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Composite Dyes and Their Sensitizing Technology of Two-member-pieces

Author: WangXinTing
Tutor: WangLiQiu
School: Yanshan University
Course: Chemical Engineering
Keywords: dye-sensitized solar cell dye composites two-membrane-pieces sensitizingequipment photography and photoelectric properties
CLC: TM914.4
Type: Master's thesis
Year: 2012
Downloads: 6
Quote: 0
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Abstract


Dye-sensitized solar cells with good properties of high photoelectric efficiency, easypreparation and low cost, have excellent potential applications in various fields. This paperhas prepared the dye composites from four dyes, used the composites to sensitize thenano-TiO2, and obtained the photo anode and solar cell; desiged and developedTwo-Membrane-Pieces sensitizing method and the sensitizing equipments.The composites were prepared from4-aminoazobenzene, linear pentmethine cyanine,rhodamine B, and fluorescein according to their concentrations and ratio. They had goodabsorption in200-700nm, and the absorption spectra of them were close to those of solarlight emitted from the sun. Their sensitizing properties were tested. The composites wereused for sensitizing the nano-TiO2, and the dye sensitizing nano-TiO2electrodes and solarcells were prepared. They had photo voltage of293.1mV and current of0.539mA.New sensitizing method, Two-membrane-pieces, was developed and the patentconcerned had been applied. New method was carried out by putting the two membranepieces by face to face into solution of the dye composite, the dye entered into the gapbetween the two membrane pieces by capillary action, and the two membrane pieces weresensitized by the dye composite. The sensitizing equipment was designed and the patentconcerned with the equipments and dye sensitizing nano--TiO2electrodes materials hadbeen obtained. Comparing the sensitizing efficiency of Two-membrane-pieces with that ofimmersion, the two methods both had good sensitizing efficiency, butTwo-membrane-pieces method has more advantages: highly homogeneous sensitizingeffect, small quantity of dye used, low cost, no waste formed and environmentally friendlyprocess. It has great potential to be applied in industry.

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CLC: > Industrial Technology > Electrotechnical > Independent power supply technology (direct power) > Photocell > Solar cells
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