NEAR-INFRARED SENSITIZERS FOT DYE-SENSITIZED SOLAR CELLS

本研究探讨四种染料作为染料敏化太阳能电池的敏化剂。第一章合成了一系列3-芳基-4-羟基环丁-3-烯-1，2-二酮化合物，并研究了它们作为二氧化钛太阳能电池敏化剂的性能。化合物对二氧化钛有很强的亲和性，荧光强度和3-芳基-4-羟基环丁-3-烯-1，2-二酮在二氧化钛表面的自组装是提高太阳能光电转换效率的重要因素。观察到3-[4-（双十二烷氨基）苯基]-4-羟基环丁-3-烯-1，2-二酮的最高效率为0.96%。第二章合成了新型的近红外吸收七甲川菁染料，并将其作为氧化锌太阳能电池的敏化剂。2-（羧基苯基）硫代吲哚七甲川菁染料在804 nm处的入射光电流效率（IPCE）为4.17%。第三章介绍了一系列新型的含2-羧乙基的苯乙烯基染料， ...更多信息 胺作为敏化剂用于一步阴极沉积模板法制备的氧化锌太阳能电池。它们<max>在氧化锌上的最大吸收波长在500 nm左右。作为吸电子杂芳环，苯并噻唑环是最好的，二甲氨基作为给电子基团。因此，3-（2 -羧乙基）-2-[4-（二甲氨基）苯乙烯基]苯并噻唑碘化物作为敏化剂表现出最好的性能。在500 nm附近的IPCE、最大短路光电流密度（I_<SC>）、开路光电压（V_<OC>）、填充因子（ff）和η分别为59.6%、6.33 mA cm-<-2>1、0.51 V、57%和1.84%。第四章研究了一系列9-取代的苝-3，4-酸酐作为敏化剂对一步阴极沉积模板法制备的氧化锌太阳能电池的敏化作用。溴代衍生物的性能最好。IPCE在431。结果表明，苯乙烯类染料的增感性能较好，其<SC>I_0、V_0<OC>、ff和η分别为35.5%、1.78mA cm ~ <-2>2、0.46V64%和0.52%。通过改变苯乙烯基染料的结构，可以进行红移增感剂的分子设计。少

Four kinds of dyes were examined as sensitizers in dye-sensitized solar cells in this study. In chapter 1, a series of 3-aryl-4-hydroxycyclobut-3-ene-1,2-diones were synthesized and examined as sensitizers for a titanium oxide solar cell. The compounds showed strong affinity for titanium oxide and the fluorescence intensity and self-assembly of the 3-aryl-4-hydroxycyclobut-3-ene-1,2-diones on the titanium oxide surface were important factors in enhancing the solar-light-to-electricity conversion efficiency (η). The highest efficiency of 0.96% was observed for 3-[4-(didodecylamino)phenyl]-4-hydroxycyclobut-3-ene-1,2-dione. In chapter 2.novel near-infrared absorbing heptamethine cyanine dyes were synthesized and examined as sensitizers for a zinc oxide solar cell. A 2-(carboxyphenyl)thio-substituted indolium heptamethine cyanine dye showed the incident photon-to-current efficiency (IPCE) of 4.17% at 804 nm. In chapter 3, a series of novel styryl dyes having a 2-carboxyethyl group were ex … More amined as sensitizers for zinc oxid solar cell prepared by a one-step cathode deposition template method. Their absorption maxima (λ_<max>) on zinc oxide were observed around 500nm. As the electron-withdrawing heteroarom atic moiety, benzothiazolium ring was best and dimethylamino group as the electron-donating moiety. Consequently, 3-(2 -carboxyethyl)-2-[4-(diemthylamino)styryl]benzothiazolium iodide showed the best properties as a sensitizer. The IPCE around 500 nm, maximum short circuit photocurrent density (I_<SC>), open-circuit photovoltage (V_<OC>), fill factor (ff), and η were observed to be 59.6%, 6.33 mA cm^<-2> 0.51 V, 57%, and 1.84%, respectively. In chapter 4, a series of 9-substituted perylene-3,4-anhydrides were examined as sensitizers for a zinc oxide solar cell prepared by a one-step cathode deposition template method. The best performance was obtained for the bromo derivative. The IPCE at 431. nm, I_<SC>, V_<OC>, ff, and η were observed to be 35.5 %, 1.78 mA cm^<-2>, 0.46 V 64%, and 0.52%, respectively.Thus, styryl dyes showed good performance as the sensitizers. The molecular design of bathochromic sensitizers is possible by changing the structure of styryl dyes. Less