| 초록 |
Although the development of individual photoelectrode materials have been vigorously studied, there have been lack of methodological research to maximize photocatalytic activity. In this study, we suggest a versatile protocol to modify the interface between photoelectrode and electrolyte with highly charged polyelectrolyte, improving photocatalytic activity and charge transfer on the integrated photoelectrode. The highly charged polyelectrolyte, PDDA and PSS, are additionally deposited on the surface of various photoelectrode using Layer by Layer (LbL) assembly method. The polymeric multilayer induces electrical field on the surface of photoanode, enhancing charge transfer at the surface of photoanode for efficient water oxidation. The polymeric multilayer assembled photoanode not only exhibits a significantly higher photocurrent density and cathodic shift in the onset potential under light irradiation but also can be potentially applied to other photoelectrode materials. |
