Triphenylamine-Ethlenedioxythiophene-based Organic Dye-Sensitized Solar Cells

• Main Authors: Yu-kuang Sun, 孫宇光
• Other Authors: Chien-hsin Yang
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/65294181277747837062

碩士 === 國立高雄大學 === 化學工程及材料工程學系碩士班 === 99 === In this study, light-sensitive and all-organic of dye molecules have been synthesized by triphenylamine linked with 3,4-ethylenedioxythiophene structure. All-organic dye molecules, compared to the commercially-available ruthenium-based complexe type, hvae a high absorption coefficient, the designable and metal-free. Triphenylamine has tree para-positions with can be replaced by reaction. However, it was found in the literature that triphenylamine was usually connected to an electron acceptor only. In order to understand the best structure model of triphenylamine, (Z)-2-cyano-3-(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl) acrylic acid was linked to triphenylamine of para-positions, the para-position substituted triphenylamine were divided into ETPA1(one function group), ETPA2(two function group) and ETPA3(two function groups and one carbazole group) according to the number of substitutions. The photosensitive organic dye molecules were donor-brige-acceptor structure, and chelated titanium dioxide nanoparticles by the carboxylic groups of cyanoacetic acid. Optical, electrical and photoelectric conversion efficiency are measured. The synthetic dyes of ETPA3 structure was compared with CTPAR2(electron acceptor part be replaced by the rodanine-3-acetic acid) has better efficiency(brige was introduced). The optimal efficiency of DSSCs reaches to 5.20% for ETPA3 dye