Photosensitization of Nanocrystalline TiO2 Electrode Modified with C60 Carboxylic Acid Derivatives

✍ Scribed by Wen Zhang; Ya-Ru Shi; Liang-Bing Gan; Chun-Hui Huang; Yan-Qin Wang; Hu-Min Cheng

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 428 KB
• Volume: 19
• Category: Article
• ISSN: 0256-7660
• DOI: 10.1002/cjoc.20010190114

✦ Synopsis

Abstract

C~60~ carboxylic acid derivatives can be readily adsorbed on the surface of nanocrystalline TiO~2~ film. The C~60~ carboxylic acids adsorbed on nanocrystalline TiO~2~ films act as charge‐transfer sensitizer. The electron transport from TiO~2~ to the C~60~ derivatives results in the generation of the cathodic photocurrent. The short‐circuit photocurrent of a C~60~ tetracarboxylic acid is 0.45 μA/cm^2^ under 464 nm light illumination. The photoelectric behaviour of ITO electrodes modified by the same C~60~ carboxylic acids is different from that of the modified TiO~2~ electrodes, and shows anodic photocurrent.