新型纯有机光敏染料的合成及其应用于染料敏化太阳能电池的研究

发布时间：2018-01-04 23:05

本文关键词：新型纯有机光敏染料的合成及其应用于染料敏化太阳能电池的研究　出处：《大连理工大学》2014年博士论文　论文类型：学位论文

【摘要】：光敏染料是染料敏化太阳能电池的核心部分,设计、开发高效稳定的光敏染料对于提升电池的光电转换效率以及工业化应用有重要意义。本论文设计合成了几个系列纯有机光敏染料,系统地研究了染料的物理、电化学性质对染料敏化太阳能电池光伏性能的影响。异喹啉阳离子作为吸电子体引入到D-π-A体系中,设计合成了一系列不含乙烯基的光敏染料。应用于染料敏化太阳能电池时,染料JH304敏化的太阳能电池获得了最高7.3%(Jsc=14.40mA·cm-2,Voc=684mV,FF=74.4%)的光电转换效率。当采用不同数目-CH2-单元将异喹啉阳离子与羧基分开时,随着-CH2-数目的增加,电池的效率由6.8%降低到4.2%。然而,与异喹啉阳离子染料不同,-CH2-数目的增加使得绕丹宁染料的效率由4.1%提高到4.5%。羟基作为吸附基团引入D-π-A体系中,设计合成了一系列吡啶阳离子光敏染料,研究了不同的供电子体对染料光伏性能的影响。最终,染料JH401敏化的太阳能电池获得了2.6%的光电转换效率,且在440nm处获得了80%的IPCE值,这也是到目前为止羟基吸附染料获得的最高IPCE值。采用菲醌衍生物为π桥基,设计合成了含有不同供电子体和桥基的光敏染料。应用于染料敏化太阳能电池时,染料JH203敏化的太阳能电池获得了6.0%(Jsc=11.13mA·cm-2,Voc=720mV,FF=74.9%)的光电转换效率。老化测试表明,菲醌衍生物染料具有良好的稳定性。基于吩噻嗪的D-π-A与D-A-π-A结构光敏染料研究表明,D-A-π-A结构光敏染料表现出更宽、更红的吸收光谱,但是摩尔消光系数明显降低。在同样的测试条件下,D-π-A结构光敏染料获得了7.5%(Jsc=16.36mA·cm-2,Voc=706mV,FF=64.5%)的光电转换效率,而D-A-π-A结构染料敏化的太阳能电池产出了6.4%(Jsc=14.71mA.cm-2,Voc=645mV,FF=67.3%)的光电转换效率。
[Abstract]:The dye is the core part of the dye-sensitized solar cell design, development of efficient and stable photosensitive dyes have important significance for promoting the battery photoelectric conversion efficiency and industrial application. Several series of pure organic dyes were designed and synthesized in this paper, systematically studied the dye physics effect on the electrochemical properties on the photovoltaic performance of dye-sensitized solar cells.
Isoquinoline cation as electron withdrawing was introduced into D- PI -A system, a series of vinyl containing photosensitive dyes were designed and synthesized. Applied to dye-sensitized solar cell, dye sensitized JH304 7.3% was the highest (Jsc=14.40mA, cm-2, Voc=684mV, FF= 74.4%) of the photoelectric conversion efficiency when using different. The number of -CH2- units will be separated from the isoquinoline cation and the carboxyl group, with the increase of the number of -CH2-, the battery efficiency decreased from 6.8% to 4.2%.. However, unlike isoquinoline cationic dyes, increase the number of -CH2- makes the efficiency of rhodanine dyes increased from 4.1% to 4.5%.
Hydroxyl groups were introduced on the D- adsorption as PI -A system, a series of pyridinium cationic photosensitive dyes were designed and synthesized, studied the effect of different power supply on the photovoltaic performance of dye. Finally, dye sensitized JH401 solar cell photoelectric conversion efficiency was 2.6%, and the IPCE value of 80% in 440nm, the highest IPCE this is so far the hydroxyl value obtained by adsorption of the dye.
Using Phenanthrenequinone derivatives as PI bridge, photosensitive dyes containing different electron donor and bridge is designed and synthesized. Applied to dye-sensitized solar cell, dye sensitized JH203 was 6% (Jsc=11.13mA, cm-2, Voc=720mV, FF=74.9%) of the photoelectric conversion efficiency. The aging test showed that the dye has good Phenanthrenequinone derivatives stability.
Phenothiazine D- PI -A and D-A- PI -A structure of photosensitive dye based studies suggest that D-A- PI -A structure photosensitive dyes exhibit wider absorption spectrum, more red, but the molar extinction coefficient decreased obviously. In the test under the same conditions, the D- PI -A structure obtained 7.5% photosensitive dyes (Jsc=16.36mA, cm-2, Voc=706mV FF=64.5%), the photoelectric conversion efficiency of solar cells, and D-A- PI -A structure of dye sensitized output 6.4% (Jsc=14.71mA.cm-2, Voc=645mV, FF=67.3%) of the photoelectric conversion efficiency.

【学位授予单位】：大连理工大学
【学位级别】：博士
【学位授予年份】：2014
【分类号】：TM914.4

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