[6p-C17-1~15] 21.1 Joint Session K "Wide bandgap oxide semiconductor materials and devices"

△ [6p-C17-12] Correlation between carrier lifetime and photocatalytic performance of Nb-doped TiO₂

〇(M2)Takaya Ozawa¹, Najima Hayao¹, Kato Masashi¹ (1.NITech)

Keywords:TiO2, Carrier Lifetime, Semiconductor photocatalyst

Rutile TiO₂ is a typical photocatalyst material because of stability against corrosion in electrolyte. Nb doping to TiO₂ enhances electrical conductivity and visible light absorption, and thus increases their photocatalytic performance. However, there is few report on the influence of carrier lifetime on photolytic performance for Nb-doped TiO₂. Therefore, we measured carrier lifetimes and photocurrents for TiO₂ single crystals with different Nb doping.