SENSITIZERS FOR COLORFUL ZINC OXIDE DYE-SENSITIZED SOLAR CELL

研究了一系列有机染料在一步阴极沉积模板法制备的氧化锌太阳能电池中的应用。结果表明：1)在半四羧酸的吲哚部分引入长烷基，提高了电池性能。入射光子电流效率（IPCE）提高到38.0%。2)脱氧胆酸的加入对恶嗪类染料有较好的去除效果。IPCE和光电转换效率（η）分别提高到6.91和0.29%。3)在2′、4′、5′、7′-四氟-、-四氯-、四溴-（伊红Y）和-四氟荧光素衍生物中，IPCE值依次为：I (73%) > Cl（69%）、Br (65%) > H (40%) > F（24%）。4)羧基在方英染料中作为锚定基团效果最好。5)一种n -羧基乙基吲哚衍生物在七亚甲基青碱染料中表现出最好的性能。乙基环己烯基衍生物表现出最好的性能：IPCE (29%), J_<sc>(2.01 mA cm^<-2>)。当二甲基变为二丁基时，短路光电流密度（J_<sc>）值增加到2.30 mA cm^<-2>.6) 3-（2-羧基乙基）-2-[4-（二甲氨基）苯乙烯基]苯并噻唑碘在柔性氧化锌太阳能电池中作为敏化剂表现出最好的性能。在490纳米左右的IPCE。J_<sc>，开路光电压（V_<oc>），填充因子（ff）和η分别为54.5%,6.22 mA cm^<-2>, 0.53 V， 0.59和1.94%。

Application of a series of organic dyes for zinc oxide solar cells prepared by the one-step cathode deposition template method was examined. Following informations were obtained :1) Cell performance was improved by introducing long alkyl group at the indole moiety in semisquaric acids. The incident photon-to-current efficiency (IPCE) was improved to 38.0%.2) The addition of deoxycholic acid was effective for oxazines dyes. IPCE and solar-light-to-electricity conversion efficiency (η) were improved to 6.91 and 0.29%, respectively.3) Among 2',4',5',7'-tetrafluoro-, -tetrachloro-, tetrabromo- (eosin Y), and -tetraiodo fluorescein derivatives, the IPCE value was in the following order : I (73%) > Cl (69%), Br (65%) > H (40%) > F (24%).4) Carboxy group was best as an anchor group in squarylium dyes.5) A N-Carboxyethyl indolenium derivative showed the best performance in heptamethinecyanine dyes. An Ethylcyclohexenyl derivative showed the best performance : IPCE (29%), J_<sc>(2.01 mA cm^<-2>). When dimethyl group was changed to dibuthyl group, short-circuit photocurrent density (J_<sc>) value increased to 2.30 mA cm^<-2>.6) 3-(2-Carboxyethyl)-2-[4-(dimethylamino)styryl]benzothiazolium iodide showed the best performance as the sensitizer in flexible zinc oxide solar cell. The IPCE at around 490 nm,.J_<sc>, open-circuit photovoltage (V_<oc>), fill factor (ff), and η were observed to be 54.5 %, 6.22 mA cm^<-2>, 0.53 V, 0.59, and 1.94 %, respectively.