| 초록 |
As environmental pollution gets worse, solar energy is getting more attention as an alternative of the fossil fuel due to its clean and renewable properties. We can generate H2 which can be used as a fuel through photoelectrochemical(PEC) water splitting paired with oxygen production.g-C3N4 is noteworthy for its versatile properties. It has favorable light harvesting ability, efficient charge separation property, high surface area and stability. But, g-C3N4 has a medium band gap of 2.7eV. To facilitate the absorption of wider visible-light region, band gap should be further narrowed. Stacking up multi-layers with other semiconductor photocatalysts can give a solution of this problem. Location of g-C3N4 is also an important factor. We'll research on the synthesis method and various arrangements of multi-layered structures. We expect enhanced PEC performance as light harvesting, charge transfer efficiency and eventually good photocurrent density. |
