設施農業：智慧感測【化學系/葉鎮宇特聘教授】
| 論文篇名 | 英文：Anthracene-Bridged Sensitizers for Dye-Sensitized Solar Cells with 37% Efficiency under Dim Light中文: 具蒽基之染料敏化劑應用於染料敏化太陽能電池，在弱光條件下其光電轉換效率可達37% |
| 期刊名稱 | ADVANCED ENERGY MATERIALS |
| 發表年份,卷數,起迄頁數 | 2022, 12, 2104051 |
| 作者 | Chen, Ching-Chin; Vinh Son Nguyen; Chiu, Hsiao-Chi; Chen, Yan-Da; Wei, Tzu-Chien; Yeh, Chen-Yu(葉鎮宇)* |
| DOI | 10.1002/aenm.202104051 |
| 中文摘要 | 新型蒽橋接有機染料 CXC12 和 CXC22 是針對於弱光下使用的高效染料敏化太陽能電池 (DSSC) 設計而合成的，與其結構相似的染料 TY6 相比，CXC 染料具有額外的蒽-乙炔基團以擴展分子的 π 共軛系統，從而導致紅移吸收和增強的摩爾消光係數。 CXC12 和 CXC22於 AM 1.5G 太陽光和 T5 熒光下的吸收光譜分別在 561 和 487 nm 處達到最大值，比 TY6（419 nm）更好。最初期望在 CXC12 中橋接蒽基的 2,6 位引入長烷氧基鏈將延緩電荷重組和染料分子堆疊的現象，並達到更高的開路電壓 (VOC)。然而，與 CXC22 和 TY6 相比，CXC12 分子在光電陽極上的吸附量急劇下降到不到一半，從而導致短路電流 (JSC) 降低，從而降低了光電轉換效率(PCE%)。在這三種蒽基染料中，CXC22的分子結構具有最適合的吸收光譜特性，並在染料吸附和分子堆疊之間取得平衡，在弱光下的光電轉換效率表現高達37.07%。這項工作顯示了具有蒽橋接之有機染料在室內光伏應用中的潛力。 |
| 英文摘要 | New anthracene-bridged organic dyes CXC12 and CXC22 are designed and synthesized for high-efficiency dye-sensitized solar cells (DSSCs) under dim light. Compared to their parent dye TY6, CXC dyes have additional anthracene-acetylene group to extend the π-conjugation of the molecules, resulting in red-shifted absorption and an enhanced molar extinction coefficient. The absorption spectra of CXC12 and CXC22 with a maximum located at 561 and 487 nm, respectively, match to those of AM 1.5G sunlight and T5 fluorescent light better than that of TY6 (419 nm). It was initially anticipated that long alkoxyl chains introduced to the 2,6-position of the bridged anthracenyl in CXC12 will retard charge recombination and dye molecular aggregation, and achieve a higher device open-circuit voltage. However, adsorption of CXC12 molecules on the photoanode dramatically decrease to less than half as compared to that of CXC22 and TY6, resulting in lower short-circuit current and thus power conversion efficiency. Among these three anthracene-based dyes, CXC22 has the most appropriate molecular structure for light harvesting and striking the balance between dye loading and molecular aggregation, to exhibit a remarkable power conversion efficiency as high as 37.07% under dim-light. Therefore, this work shows the potential of anthracene-bridged organic dyes for indoor photovoltaic applications. |
| 發表成果與本中心研究主題相關性 | 太陽能電池可將光轉換成電，其中染敏電池中開發新型染料以期提高光電轉換效率的目標在永續農業發展上的重要性不容小覷，因為光源可以是大自然的太陽光，可以是人造的室內弱光，而光則是在農業發展上不可或缺的條件之一。 |
