Study on photosynthesis-mimic photoelectric conversion using dye-titania compositionally graded materials

采用溶胶凝胶法将含有染料的二氧化钛凝胶分层，并控制薄膜的蒸气处理，制备了由多层组成的染料-二氧化钛梯度电极。相邻二氧化钛层导带边缘差异的形成促进了电子在多层膜中的注入和输运过程。通过对导带电平的控制，提高了工作电极的性能。

The dye-titania compositionally graded electrodes consisting of multi-layers were prepared by layering the dye-containing titania gel by the sol-gel coating and controlling steam-treatment of the films. Formation of the differences between the conduction band edges of the neighboring titania layers promoted the electron injection and transport process in the multi-layers. The performance of the working electrodes was improved by the control of the conduction band level.