| 摘要: | 染料敏化太陽能電池(Dye sensitized solar cells, 簡稱DSCs)具有製程簡單、色彩多樣化及高效率的室內弱光發電特性等諸多優點而具有發展潛力。大部分光電轉換效率超過 10%的 DSCs 所使用的染料為釕金屬錯合物，其中多數染料的吸收波段不含近紅外光區，因此若是能增加染料在近紅外光區波段的吸收就有機會能使染料所敏化的元件有較高的光電轉換效率。本研究以先前本實驗室所開發的 DUY27染料之輔助配位基2-(5-(hexylthio)thieno[3,2-b]thiophen-2-yl)-4-(5-hexylthiophen-2-yl)pyridine (簡稱 LD7) 搭配吸收波段達近紅外光之N749 染料的固著配位基[2,2′:6′,2′′-terpyridine]-4,4′,4′′-tricarboxylic acid (H3tctpy)合成出吸收波段達近紅外光且吸收係數幾乎在所有波段皆高於 N749 染料之CCY32染料。此外，參考專利JP2013178968A中染料結構設計出 CCY-Si-1，其中輔助配位基 diphenyl(thieno[3,2-b]thiophene)silane (簡稱 Fthp-3-Si-Ph2)藉由兩個苯環作為 donor 進一步增加矽原子的 σ-donating 能力，然而 Fthp-3-Si-Ph2兩配位原子間剛性併環上角度過大且受到一定程度立體障礙影響而難以與釕金屬形成錯合物。
;Dye sensitized solar cells (DSC) have lots of advantages such as simple manufacturing process, variety of colors and good conversion efficiency under dim-light condition. Most of dyes used in DSCs with the power conversion efficiencies over 10 % are ruthenium complexes. The majority of them do not absorb the light in the near-infrared region. Therefore, in this research, 2-(5-(hexylthio)thieno[3,2-b]thiophen-2-yl)-4-(5-hexythio phen-2-yl)pyridine (LD7) was synthesized to be as ancillary ligand, combining the [2,2′:6′,2′′-terpyridine]-4,4′,4′′-tricarboxylic acid (H3tctpy) anchoring ligand to form CCY32 dye with the absorption extended to NIR -IR region. To extend the absorption of ruthenium complexes, cyclometalated ligand containing silicon as a coordinated site is another strategy. Therefore Fthp-3-Si-Ph2 ancillary ligand was designed and synthesis. Unfortunately, the angle on the rigid fused ring between the two ligand was not able to bond to the ruthenium metal ion . |
