染料修饰掺杂纳米晶TiO_2薄膜的光电转换性能

Study of Conversion of Light to Electricity of Nanocrystalline Ti02 Films Doped Zn2+ Modified by Dyestuff

用溶胶-凝胶法制备了掺杂锌离子的纳米晶TiO2薄膜,并用4,4’-二羧酸联吡啶钌对其敏化.实验结果表明,通过羧酸基与纳米晶TiO2薄膜电极发生强相互作用,实现了染料激发态向纳米晶TiO2薄膜电极导带高效注入电子,从而使宽禁带半导体的光电转换效率得到提高.

It was reported in this paper that the TiO2 films doped Zn2+ were prepared by Sol -Gel process. Bis (2, 2' - bipyridy -4, 4'- discarboxylate) ruthenium (Ⅱ) acted as charge-transfer sensitizers for nanocrystalline TiO2 films. The experimental result showed that the strong interreaction of the carboxylate group with nanocrystalline TiO2 films realized electron injection from the excited state of the complex into the conduction band of nanocrystalline TiO2 films electrode and so made solar - to - electric energy conversion efficiency enhance.