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Flame synthesis of titanium dioxide nanoparticles and its application in dye sensitized solar cells.

机译：二氧化钛纳米粒子的火焰合成及其在染料敏化太阳能电池中的应用。

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摘要

The purpose of this dissertation research is to investigate the feasibility of using a direct flame synthesis technique for preparing mesoporous TiO 2 thin films for high efficiency Dye Sensitized Solar Cells (DSSC). DSSCs are photo-electrochemical cells with efficiencies comparable to that of traditional p-n junction solar cells. These cells have the potential to be fabricated substantially cheaper than other types of solar cells. However, the typical process of anode fabrication currently used for these cells, known as Sol-Gel, is a lengthy and complicated process which is a barrier to large scale fabrication of DSSCs.;It is shown that it is possible to use flame synthesis to produce efficient anodes for DSSCs. The technique, called Flame Stabilized on a Rotating Surface (FSRS), is a robust technique that combines nanoparticle synthesis and film deposition in one step, while maintaining great control over particle size, crystal phase and film thickness. In the first phase of the study, the property variations in the TiO2 nanoparticles are examined as a function of the flame synthesis condition. This is followed by a preliminary test of the mesoporous thin films in DSSCs to establish a baseline for the performance of the cells using the flame-synthesized thin films.;The work in the next phase of the study establishes the relationship among synthesis condition, particle/film properties and cell performance. Several cell characterization methods, including charge extraction and open circuit voltage decay are used to understand the relationship between cell performance and film properties. Finally, the potential of the flame synthesis method for producing tailored nano-scale TiO2 particles for high efficiency DSSCs are demonstrated, and the efficiencies are compared to other techniques used for synthesis of TiO2 anodes. The study demonstrates that Flame Stabilized on a Rotating Surface (FSRS) is an efficient technique to synthesize high efficiency DSSCs.
机译：本研究的目的是研究使用直接火焰合成技术制备高效染料敏化太阳能电池（DSSC）的介孔TiO 2薄膜的可行性。 DSSC是光电化学电池，其效率可与传统的p-n结太阳能电池相媲美。这些电池具有比其他类型的太阳能电池便宜得多的潜力。然而，目前用于这些电池的阳极制造的典型过程称为Sol-Gel，是一个漫长而复杂的过程，这是DSSC大规模制造的障碍。生产用于DSSC的高效阳极。这项技术被称为“旋转表面上的火焰稳定化（FSRS）”，是一项强大的技术，可将纳米粒子合成和薄膜沉积一步结合起来，同时又能很好地控制粒度，晶相和薄膜厚度。在研究的第一阶段，根据火焰合成条件检查TiO2纳米颗粒的性能变化。接下来是对DSSC中介孔薄膜的初步测试，以建立使用火焰合成薄膜的细胞性能的基线。;下一阶段的研究工作是建立合成条件，颗粒之间的关系。 /薄膜特性和电池性能。几种电池表征方法，包括电荷提取和开路电压衰减，用于了解电池性能与薄膜性能之间的关系。最后，证明了火焰合成方法为高效DSSC生产定制的纳米级TiO2颗粒的潜力，并将其效率与用于TiO2阳极合成的其他技术进行了比较。研究表明，稳定在旋转表面上的火焰（FSRS）是合成高效DSSC的有效技术。

著录项

  • 作者

    Nikraz, Saro.;

  • 作者单位

    University of Southern California.;

  • 授予单位 University of Southern California.;
  • 学科 Engineering Aerospace.;Nanotechnology.;Engineering Materials Science.;Engineering Mechanical.
  • 学位 Ph.D.
  • 年度 2012
  • 页码 156 p.
  • 总页数 156
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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