染料敏化太阳能电池光阳极致密层的研究

发布时间：2018-05-16 08:58

  本文选题：染料敏化太阳能电池 + 致密层　； 参考：《天津大学》2014年硕士论文

【摘要】：致密层对染料敏化太阳能电池（DSSC）光电性能的提高具有重要的意义。致密层的引入可以抑制导电基底上电子与电解液中I-3的电子复合。本论文是针对染料敏化太阳能电池光阳极材料致密层TiO2、ZnO的制备及性能的研究。 研究了TiO2致密层的两种制备方法：以钛酸丁酯为前驱体的水热反应合成TiO2粒子并配置成溶胶制备TiO2致密层和以月桂胺盐酸盐为形貌控制剂的溶胶凝胶法直接合成TiO2溶胶制备TiO2致密层。通过比较两种方法的实验流程、所得TiO2致密层的形貌及所制成DSSC的光电转化性能，证明了该溶胶凝胶法可制得含有粒径8～10nm的锐钛矿型TiO2粒子的溶胶，且该溶胶均匀透明，利于旋涂法制膜。所得TiO2薄膜致密平整，，具有良好的阻挡导电基底与电解液直接接触的作用。溶胶凝胶法制备致密层工艺简单，无需高温高压，且效果突出，得到的TiO2致密层具有良好的抑制电子复合和改善TiO2连接性的作用。制备三层TiO2致密层的染料敏化太阳能电池短路电流密度和光电转化效率分别提高了15.1%和25.6%。 采用溶胶凝胶法分别制备ZnO、TiO2溶胶并旋涂制得含有三层底部ZnO致密层和两层TiO2致密层的复合致密层，引入该种ZnO/TiO2致密层的染料敏化太阳能电池短路电流密度、开路电压及光电转化效率分别提高了15.3%、3.7%和29.6%。通过电化学性能测试如交流阻抗测试、开路电压衰减测试及电池暗电流测试，进一步明确了致密层对染料敏化太阳能电池光电性能的影响。
[Abstract]:The dense layer plays an important role in improving the photoelectricity performance of Dye-sensitized Solar cells (DSSCs). The introduction of dense layer can inhibit the electron recombination between the conducting substrate and I-3 in electrolyte. In this paper, the preparation and properties of TIO _ 2O _ 2 ZnO as a dense layer of dye sensitized solar cell photoanode materials were investigated. Two preparation methods of TiO2 dense layer were studied: synthesis of TiO2 particles by hydrothermal reaction with butyl titanate as precursor and preparation of TiO2 dense layer by collocation of sol and direct synthesis of TiO2 by sol-gel method with lauryl amine hydrochloride as morphology control agent TiO2 dense layer was prepared by TiO2 sol. By comparing the experimental process of the two methods, the morphology of the dense layer of TiO2 and the photoelectric conversion properties of the prepared DSSC are obtained. It is proved that the sol containing 8~10nm particle size anatase type TiO2 particles can be prepared by the sol-gel method, and the sol is uniform and transparent. It is propitious to spin coating film. The obtained TiO2 thin films are compact and smooth, and have a good effect of blocking the direct contact between the conductive substrate and the electrolyte. The preparation process of dense layer by sol-gel method is simple, no need of high temperature and high pressure, and the effect is outstanding. The obtained TiO2 dense layer has a good effect on inhibiting electron recombination and improving TiO2 connectivity. The short-circuit current density and photoelectric conversion efficiency of the dye sensitized solar cells prepared by the three-layer TiO2 dense layer were increased by 15.1% and 25.6%, respectively. The composite dense layer containing three layers of ZnO dense layer at the bottom and two layers of TiO2 dense layer were prepared by sol-gel method. The dye sensitized solar cell short-circuit current density of the ZnO/TiO2 dense layer was introduced. The open circuit voltage and photoelectric conversion efficiency were increased by 15. 3% and 29. 6% respectively. The effect of dense layer on the photovoltaic performance of dye sensitized solar cells was further clarified by electrochemical performance tests such as AC impedance test, open circuit voltage attenuation test and cell dark current test.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM914.4

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