Organic Dyes for P-type Dye-Sensitized Solar Cell.

• Main Authors: Chen Wei-Ting, 陳薇婷
• Other Authors: Jiann T. Lin
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/21798347849532686059

碩士 === 國立臺灣師範大學 === 化學系 === 99 === A series of dyes (PT) with a carboxylic acid-conjugated spacer-donor-conjugated space-acceptor skeleton have been synthesized and used as the sensitizer for p-type dye-sensitized solar cells (DSSCs). Structural variation of the dye has significant influence on the photophysical and electrochemical properties of the dyes, and the incident photon-to-current conversion efficiencies of the DSSCs. DSSCs based on the sensitizers with two anchoring groups have more efficient hole injection and less dark current, and therefore higher Voc and Jscvalues those based on the dyes with only one anchoring group. Dark current and electrochemical impedance spectroscopy (ESI) were measured to rationalize the cell efficiencies. The efficiencies of the p-type devices based on PT series range from 0.043% to 0.081%. These values reach 49−92% of the standard device based on S(4-(bis(4-(5-(2,2-dicyanovinyl)thiophen-2-yl)phenyl)amino)benzoic acid) fabricated and measured under similar conditions.