| 摘要: | 本論文主要以有機光伏打電池(Organic photovoltaic cells, OPVs)的非富勒烯受體(Non-fullerene acceptor, NFA)材料作為主軸。在NFA材料分子設計使用環戊烷二噻吩(Cyclopentadithiophene, CDT)作為核心，接上噻吩吡嗪(Thiophene-pyridine, TP)作為π-spacer，接著在末端接上不同的拉電子基團茚酮(Indanone, IN)、二氟茚酮(Difluorodicyanomethylene indanone, INF)、二氯茚酮(Dichlorodicyanomethylene indanone, INCl)和二溴茚酮(Dibromodicyanomethylene indanone, INBr)，製備出四個新型NFA材料: IN-TP-CDT-b8 (1)、INF-TP-CDT-b8 (2)、INCl-TP-CDT-b8 (3)及INBr-TP-CDT-b8 (4)。這些新型NFA材料已完成NMR及質譜結構鑑定，並透過 DPV 及 UV-Vis測量電化學及光學性質(HOMO / LUMO 與 Eg)，接著由TGA及DSC檢測顯示此系列的分子具有良好的熱穩定性。這四種NFA材料將應用於OPV和作為添加劑應用於鈣鈦礦太陽能電池(Perovskite solar cells, PSC)，目前正進行相關元件測試，期望它們能展現優異的光電轉換效率。;This thesis focuses on the utilization of non-fullerene acceptor (NFA) materials in organic photovoltaic cells (OPVs). The molecular design of these NFAs incorporates a cyclopentadithiophene (CDT) core, a thiophene-pyridine (TP) π-spacer, and various electron-withdrawing end groups, including indanone (IN), difluorodicyanomethylene indanone (INF), dichlorodicyanomethylene indanone (INCl), and dibromodicyanomethylene indanone (INBr). Four novel NFA materials, namely IN-TP-CDT-b8 (1), INF-TP-CDT-b8 (2), INCl-TP-CDT-b8 (3), and INBr-TP-CDT-b8 (4), have been successfully synthesized. The structures of these NFA materials have been characterized using NMR and mass spectrometry. Their electrochemical and optical properties, such as HOMO/LUMO levels and bandgaps (Eg), have been evaluated through DPV and UV-Vis spectroscopy. Moreover, thermal analysis (TGA) and differential scanning calorimetry (DSC) have demonstrated the excellent thermal stability of this molecular series. These four NFA materials will be implemented in OPVs and also utilized as additives for perovskite solar cells (PSC). Comprehensive device testing is currently underway to assess the anticipated superior photovoltaic conversion efficiency offered by these newly developed NFA materials. |
