| 초록 |
Photoelectrochemical (PEC) water splitting is an ideal energy conversion technology for clean and renewable hydrogen. From the viewpoint of achieving high solar-to-hydrogen efficiency, tungsten trioxide (WO3) has attracted high attention because of its suitable band gap, long hole diffusion length and high conductivity. However, WO3 has difficulties, such as low light harvesting efficiency and sluggish surface reaction kinetics, to be applied on PEC application. In this study, we report the Fe-doped WO3 hybrid structure which is surface-treated by ultrafast thermal shocking.The rapid sol-flame doping method is utilized as efficient alternative to easily introduce metal dopant without affecting WO3 morphology. Furthermore,the flame-induced hybrid structure remarkably restricts charge recombination and increases surface catalytic properties. |
