方酸菁功能材料修饰纳米晶TiO_2薄膜电极的光电转换性能研究  

Photoelectric Conversion Performance Study of Nanocrystalline TiO2 Film Electrodes Modified with Squarylium Cyanine Functional Materials

作　　者：赵为[1] 张宝文[1] 曹怡[1] 萧绪瑞 杨蓉[1] 

机构地区：[1]中国科学院感光化学研究所光化学开放实验室

出　　处：《功能材料》1999年第3期304-306,共3页Journal of Functional Materials

基　　金：国家自然科学基金

摘　　要：考察了三种方酸菁染料修饰纳米晶ＴｉＯ２薄膜电极表面应用于光电化学太阳能电池进行光电转换的情况，发现它们的光电化学性能参数按照Ｓｑ３＞Ｓｑ２＞Ｓｑ１的顺序，随着染料在纳米晶ＴｉＯ２上吸附力的增强而提高。其中，Ｓｑ３的光电转换效率为２．１７％，它在６５０ｎｍ处的最高单色光光电流效率ＩＰＣＥ值达到６．２％，表明方酸菁是一类优良的光电转换功能材料。Three squarylium cyanine dyes (Sqs) were investigated to explore their applications in photoelectrochemical solar cells for photoelectric conversion.And nanocrystalline TiO2 film electrodes modified with Sqs were prepared to probe the photosensitizaition effects,their photoelectrochemical parameters were improved with the increase of adsorption ability on nanocrystalline TiO2 in the order of Sq3>Sq2>Sq1.A rather high photoelectric conversion efficiency up to 2.17% and the top incident monochromatic photon-to-photocurrent conversion efficiency (IPCE) of 6.2% at 650nm were obtained from the Sq3modified nanocrystalline TiO2 film electrode,which indicated that Sqs could be used as an excellent photoelectric conversion functional materials.

关 键 词：方酸菁 太阳能电池 纳米晶 薄膜电极 光电转换 

分 类 号：TM242.014[一般工业技术—材料科学与工程] TN360.4[电气工程—电工理论与新技术]