合成具光致變色特性的染料並應用於染料敏化太陽能電池

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题名:	合成具光致變色特性的染料並應用於染料敏化太陽能電池
作者:	王兆賢;Wang, Chao-Shian
贡献者:	化學學系
关键词:	光致變色;染料敏化太能電池;釕金屬錯合物染料;有機染料
日期:	2024-08-21
上传时间:	2024-10-09 15:28:06 (UTC+8)
出版者:	國立中央大學
摘要:	染料敏化太陽能電池(Dye sensitized solar cells，簡稱DSC)，因為有著製程簡易、製造成本低、色彩多樣化等諸多優點而具有發展潛力。但是DSC元件的顏色無法在元件完成組裝後再次進行調整，可能成為應用於光伏窗戶等裝置的問題。本研究合成用於DSC元件之具光致變色特性的錯合物染料及有機染料，期望所敏化之DSC元件具光致變色性質，錯合物染料在結構中以含有S=O鍵的iPr-pySO (2-(propane-2-sulfinylmethyl)-pyridine)做為輔助配位基，合成出染料PC-3-Cl與PC-3-NCS，在濃度為10-4 M之PC-3-Cl與PC-3-NCS的DMF溶液中在經功率為10 W、波長為365 nm的光源照射20分鐘後，二個錯合物染料的吸收皆變強，顏色也分別從原本的橘色或黃色轉變為深棕色。此外，以染料PC-3-Cl做為光敏劑所組裝之元件的光電轉換效率為1.25%，在照光8分鐘後元件的光電轉換效率可提高至1.63%；而以染料PC-3-NCS做為光敏劑所組裝之元件的光電轉換效率為3.16%，在經由功率為10 W、波長為365 nm的照射後9分鐘後元件的光電轉換效率下降至2.44%。有機染料則是以BT (benzothiadiazole)和BTA(benzotriazole)單元做為輔助拉電子基(Auxiliary acceptor, Aa)的NW-1和NW-2，染料結構形式為D-Aa-π-A，其中有機染料NW-1在濃度為2⨯10-4 M的甲苯溶液中經由功率為10 W、波長為365 nm的光源照射10分鐘後，染料溶液的顏色雖然從原本的亮橘色轉變為暗橘色，但吸收光譜並沒有改變，NW-1似乎不具光致變色的特性。以NW-1做為光敏劑所組裝之元件的光電轉換效率也僅為0.71%。;Dye-sensitized solar cells (DSCs) have significant development potential due to their numerous advantages, including simple manufacturing processes, low production costs, and a wide variety of colors. However, the color of DSC components cannot be adjusted once the assembly is completed, which may pose a problem for applications such as photovoltaic windows. This study synthesizes photochromic complex dyes and organic dyes for use in DSC components, aiming to impart photochromic properties to the sensitized DSC components. The complex dyes incorporate the iPr-pySO (2-(propane-2-sulfinylmethyl)- pyridine) ligand, which contains an S=O bond, as an auxiliary ligand. The synthesized dyes, PC-3-Cl and PC-3-NCS, when dissolved in DMF at a concentration of 10-4 M, exhibited increased absorption and a color change from orange or yellow to dark brown after being exposed to a 10 W, 365 nm light source for 20 minutes. Additionally, the photoelectric conversion efficiency of the DSC assembled with PC-3-Cl as the photosensitizer improved from 1.25% to 1.63% after 8 minutes of light exposure. However, the photoelectric conversion efficiency of the DSC assembled with PC-3-NCS as the photosensitizer decreased from 3.16% to 2.44% after 9 minutes of exposure to a 10 W, 365 nm light source. The organic dyes NW-1 and NW-2 use BT (benzothiadiazole) and BTA (benzotriazole) units as auxiliary acceptors (Aa) in a D-Aa-π-A structure. For organic dye NW-1, when dissolved in toluene at a concentration of 2⨯10-4 M and exposed to a 10 W, 365 nm light source for 10 minutes, the dye solution color changed from bright orange to dark orange, but the absorption spectrum did not change, indicating that NW-1 doesn’t possess photochromic properties. The photoelectric conversion efficiency of the DSC assembled with NW-1 as the photosensitizer was only 0.71%.
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