[10p-M111-1~9] Colloidal Quantum Dots: Fundamentals and Applications

[10p-M111-2] Infrared photovoltaics using colloidal quantum dots and their potential for ultra-high efficiency solar cells

〇Takaya Kubo¹, Haibin Wang¹, Hiroshi Segawa^1,2 (1.UTokyo RCAST, 2.UTokyo Graduate School of Atrs and Sciences)

Keywords:Infrared photovoltaics, PbS colloidal quantum dots, ZnO nanowires

Size dependent absorption band gap and solution process compatibility make colloidal quantum dots attractive materials for low-cost solar cells and photodetectors. So far, various semiconductor nanoparticles have been synthesized and applied to solar cells such as quantum dot-sensitized solar cells and solid state heterojunction solar cells. In particular, heterojunction solar cells made up of wide bandgap semiconductors and PbS colloidal quantum dots have been widely studies. This is chiefly because of their wide bandgap tunability, enabling to cover the full solar spectrum. We review a recent progress in hetero-junction colloidal quantum dot-based solar cells together with our results regarding infrared solar cells.