中文摘要：

研究了三种不同长度碳链取代的半菁类染料2-[4-（N，N-二羧乙基）氨基]苯乙烯基-1，3，3-三甲基苯并吲哚镝碘（BIDCl）、2-[4-（N，N-二羧乙基）氨基]苯乙烯基-1-丁基-3，3-二甲基苯并吲哚铺碘（BIDC2）和2-[4-（N，N-二羧乙基）氨基]苯乙烯基-1-辛基-3，3-二甲基苯并吲哚锚碘（BIDC3）敏化太阳能电池的光电化学性能。其中BIDCl的敏化效果最好，在100mW/cm^2氙灯光源下，开路电压、短路电流、填充因子和转换效率分别是430mV、1．31mA／cm^2、0．52、0．29％。研究表明，随着半菁染料碳链取代基的增长，光电转换效率逐渐降低。

英文摘要：

The photoeleetroehemieal properties of three new hemieyanine dyes with different carbon chain, 2-[ 4- （ N,N-diearboxyethyl ） amino ] phenylethenyl-1,3,3-trimethyl benz[e]indolium iodide （ BIDC1 ）, 2-[ 4-（ N,N- diearboxyethyl ） amino ] phenylethenyl-1-buty-3,3-dimethyl benz[e]indolium iodide （ B1DC2 ） and 2-[ 4-（ N,N- diearboxyethyl）amino]phenylethenyl-3,3-dimethyl-1-octyl benz[e]indolium iodide（BIDC3）, have been studied. It is found that BIDC1 is the best candidate with conversion yield of 0.29%, short-circuit photoeurrent of 1.31mA/cm^2, open-circuit voltage of 430mV and fill factor of 0.52 under illumination with 100roW/era2 white light from a xenon lamp. The longer carbon chain the hemieyanine holds, the less charge recombination will occur from TiO2 to oxidation state dye or eleetrolye. The conversion efficiency η also decreases along with the extension of carbon chain.