Energy Conversion Devices and Materials Laboratory Research Group Front Page Professor Kazuhiro Ohkawa leads the so-called ECODEVICES research group, which stands for Energy Conversion Devices and Materials Laboratory Led by Prof. Kazuhiro Ohkawa, the ECO Devices Laboratory is challenging to develop energy saving devices such as LED or Laser lighting, and energy-generation devices using photo-catalysis phenomena. The energy-saving and generation devices would help to solve energy problems in the future. Our research will make new devices and realize new ideas of material development and material growth technology. Welcome as our member ECO Devices Laboratory welcomes