Carbene Based Ruthenium Complexes and 2D-π-2A Organic Sensitizers for Dye-Sensitized Solar Cell Applications

• Main Authors: Wan-chun Chen, 陳宛君
• Other Authors: Wen-ren Li
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/70275481346478214378

碩士 === 國立中央大學 === 化學學系 === 101 === There are various types of solar cells reported and the dye-sensitized solar cells (DSSC) possessing the advantages like low-cost, simple process, multi-color, penetration, flexible, has become a key technology to developed the present solar cells. In DSSC, the photosensitizer dye used plays an important role of light absorption and helps to gain higher efficiency. In the present work we develop the complexes bearing an asymmetric structures through replacing the 2,2'-bipyridine ligand of N3 dye by the car-bene-pyridine ligand. Conjugation property of these dyes was increased through incorporation of thiophene moieties. Thus, the resulting ruthenium complexes coded as CI114, CI115 and CI117 were designed and synthesized and the dye CI115 showed better photoelectric conversion efficiency. In concern to the expensive ruthenium metal complexes based photosensitive dyes, the pure organic sensitizers showing the advantages of easy to modification of the dye structure, high absorption coefficient, low cost of synthesis and low environmental hazards, etc., were also designed. The sensitizers DD107 and DD108 representing the 2D-π-2A configuration, in which the benzene rings were incorporated in the π-bridge of the dye, were designed and synthesized. Sensitizer DD100 with D-π-A configuration was designed to evaluate the efficiency difference between 2D-π-2A and D-π-A configured sensitizers. We believe that such kind of innovative design principle will provide a new direction to the modification of organic photosensitizers to help gain higher light absorption and enhancement in overall conversion efficiency.