[10p-Z07-1~6] The interplay of ions and electrons in functional oxides towards new development of energy creating and storage devices

[10p-Z07-5] High-Voltage Type Solar Cell Using Transition Metal Oxide-Based Photocatalysts on Both Electrodes

〇Yasuo Izumi¹, Kazuki Urushidate¹, Keisuke Hara¹ (1.Chiba Univ)

Keywords:photocatalyst, solar cell, high voltage

To utilize light energy effectively, a solar cell to use transition metal-based photocatalyst layers on both electrodes. The advantage is to exhibit electromotive force more than 2 V per cell. Water is oxidized over photoanode while O₂ is reduced over photocathode. Therefore, light is permanently convereted into electricity. Higher polarizability and higher photoactivity were required for TiO₂ crystal on anode.The keys for BiOCl crystal on cathode were holes in the proximity of transparent electrode and photoactivity. In the lecture, the inprovement of electromotive force and cell power is discussed.