設施農業：智慧感測【化學系/葉鎮宇特聘教授】
| 論文篇名 | 英文：All-Porphyrin Photovoltaics with Power Conversion Efficiency of 7.2% 中文：光電轉換效率為7.2%之全紫質光伏電池 |
| 期刊名稱 | ACS ENERGY LETTERS |
| 發表年份,卷數,起迄頁數 | 2020, 5 (8), 2641–2650 |
| 作者 | Chiang, Yun-Ju; Hsiao, Yi-Hsuan; Chen, Yu-Hsuan; Hung, Chieh-Ming; Chen, Hsieh-Chih*; Yeh, Chen-Yu(葉鎮宇)* |
| DOI | 10.1021/acsenergylett.0c01128 |
| 中文摘要 | 在此篇論文報導中， 我們藉由官能基的改變調整鋅紫質其分子軌域的能階高低，分別為D1及A1兩化合物，其中D1在光伏電池中扮演電子供給者的角色，A1則扮演電子授予者的角色，此兩分子間的堆疊效應也能改善分子間電荷傳輸。此外D1及A1相較於彼此的吸光範圍上有互補的效果，這一特性能提升對太陽光的吸收。將D1及A1以1:0.5 製成光伏元件，優化條件後其光電轉換效率可達7.21%。 |
| 英文摘要 | In this Letter, two zinc porphyrin small molecules D1 and A1 with different functional groups have been employed as the donor and acceptor, respectively, for the construction of all-porphyrin photovoltaics (APPs). The strong electron-donating phenylamino moiety ensures the D1 small molecule with a high-lying highest occupied molecular orbital energy level aligns a cascade energy level with the A1 small molecule, accomplishing the driving force for exciton dissociation and prompting intermolecular π−π stacking to ameliorate the intermolecular charge transport. Meanwhile, good complementary absorptions between D1 donor and A1 acceptor greatly contribute to harvesting more solar flux. For the optimized devices, 1:0.5 D1:A1 device delivered a relatively high power conversion efficiency of 7.21% with an open-circuit voltage of 0.76 V, a short-circuit current density of 14.43 mA cm−2, a fill factor of 65.7%, and a small energy loss of 0.61 eV. |
