Novel thin film composites and co-catalysts for visible light-induced water splitting

在这个建议的框架内，我们申请资金的研究和开发的新颖的和有前途的光电催化薄膜复合系统的水分解。我们的复合系统的独特特征是（i）开发TaON-、Ba 3 Ta 5 O 15-和BiVO 4-基异质薄膜作为具有可调节带隙能量、带能级和电导率的光阳极，（ii）适应器件级黄铜矿基薄膜和硅-也与串联太阳能电池组合-作为新型复合光电阴极和复合光阳极，（iii）开发新的电催化剂以改善HER（析氢）和OER（析氧），以及（iv）通过化学稳定的碳质层进行表面钝化以避免光腐蚀并改善长期稳定性。有了这些复合材料，我们设想开发新的半电池，结合到一个新的测试设备组件，使用我们最有效的光电极，用于可见光驱动的水裂解的目的。

Within the framework of this proposal we apply for funding of research and development of novel and promising photoelectrocatalytic thin film composite systems for water splitting. The unique characteristics of our composite systems are (i) development of TaON-, Ba3Ta5O15-, and BiVO4-based heterogeneous thin films as photoanodes with adjustable band gap energies, band-energy levels and conductivities, (ii) adaptation of device-grade chalcopyrite-based thin films and silicon - also in combination with tandem solar cells - as novel composite photocathodes and Composite photoanodes, (iii) development of new electrocatalysts for improvement of HER (hydrogen evolution) and OER (oxygen evolution), and (iv) surface passivation by ultrathin chemically stable carbonaceous layers to avoid photocorrosion and to improve long-term stability. With these composite materials we envisage the development of new half-cells combined to a novel test device assembly using our most efficient photoelectrodes for the purpose of visible light-driven water splitting.