films Solar Cells
Springer   2004   

Conference Activities & Talks

 
Recent Progress of Rib Si Solar Cell Technology and Its Application to InGaP//Si Spectrum Splitting Solar Cell [Invited]
KONAGAI MAKOTO
29th International Photovoltaic Science and Engineering Conf. (PVSEC-29)   13 Nov 2019   
Rib Silicon Heterojunction Solar Cells with Textured Surfaces
Tsukasa Takamura,Ryuto Iwata, Yukimi Ichikawa, Kimihiko Saito and Makoto Konagai
29th International Photovoltaic Science and Engineering Conf. (PVSEC-29)   8 Nov 2019   
Development of Fabrication Process for Nano-wall Si Solar Cells
Yukimi Ichikawa, Masakazu Hirai, and Makoto Konagai
29th International Photovoltaic Science and Engineering Conf. (PVSEC-29)   7 Nov 2019   
Optimization of Textured Substrate for Silicon Heterojunction Passivated by a-SiOx:H Thin Film
Kimihiko Saito, Tsukasa Takamura, Yukimi Ichikawa and Makoto Konagai
29th International Photovoltaic Science and Engineering Conf. (PVSEC-29)   4 Nov 2019   
Amorphous Si Quintuple-Junction Solar Cells on Graphene Layer for IoT Applications
Ryousuke Ishikawa, Momoka Yonemura, Ryo Sasaki, and Makoto Konagai
29th International Photovoltaic Science and Engineering Conf. (PVSEC-29)   4 Nov 2019   
Minutely Outdoor Measurements of Bifacial Gains of Silicon Heterojunction Solar Cells as a Function of Diffuse Irradiance in Tokyo
Hiroshi Noge and Makoto Konagai
29th International Photovoltaic Science and Engineering Conf. (PVSEC-29)   4 Nov 2019   
Si-Based Heterojunction Solar Cells Passivated by a-SiOx:H Thin Film
Kimihiko Saito, Tsukasa Takamura, Yukimi Ichikawa and Makoto Konagai
36th European Photovoltaic Solar Energy Conference and Exhibition   9 Sep 2019   
Comparison of the Outdoor Performance of Cylindrical and Rectangular-Parallelepiped PV Modules
Hiroshi. Noge, Makoto Konagai, Taizo Masuda, and Akinori Sato
36th European Photovoltaic Solar Energy Conference and Exhibition   9 Sep 2019   
Development of Very Thin Rib Structure Si Hetero-junction Solar Cells
Yukimi Ichikawa, Yoshiaki Osawa, Hiroshi Noge and Makoto Konagai
36th European Photovoltaic Solar Energy Conference and Exhibition   9 Sep 2019   
Bifacial Amorphous Si Quintuple-Junction Solar Cells for IoT Devices with High Open-Circuit Voltage of 3.5V under Low Illuminance
Makoto Konagai and Ryo Sasaki
36th European Photovoltaic Solar Energy Conference and Exhibition   9 Sep 2019   
Bifacial Amorphous Si Quintuple-Junction Solar Cells for Application to IoT
Ryo Sasaki, Makoto Konagai
The 7th Korea-Japan Joint Seminar on PV   15 Nov 2018   
Device Simulation of Thin Silicon Solar Cells with Rib Structure
Yoshiaki Osawa, Yukimi Ichikawa, Hiroshi Noge, Makoto Konagai
The 7th Korea-Japan Joint Seminar on PV   15 Nov 2018   
Electroluminescence Characteristics of Si Heterojunction Solar Cells
Rei Kondo, Yukimi Ichikawa, Kentarou Sawano and Makoto Konagai
The 7th Korea-Japan Joint Seminar on PV   15 Nov 2018   
Recent Advances in Developing Rib-Si Solar Cells
Makoto Konagai
The 7th Korea-Japan Joint Seminar on PV   15 Nov 2018   
Characterization of Heterojunction Rib-Si Solar Cells by EL and DLIT Imaging
Makoto Konagai, Rei Kondo, Yukimi Ichikawa, and Yasuaki Ishikawa
35th European Photovoltaic Solar Energy Conference and Exhibition   24 Sep 2018   
High Voltage Bifacial Amorphous Si Quintuple-Junction Solar Cells for IoT Devices
M. Konagai, R. Sasaki
SSDM2018   9 Sep 2018   
Fundamental Study of Si/SiO2 Quantum Well Structure for Wide Bandgap Si Solar Cells
Yukimi Ichikawa, Masakazu Hirai, and Makoto Konagai
WCPEC-7   10 Jun 2018   
Structural, Optical and Electrical Characterization of Heterojunction Rib-Si Solar Cells
Makoto Konagai, Rei Kondo, Toshiki Otani, Satomi Takahashi, Kentarou Sawano, Yukimi Ichikawa, Kazuyoshi Nakada and Yasuyoshi Kurokawa
WCPEC-7   10 Jun 2018   
INDOOR AND OUTDOOR PERFORMANCE MEASUREMENT OF InGaP//Si SPECTRUM SPLITTING SOLAR CELLS
Satomi Takahashi, Tomoya Kubota, Masatoshi Kumada and Makoto Konagai
RE2018   2018   
OUTDOOR POWER GENERATION CHARACTERISTICS OF
Satomi Takahashi and Makoto Konagai
PVSEC-27   12 Nov 2017   
THIN CRYSTALLINE SILICON SOLAR CELLS WITH RIB STRUCTURE
Toshitaka Otani, Satomi Takahashi, Kazuyoshi Nakada, Masakazu Hirai,
PVSEC-27   12 Nov 2017   
PHOTOLUMINESCENCE AND ELECTROLUMINESCENCE CHARACTERISTICS FROM Si AND Ge HETEROJUNCTION SOLAR CELLS
Makoto Konagai, Rei Kondo, Kentarou Sawano and Yukimi Ichikawa
PVSEC-27   12 Nov 2017   
Present status and future prospects of solar cell technology development in Japan-Focusing on next generation solar cells [Invited]
Makoto Konagai
International Workshop for Next-generation solar cells & 2017 International Talents Sub-forum for Photoelectronics   14 Jul 2017   
Characteristics of Thin Crystalline Silicon Solar Cells with Rib Structure
Yukimi Ichikawa, Shuhei Yoshiba, Masakazu Hirai, and Makoto Konagai
IEEE PVSC-44   25 Jun 2017   
Consideration on open-circuit voltage of Si heterojunction solar cells under low concentration condition
M. Konagai
IEEE PVSC-44   25 Jun 2017   
Looking back on the innovative solar cell development for 45 years [Invited]
Makoto Konagai
FESTKOLLOQUIM   6 Apr 2017   
Major Research Accomplishment in 5 Years of FUTURE -PV Innovation Projec [Invited]
KONAGAI MAKOTO
26th International Photovoltaic Science and Engineering Conf.(PVSEC-26)   24 Nov 2016   
Properties of Silicon Nano-Walls for Wide Bandgap Solar Cells
Yukimi Ichikawa, Masakazu Hirai, Shuhei Yoshiba and Makoto Konagai
26th International Photovoltaic Science and Engineering Conf.   24 Oct 2016   
Development of high quality p-c-SiOxCy:H using additional Trimethylboron as carbon source gas
Porponth Sichanugrist, He Zhang and Makoto Konagai
26th International Photovoltaic Science and Engineering Conf.   24 Oct 2016   
Preparation of axial type wire-structure crystalline silicon solar cells
Y. Shirayanagi, Y. Yashiki, S. Kato and M. Konagai
26th International Photovoltaic Science and Engineering Conf.   24 Oct 2016   
Device Simulation and Experimental Approaches of Silicon Heterojunction
Ryosuke Sato, Tomoya Kubota, Kentarou Sawano, Porponth Sichanugrist, He Zhang, Kazuyoshi Nakada, Makoto Konagai
26th International Photovoltaic Science and Engineering Conf.   24 Oct 2016   
Development of High-efficiency Low-concentrator Spectrum-Splitting Type Solar Cells
P. Sichanugrist , Dong-Won Kang , Y. Takiguchi , C. Niikura and M. Konagai
32nd European Photovoltaic Solar Energy Conference and Exhibition   20 Jun 2016   
High Quality P-a-SiOxCy:H films Using Additional Trimethylboron for Amorphous Silicon based Top Cells
Dong-Won Kang, Porponth Sichanugrist, Muhammad Ajmal Khan, Chisato Niikura, and Makoto Konagai
32nd European Photovoltaic Solar Energy Conference and Exhibition   20 Jun 2016   
Measurement of the Density of States in a Si Nanowall Exhibiting the Quantum Size Effect
Daiji Kanematsu, Shuhei Yoshiba, Masakazu Hirai, Akira Terakawa, Makoto Tanaka, Yukimi Ichikawa, Shinsuke Miyajima, and Makoto Konagai
5 Jun 2016   
Fabrication of Silicon Nano-wall for Bandgap Control Quantum Size Effect
Shuhei Yoshiba, Masakazu Hirai, Yukimi Ichikawa, and Makoto Konagai
43rd IEEE-PVSC   5 Jun 2016   
Silicon heterojunction solar cells incorporating a-Si1-xOx:H passivation layer with different thicknesses under μc-Si1-xOx:H emitter
He Zhang, Kazuyoshi Nakada, Makoto Konagai
19 May 2016   
Optical Absorption Spectra in Amorphous Silicon Oxide Thin Film Solar Cells by Fourier Transform Photocurrent Spectroscopy
A.R. Nur Syazwana, T. Itoh, K. Matsui, K. Yamakawa, M. Saito, S.Sugiyama, P. Sichanugrist,S. Nonomura and M. Konagai
ISPlasma2016   6 Mar 2016   
Present Status of METI/NEDO and MEXT/JST Photovoltaic Research & Development [Invited]
M. Konagai
12th Workshop on the Future Direction of Photovoltaics   28 Jan 2016   
Progress in a-SiOx:H Thin Film Solar Cells for Top Cell of Multi-junction System
Dong-Won Kang, Porponth Sichanugrist, Makoto Konagai
25th international Photovoltaic Science and Engineering Conference and Exhibition   16 Nov 2015   
The Effect of diameter on radial type wire‐structure crystalline silicon solar cells
Yasutoshi Yashiki, Yuusuke Shirayanagi,Tomohiro Hakamata, Makoto Konagai
25th international Photovoltaic Science and Engineering Conference and Exhibition   16 Nov 2015   
Development of high quality p-a-SiOxCy:H using additional Trimethylboron (TMB)
P. Sichanugrist, B. Janthong, C. Niikura, and M. Konagai
25th international Photovoltaic Science and Engineering Conference and Exhibition   16 Nov 2015   
Outdoor characterization of spectral-splitting low concentrating PV system for InGaP solar cell and GaAs solar cell
Y.Masuda, Y.Ueda, T.Okamoto, S.Miyajima and M.Konagai
25th international Photovoltaic Science and Engineering Conference and Exhibition   16 Nov 2015   
Recent Progress in “FUTURE-PV Innovation” Project
KONAGAI MAKOTO
25th international Photovoltaic Science and Engineering Conference and Exhibition   16 Nov 2015   
Investigation of the optical absorption in Si/SiO2 superlattice for the application to solar cells
Shigeru Yamada, Makoto Konagai and Shinsuke Miyajima
SSDM2015   27 Sep 2015   
Process Technologies for Nano-Wall Top Cell in Crystalline Si Tandem Solar Cells
Yukimi Ichikawa, Masakazu Hirai, Shuhei Yoshiba, Makoto Konagai
31st European Photovoltaic Solar Energy Conference and Exhibition   14 Sep 2015   
Fabrication of Crystalline Silicon Wire-structure Using Al1-xOx film as a passivation layer for SOLAR CELL Application
Yusuke Shirayanagi, Yasutoshi Yashiki, Shinya Kato, Makoto Konagai
31st European Photovoltaic Solar Energy Conference and Exhibition   14 Sep 2015   
The optimization of the annealing treatment in fabricating a-SiOx:H/c-Si Heterojunction solar cells
He Zhang、Kazuyoshi Nakada、Shinsuke Miyajima、Makoto Konagai
28 May 2015   
FUTURE-PV Innovation - Toward an energy conversion efficiency exceeding 30% - [Invited]
Yasuyoshi KUROKAWA, Makoto KONAGAI
Singapore-Japan Joint Workshop on Photovoltaics   11 Dec 2014   
Recent Progress in Development of Innovative Solar Cells in Japan [Invited]
Makoto Konagai
Asian Nations Joint Workshop on Photovoltaics (JSPS 11th Workshop on the Future Direction of Photovoltaics)   23 Nov 2014   
Outdoor Measurements of Spectral-splitting Photovoltaic System Using GaAs Solar Cell and GaInP Solar Cell
T. Okamoto, A. Hosono, S. Ishii, Y. Ogawa, Y. Masuda, Y. Ueda and M. Konagai
The 6th World Conference on Photovoltaic Energy Conversion(WCPEC-6)   23 Nov 2014   

Association Memberships

 
 

Works

 
Study of High-Efficiency Narrow Bandgap Si Based Thin Film Solar Cells
Artistic Activity   1997 - 2000
Development of High Efficiency CdTe Thin Film Solar Cell
Artistic Activity   1999 - 2001
Evaluation of polycrystalline Si thin films deposited at high deposition rates by using pure monosilane
Artistic Activity   2001 - 2001

Research Grants & Projects

 
silicon based thin film solar cell
化合物薄膜太陽電池
Preparation of superlattices by molecular beam epitaxy
solar energy materials and solar cells