Sensitization of Nanocrystalline TiO2 Solar Cell by Using Organic Dye Cocktails

• Main Authors: Yang-Ling Cheng, 鄭揚霖
• Other Authors: Yu-Min Yang
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/59384458752390350814

碩士 === 國立成功大學 === 化學工程學系碩博士班 === 94 === 　Although dye-sensitized solar cells with ruthenium dyes as sensitizers may reach an overall efficiency up to 10%, the high cost greatly limits their advances in application. In stead of ruthenium dyes, organic dye cocktails which contain two commercial cheap organic dyes — i.e. TCPP /Mercurochrome and C343/Mercurochrome — with various compositions were employed to sensitize the solar cell in this study. Adsorption properties, adsorption dynamics and dye loading, dye aggregation behavior, and photosensitization properties were investigated systematically. The experimental results indicated that dye cocktails were efficient in light harvesting. Furthermore, co-adsorption was found to suppress the aggregation of dyes. The overall efficiencies, however, show a negative deviation from the ideal mixing calculations. The main factors that affect the sensitization performance were discussed further through dye loading and IPCE(incident photon-to-electron conversion efficiency) characteristics.