高効率赤外光駆動水分解を可能とするプラズモニック光電極の開発

2022年，我们设计了一种由Cu 2-xSeyS 1-y和CdS组成的等离子体光电极，用于近红外（NIR）光驱动的水氧化。我们用能带工程的方法对光电极的性能进行了评估，从而优化了CdS和Cu 2-xSeyS 1-y之间的界面电场。具有深费米能级（EF）的Cu_（2-x）SeyS_（1-y）在近红外光下表现出良好的光电催化析氧反应（OER）活性。我们用瞬态吸收光谱说明了热载流子的转移。最后，我们发现Cu 2-xSeyS 1-y的能带工程控制了近红外诱导的光电催化OER。结果表明，不仅更深的EF位置，而且更强的界面电场有助于光电催化OER。

In 2022, we designed a plasmonic photoelectrode comprising Cu2-xSeyS1-y and CdS for Near-Infrared (NIR)light driven water oxidation. We evaluated the performance of the photoelectrodes with band engineering of Cu2-xSeyS1-y which resulted in the optimized interfacial electric field between CdS and Cu2-xSeyS1-y. Cu2-xSeyS1-y with a deep fermi level (EF) showed good photoelectrocatalytic Oxygen evolution reaction (OER) activity under NIR light. We illustrated the hot carriers transfer by the transient absorption spectroscopy. Finally, we found that the band engineering of Cu2-xSeyS1-y controlled the NIR-induced photoelectrocatalytic OER. It was revealed that not only the deeper EF position but also the stronger interfacial electric field contributed to the photoelectrocatalytic OER.