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首页> 外文学位 >Optimization of dye-sensitized solar cells using thin film zinc oxide and titanium dioxide semiconducting materials fabricated by electrophoretic deposition.
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Optimization of dye-sensitized solar cells using thin film zinc oxide and titanium dioxide semiconducting materials fabricated by electrophoretic deposition.

机译：使用电泳沉积薄膜氧化锌和二氧化钛半导体材料对染料敏化太阳能电池进行优化。

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摘要

The Dye-Sensitized Solar Cell (DSC) has been touted to be one of the more promising photovoltaic solar cells for capturing solar energy and its conversion to electricity. DSCs have advantages of cost and ease of construction but disadvantages with respect to low conversion efficiencies and system stability. To improve upon the efficiency of DSCs, many studies regarding materials related to the components of these cells such as the photoelectrode, the type of dye, the electrolyte, and cell characteristics have been conducted. As such and efficiencies in some cases have reached levels of 11 % thus far. However, it is generally thought that this number can be improved and that the optimal materials and methods of cell construction have yet to be established. It is generally thought that problems restricting improvements in DSC performance fall into the following categories: (1) An optimum choice of the photoelectrode (PE) material; (2) Transport of electrons to the conductive substrate (collector); (3) Injection of electrons from dye to PE; (4) Redox reactions of electrolyte; (5) A general lack of considering the entire cell system as opposed to single components.;In this thesis, we investigated the effects of the following factors to solve some of the perceived problems: (1) PE material; (2) Morphology of the PE; (3) Thickness of PE film; (4) Amount of dye on the PE films as a function of the factors (1--3); (5) Optimal conditions for DSC.;As PE materials, we selected ZnO and TiO2 due to their material characteristics and promising results from previous studies. ZnO nanorods were synthesized via a solvothermal method using a ZnO sol and subsequently characterized. DSCs with PE films of ZnO nanorods and commercially available ZnO nanopowders were constructed using electrophoretic deposition method and effects of film morphology, film thickness and the amount of dye loading studied. Similarly, DSCs with films of TiO2 and ZnO nanopowders were also constructed and the same effects investigated. We would hope that these findings would prove useful for those wishing to further optimize DSCs for higher efficiencies.
机译：染料敏化太阳能电池（DSC）被吹捧为最有前途的光伏太阳能电池之一，用于捕获太阳能并将其转化为电能。 DSC具有成本低廉和易于构造的优点，但是在转换效率低和系统稳定性方面则具有缺点。为了提高DSC的效率，已经进行了许多与这些电池的成分有关的材料的研究，例如光电极，染料的类型，电解质和电池的特性。因此，到目前为止，在某些情况下效率已达到11％。然而，通常认为可以提高该数目，并且尚未建立最佳的细胞构建材料和方法。通常认为限制DSC性能改善的问题可归为以下几类：（1）光电电极（PE）材料的最佳选择； （2）将电子传输到导电基底（集电极）； （3）从染料向PE注入电子； （4）电解质的氧化还原反应； （5）普遍缺乏考虑整个电池系统而不是单个组件的能力。;本文研究了以下因素对解决某些已知问题的影响：（1）PE材料； （2）PE的形态； （3）PE膜的厚度； （4）PE膜上染料的量与因素（1--3）的关系； （5）DSC的最佳条件；作为PE材料，我们选择ZnO和TiO2是因为它们的材料特性和先前研究的有希望的结果。通过使用ZnO溶胶的溶剂热法合成ZnO纳米棒，然后进行表征。利用电泳沉积方法构建了具有ZnO纳米棒的PE膜和市售ZnO纳米粉的DSC，并研究了膜形态，膜厚度和染料负载量的影响。同样，还构建了具有TiO2和ZnO纳米粉膜的DSC，并研究了相同的效果。我们希望这些发现对希望进一步优化DSC以获得更高效率的人们有用。

著录项

  • 作者

    Hara, Yukihiro.;

  • 作者单位

    The University of Wisconsin - Madison.;

  • 授予单位 The University of Wisconsin - Madison.;
  • 学科 Engineering Materials Science.
  • 学位 Ph.D.
  • 年度 2011
  • 页码 137 p.
  • 总页数 137
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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