Characterization of Dye-Sensitized Solar Cells (DSSC) Based on Porphyrin Derivatives (BPP)

• Main Authors: Te-Lung Lee, 李德龍
• Other Authors: Ming-Way Lee
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/13064808883768262371

碩士 === 國立中興大學 === 物理學系所 === 95 === In this research, we study three kinds of derivative of new porphyrin –BPP [5,15-Bis(4-carboxylicphenyl) porphyrinato) zinc (II ) ] as the dyes of Dye-Sensitized Solar Cells (DSSCs). The new BPP dyes can absorb more solar light with a broader wavelength range. We prepared nanocrystalline TiO2 films from four kinds of TiO2 paste, and used N3 dye as the sensitizer for a basic production method of DSSCs. We were able to get a conversion efficiency of 6.4% using the Dyesol paste. The absorption spectra of [2-3-4N,N-Bia(4-methoxylphenyl)-N- (4-ethynylphenyl)amine] substituted BPP shift down to lower energies as the number of substituent is increased. The B band main absorption peak shifts from 413 to 451 nm (one substitute) and 472 nm (two substitutes); the Q band main absorption peak shifts from 543 to 624 nm (one substitute) and 676 nm (two substitutes). We report the current-voltage characteristic curves, fill factor (FF), shirt-circuit current Isc, open-circuit voltage Voc, and conversation efficiency η under the standard conditions of AM 1.5 incident light with 100 mW/cm2 power for the three types of porphyrin-derivative DSSCs . The parent BPP dye has the highest solar-to-energy conversion efficiency of η = 0.46%, and FF = 61.1%, ISC = 0.113 mA, VOC = 0.563 V were obtained.