K
Koji Matsubara
Researcher at National Institute of Advanced Industrial Science and Technology
Publications - 200
Citations - 5293
Koji Matsubara is an academic researcher from National Institute of Advanced Industrial Science and Technology. The author has contributed to research in topics: Solar cell & Thin film. The author has an hindex of 33, co-authored 194 publications receiving 4659 citations.
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Journal ArticleDOI
CIGS absorbers and processes
Shigeru Niki,Miguel A. Contreras,Ingrid Repins,Michael Powalla,Katsumi Kushiya,Shogo Ishizuka,Koji Matsubara +6 more
TL;DR: The current status and future perspectives of CIGS solar cells and modules are discussed in this paper, and the current status, problems, and prospects of co-evaporation and selenization are discussed.
Journal ArticleDOI
Terawatt-scale photovoltaics: Trajectories and challenges
Nancy M. Haegel,Robert Margolis,Tonio Buonassisi,David Feldman,Armin Froitzheim,Raffi Garabedian,Martin A. Green,Stefan W. Glunz,Hans-Martin Henning,Burkhard Holder,Izumi Kaizuka,Benjamin Kroposki,Koji Matsubara,Shigeru Niki,Keiichiro Sakurai,R. Schindler,William Tumas,Eicke R. Weber,Gregory M. Wilson,Michael Woodhouse,Sarah Kurtz +20 more
TL;DR: This work assesses realistic future scenarios and makes suggestions for a global agenda to move toward PVs at a multi-TW scale.
Journal ArticleDOI
Terawatt-scale photovoltaics: Transform global energy
Nancy M. Haegel,Harry A. Atwater,Teresa M. Barnes,Christian Breyer,Anthony K. Burrell,Yet-Ming Chiang,Stefaan De Wolf,Bernhard Dimmler,David Feldman,Stefan W. Glunz,Jan Christoph Goldschmidt,David Hochschild,Ruben Inzunza,Izumi Kaizuka,Ben Kroposki,Sarah Kurtz,Sylvere Leu,Robert Margolis,Koji Matsubara,Axel Metz,Wyatt K. Metzger,Mahesh Morjaria,Shigeru Niki,Stefan Nowak,Ian Marius Peters,Simon P. Philipps,Thomas Reindl,André Richter,Doug Rose,Keiichiro Sakurai,Rutger Schlatmann,Masahiro Shikano,W.C. Sinke,Ronald A. Sinton,B.J. Stanbery,Marko Topič,William Tumas,Yuzuru Ueda,Jao van de Lagemaat,Pierre J. Verlinden,Matthias Vetter,Emily L. Warren,Mary Werner,Masafumi Yamaguchi,Andreas W. Bett +44 more
TL;DR: A future with ∼10 TW of PV by 2030 and 30 to 70 TW by 2050 is envisioned, providing a majority of global energy, and what is needed in research in PV performance, reliability, manufacturing, and recycling is summarized.
Journal ArticleDOI
ZnO transparent conducting films deposited by pulsed laser deposition for solar cell applications
Koji Matsubara,Paul Fons,Kakuya Iwata,Akimasa Yamada,Keiichiro Sakurai,Hitoshi Tampo,S. Niki +6 more
TL;DR: In this article, low resistivity and highly transparent ZnO conducting films for thin-film solar cell applications were fabricated at low temperature by pulsed laser deposition, which achieved an average optical transmission of 91% for wavelengths between 400 and 1100 nm.
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Uniaxial locked epitaxy of ZnO on the a face of sapphire
Paul Fons,Kakuya Iwata,Akimasa Yamada,Koji Matsubara,S. Niki,Ken Nakahara,Tetsuhiro Tanabe,Hidemi Takasu +7 more
TL;DR: In this paper, high-resolution x-ray diffraction measurements show an increase in lateral coherence length from several tens of nanometers to > 0.7μm for growth of c-oriented ZnO on the a surface as opposed to the c surface of sapphire.