| 초록 |
Tin dioxide (SnO2) inverse opals (IOs) having a pore size of approximately 260 nm in the 370 nm sized polystyrene bead (PS) templates were developed by a spin-coating-assisted sol−gel process. Upon this template, the SnO2/WO3/BiVO4 core-shell IOs were developed by the facile electrodeposition, where the thickness of WO3 layer depended on the applied charge amount for WO3 and BiVO4 electrodeposition. The pore diameter of the SnO2 IO structure declined noticeably as the charge amount of the deposited WO3 and BiVO4 layer increased. The enhancement of the Jsc under visible light contributed significantly to the improvement of the total Jsc. Furthermore, considering that the favorable cascading band alignment can boost the fast charge separation and transport through the conductive SnO2 IO skeleton. BiVO4 layer was adapted in the surface layer due to the more narrowing Eg of ~ 2.4 eV. Herein, the PEC performance and other results would be presented. |
