Kazuhiro Sayama

Direct splitting of water under visible light irradiation with an oxide semiconductor photocatalyst

Zhigang Zou, Jinhua Ye, Kazuhiro Sayama et al. · Nature · 2001 · 3.2K citations

Natural Sciences, Chemistry, Materials Science +16

Molecular Design of Coumarin Dyes for Efficient Dye-Sensitized Solar Cells

Kohjiro Hara, Tadatake Sato, Ryuzi Katoh et al. · The Journal of Physical Chemistry B · 2002 · 1.1K citations

Natural Sciences, Chemistry, Materials Science +16

Design of new coumarin dyes having thiophene moieties for highly efficient organic-dye-sensitized solar cells

Kohjiro Hara, Mitsuhiko Kurashige, Yasufumi Dan‐oh et al. · New Journal of Chemistry · 2003 · 649 citations

Natural Sciences, Chemistry, Materials Science +17

A coumarin-derivative dye sensitized nanocrystalline TiO2 solar cell having a high solar-energy conversion efficiency up to 5.6%

Kohjiro Hara, Kazuhiro Sayama, Hironori Arakawa et al. · Chemical Communications · 2001 · 602 citations

Natural Sciences, Materials Engineering, Materials Science +17

Photoelectrochemical Decomposition of Water into H₂ and O₂ on Porous BiVO₄ Thin-Film Electrodes under Visible Light and Significant Effect of Ag Ion Treatment

Kazuhiro Sayama, Atsushi Nomura, Takeo Arai et al. · The Journal of Physical Chemistry B · 2006 · 527 citations

Natural Sciences, Chemical Engineering, Materials Science +17