Booth No.
Address North20,West10, Kita-Ku, Sapporo, Hokkaido 001-0020, Japan
Tel +81-11-706-9423
Fax +81-11-706-9427
Division Nanostructure Physics Laboratory
E-mail i-akira@es.hokudai.ac.jp
Exhibit highlight We have investigated a multi-striped orthogonal photon-photocarrier propagation solar cell. Photons being impinging on the disk generating photo-carriers moving in the radial direction, the photons propagate in the direction orthogonal to that of the photo-carriers’. Because of the orthogonality, the new solar cell can optimize the absorption of light and the photo-carrier collection independently. By exploiting the degree of freedom along the axis perpendicular to the disk, we can convert the full solar spectrum into electricity resulting in high conversion efficiency. The connected solar cells of ours can convert virtually the whole spectrum of black body radiation into the electricity with a single output voltage, being a candidate for next generation solar cells with a conversion efficiency as high as the thermodynamic limit.
  • Policy & Concept
  • Photovoltaics
  • Eco-business