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Processing and Optical Engineering of Polymer-Fullerene Solar Cells Towards High Efficiency and Environmentally Friendly Fabrication for Real-Life Applications.

机译：聚合物-富勒烯太阳能电池的加工和光学工程，旨在为现实生活中的应用提供高效，环保的制造。

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摘要

Facing the tremendous challenges of energy shortage and global warming, embracing renewable energies is an obvious choice and necessary action. Solar energy is arguably the most important source of renewable energy. Organic photovoltaics (OPV) has the potential to make the solar energy much more affordable. However, OPV technology is still relatively new and immature and requires substantial improvements on device performance, stability, fabrication, and many other aspects to make OPV actually useful. The studies described in this dissertation are aimed to address some of the critical challenges and provide ideas for future developments.;In chapters 1 and 2 the motivations and current developments of OPV research are briefly overviewed. In chapter 3, two high performance polymer:fullerene bulk-heterojunction solar cells used in the works of this dissertation are described. Chapter 4 describes our developments of a device processing approach that involves completely halogen-free solvents, which is desirable to achieve sustainable large-scale fabrication of OPV cells. The solvent system, consisting of small amount of a novel solvent additive 1-methylnaphthalene (Me-naph) in common halogen-free solvent matrix, can drastically improve phase-separated morphology of OPV devices to achieve efficient charge separation and yield high-performance.;In Chapter 5, OPV devices in a novel optical resonant cavity structure are systematically investigated. Such structure has exhibited several advantages: first, light trapping of thin film OPV devices can be boosted by carefully tuning the optical field in the resonant cavity. Second, replacing the typical transparent ITO electrode with semi-transparent TeO2/Ag electrode simultaneously solves or ameliorates multiple problems associated with the ITO electrode such as high cost, brittleness, and limited conductance, making the cavity structure viable for making flexible and large-area device.;In Chapter 6, semi-transparent organic photovoltaic (OPV) cells with high device performance and tunable transparency are demonstrated. The devices not only possess high performance to transparency ratio but also close to perfect color rendering index (nearly 100), making it a strong candidate for power-generating window applications.
机译：面对能源短缺和全球变暖的巨大挑战，拥抱可再生能源是显而易见的选择和必要的行动。太阳能可以说是最重要的可再生能源。有机光伏（OPV）有潜力使太阳能价格更加便宜。但是，OPV技术仍相对较新且不成熟，需要对器件性能，稳定性，制造和许多其他方面进行实质性改进才能使OPV真正有用。本论文所描述的研究旨在解决一些关键挑战并为未来的发展提供思路。在第一章和第二章中，简要概述了OPV研究的动机和当前的发展。在第三章中，介绍了两种高性能的聚合物：富勒烯体-异质结太阳能电池。第4章描述了我们涉及完全不含卤素的溶剂的器件处理方法的发展，这对于实现OPV电池的可持续大规模制造是理想的。该溶剂体系由普通无卤素溶剂基质中的少量新型溶剂添加剂1-甲基萘（Me-naph）组成，可以显着改善OPV器件的相分离形态，以实现有效的电荷分离并产生高性能。 ；在第5章中，系统研究了一种新颖的光学谐振腔结构中的OPV器件。这种结构具有几个优点：首先，可以通过仔细调整谐振腔中的光场来增强薄膜OPV器件的光陷获。其次，用半透明的TeO2 / Ag电极代替典型的透明ITO电极可同时解决或改善与ITO电极相关的多个问题，例如成本高，易碎和电导率受限，从而使腔体结构可用于制造柔性和大面积区域在第6章中，将演示具有高设备性能和可调透明度的半透明有机光伏（OPV）电池。这些器件不仅具有高性能与透明性的比率，而且接近完美的显色指数（接近100），使其成为发电窗口应用程序的强大候选者。

著录项

  • 作者

    Chen, Kung-Shih.;

  • 作者单位

    University of Washington.;

  • 授予单位 University of Washington.;
  • 学科 Materials science.;Electrical engineering.;Alternative Energy.;Polymer chemistry.
  • 学位 Ph.D.
  • 年度 2014
  • 页码 154 p.
  • 总页数 154
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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