TiO_2包覆SnO_2光阳极的制备及其对DSSC性能的影响  

Preparation of SnO_2-TiO_2 Photoanode and Its Effect on the Property of DSSC

作　　者：齐涛[1] 张永超[1] 石海英[1] 田均庆 郑威[1] 

机构地区：[1]哈尔滨理工大学材料科学与工程学院,哈尔滨150040

出　　处：《人工晶体学报》2015年第10期2847-2851,共5页Journal of Synthetic Crystals

基　　金：哈尔滨市科技创新人才项目(2013RFXXJ004);教育部科学技术重点研究项目(211044)

摘　　要：以TiCl4溶液浸泡处理的花状SnO2晶体薄膜为光阳极,经N3染料浸渍,与Pt对电极,I-/I-3电解质组装成染料敏化太阳能电池(DSSC)。通过XRD对花状SnO2粉体物相进行分析;利用SEM对花状SnO2粉体及SnO2-TiO2薄膜表面形貌进行分析;电池的光电性能通过伏安特性曲线(J-V)进行分析。结果表明:花状SnO2-DSSC有利于提高电池的光电性能,光电转换效率较球状SnO2-DSSC提高近38%。经TiCl4处理的SnO2-TiO2-DSSC的短路电流(Jsc)和开路电压(Voc)分别达到7.20mA·cm-2和0.63V,电池的光电转换效率达到3.24%,与纯花状SnO2-DSSC相比提高了近4倍。The dye-sensitized solar cells （DSSC） were assembled with N3-dipped flower-like SnO： crystal coated with an ultrathin TiO： layer as photoanode, Pt plate as the counter electrodes and I-/I3- as the electrolyte. The prepared SnO： powders were analyzed by XRD, the morphology of SnO2 and SnOz-TiO2 film was observed by SEM, photoelectric properties of DSSC were analyzed by volt-ampere （J-V） characteristic curve. The results show that SnOz-DSSC exhibited better photoelectric properties than SnO2 particle. Photoelectric conversion efficiency increases 38%. The short-circuit current density （JsC） and the open-circuit voltage （VDC） of SnO2-TiO2-DSSC disposed through TiC14 solution were 7.20 mA· cm-2 and 0.63 V, respectively. Photoelectric conversion efficiency of SnOz-TiO2-DSSC reaches 3.24% , four times higher than pure flower-like SnO2-DSSC.

关 键 词：染料敏化太阳能电池 二氧化锡 四氯化钛 光电转换效率 

分 类 号：TM914[电气工程—电力电子与电力传动]