吡唑特釕金屬錯合物和三苯胺衍生物為基底之染料敏化太陽能電池

Dye-sensitized Solar Cell Based on Pyrazolate Ru(II) Complexes and Triphenylamine Derivatives

劉瑋鑫(Wei-Hsin Liu)

指導教授 ： 周必泰

國立臺灣大學/理學院/化學研究所/博士(2008年)

https://doi.org/10.6342/NTU.2008.00303

摘要

短摘
關鍵詞：染料敏化太陽能電池、吡唑特釕金屬錯合物、金屬到配位基電荷轉移、分子內電荷轉移
在一二章中，描述了一系列以增加吸光範圍為前提所合成的吡唑特釕金屬染料，由於這些染料是由三芽配位基所構成的，所以同時也增加了其熱穩定性。除了上述的優點外，再把其製成元件後，我們發現這些三芽釕金屬錯合物都擁有不錯的光轉換效率。
在第三章裡，在以增加染料吸光係數的前提下，合成了一系列的吡唑特釕金屬錯合物。在達成目標後，我們發現可利用這項優點降低二氧化鈦電極的厚度，進而減少暗電流的產生，而達到較高的開路電壓。在最佳化元件後，HYH060 得到8.07%的光轉換效率。
在第四章裡，為了降低金屬染料價格過高的問題，設計了一系列的三苯胺衍生物為基底的有機染料。在利用3,4-Ethylenedioxythio- phene （EDOT）連接起donor跟acceptor後，增加吸光的範圍，得到了15.5 mA/ cm2的短路電流及7.3%的光轉換效率。

關鍵字

染料敏化太陽能電池 ； 吡唑特釕金屬錯合物 ； 金屬到配位基電荷轉移 ； 分子內電荷轉移

並列摘要

Chapter 1~2. New Family of Ruthenium-Dye-Sensitized Nanocrystalline TiO2 Solar cell
A new series of ruthenium complexes with tridentate bipyridine-pyrazolate ancillary ligands has been synthesized in an attempt to elongate the π-conjugated system as well as to increase the optical extinction coefficient, possible dye uptake on TiO2 and photostability. As for the DSSC application, it was found that the complexes possess highly conversion efficiency under standard AM 1.5 irradiation (100 mW cm-2).

Chapter 3. Strategic Design and Synthesis of Novel Trident Bipyridine Pyrazolate Coupled Ru(II) Complexes to Achieve Superior Solar Conversion Efficiency
A new series of trident bipyridine pyrazolate coupled Ru(II) complexes CK7, CK9, HYH052 and HYH060 were strategically synthesized. In comparison to N719, CK7 and HYH060 achieved the original proposal of gaining absorption extinction coefficient ranging from 350 to ~550 nm, accompanied by lowering of the lowest lying energy gap. These advantages allow us to reduce the thickness of TiO2 layer, resulting in great suppress of dark current and hence increase of Voc. Upon optimization, HYH060 has attained η= 8.07, Jsc= 15.8 mA cm-2, Voc = 753 mV and FF = 0.678, the results of which are superior to that of N719 prepared in this study.

Chapter 4. Simple Organic Molecules Bearing 3,4-Ethylene dioxythiophene Linker for Efficient Dye-Sensitized Solar Cells
3,4-Ethylenedioxythiophene and bis[2-(2-methoxyethoxy) exthoxy]thiophene bridged donor-acceptor molecules LJ1 ~ LJ4 for dye-sensitized solar cells have been synthesized, among which LJ1 achieved a solar-to-energy conversion efficiency of 7.3%, compared to 7.7% optimized for N719 dye

並列關鍵字

dye-sensitized solar cells ； tridentate bipyridine pyrazolate ligand ； metal to ligand charge transfer ； intramolecular charge transfer

參考文獻

Chapter 1. New Family of Ruthenium-Dye-Sensitized Nanocrystalline TiO2 Solar Cells with a High Solar-Energy-Conversion Efficiency

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