Dye Sensitized Solar Cells: The Effect of π-Conjugation Structure on Dye Stability

• Main Authors: Hong, Chong-Yao, 洪崇堯
• Other Authors: Chen, Chin-Ti
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/95434786976294980293

碩士 === 國立交通大學 === 應用化學研究所 === 99 === In this thesis, we successfully synthesized series of Donor-π-Acceptor (D-π-A) organic dye. They can be divided into two categories: First, their structure is free-rotating π-conjugation structures, which are AN1CA, AN2CA, AN3CA; and the second is the structure with the ring-locked π -conjugation system, which are ANR1CA and ANR2CA. By theoretical calculation of this series of structures, we can know that they show the intramolecular charge transfer (ICT). Furthermore, we discussed the differences of π–conjugation structures influencing the stability and power conversion efficiencies. And then, we got the evidences by UV-vis spectra of the dyes were dissolved in a solvent and adsorbed on titanium dioxide surface, the loading of dyes on titanium dioxide, the dyes’ molar extinction coefficient, the dyes’ HOMO / LUMO energy level of the CV and DPV measurements, the AC-2 measurements, and the stability meaurements of dyes were dissolved in a solvent and adsorbed on titanium dioxide surface. Under the device measurement, their power conversion efficiency are AN1CA 3.86% (reference to the N719 is 6.87%), AN2CA 4.27% ( reference to the Z907 is 5.06%), AN3CA 4.39% (reference N719 is 6.27%), ANR1CA 2.76% (reference to the N719 is 6.87%), ANR2CA 1.92% (reference to the N719 was 6.87%).