光敏劑於太陽能電池元件之工程應用

Engineering of Light-Absorbers for Dye-Sensitized Solar Cells

吳冠霖(Kuan-Lin Wu)

指導教授 ： 季昀

國立清華大學/理學院/化學系/博士(2013年)

摘要

世界正面臨著能源危機與環境污染等問題，發展可替代性、可再生的永續能源成為科學發展的重大目標。染料敏化太陽能電池屬於第三代太陽能電池，其生產成本低、可低照度發電以及可色彩化太陽能板等優點為引人注目。

本論文中研究主題分為三個目標: 第一、開發高穩性與高效率之新型無硫氰釕金屬染料為目標。第二、開發鋨金屬光敏染料，以增加光敏劑在近紅外光的光譜響應。第三、發展新型鈷電解質應用於釕金屬光敏染料，以增加元件開路電壓，突破現有光電轉換效率的瓶頸。

關鍵字

染料敏化太陽能電池 ； 釕金屬 ； 鋨金屬 ； 鈷電解質

並列摘要

Energy and environment concerns are among the huge challenges that the world is facing today. Encouraged by this realization is the evolution of the use of cleaner alternative energy. Dye-sensitized solar cells (DSCs) are potentially attractive candidates for the low cost manufacture which convert the solar energy into electricity.
The work conducted during this thesis aimed at optimizing the DSC using three different strategies: Developing the new class of thiocyanate-free ruthenium Ru(II) for stable and efficient DSCs, the synthesis of osmium Os(II) sensitizers to harvest a larger fraction of the solar spectrum, and optimization of the device using the cobalt based electrolyte with Ru(II) sensitizers to enhance open-circuit voltage of DSC device.
The first two chapters are the introduction to the photovoltaic devices, operation, and characterization techniques. In Chapter 3, we develop the new series class of thiocynate-free Ru(II) sensitizers by virtue of the bidentate and tridentate analogous pyridyl pyrazolate ancillary ligands. Chapter 4, we functionalize N749 sensitizer by incorporating the highly conjugated electron donating appendages. In Chapter 5, the design of Os(II) sensitizers will be an excellent option for expanding the spectral response well into the NIR region. Last chapter, it depicts that optimization of DSCs device with cobalt based electrolyte and the challenge of dye structure design.
All strategies: ruthenium dyes, osmium sensitizers, cobalt based electrolyte, and device optimization are developed during this thesis make a valuable contribution to the development of high stability and efficiency DSCs, which try to pave the way to get opportunity for commercialization of DSCs in the future.

並列關鍵字

dye-sensitized solar cell ； ruthenium ； osmium ； cobalt redox mediator

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