| 摘要: | 本論文主要可分為有機薄膜電晶體 (OTFTs)、有機光伏打電池 (OPVs) 和鈣鈦礦太陽能電池 (PSCs) 添加劑的材料開發。
有機薄膜電晶體 (OTFTs) 的部分，首先以具碳鏈環戊烷二噻吩 (CDTR) 開發出醌型材料 CDTRQ-12 (1)。之後再以具硫鏈環戊烷二噻吩 (CDTS) 為核心，將其兩旁外接不同之拉電子單元 INCl 及 DCV，得到 INCl-CDTS (2) 及 DCV-CDTS (3)。此新開發之三種有機薄膜電晶體材料，亦能作為添加劑應用於鈣鈦礦太陽能電池，鈍化鈣鈦礦層缺陷以提升電性。
在有機光伏打太陽能電池 (OPVs) 的部分，本研究以 A--D--A 的分子設計為目標，以 CDTS 為核心，於其兩端接上具苯基烷氧鏈環戊烷二噻吩 (CDT)，作為-spacer，之後在其末端外接拉電子單元 IN，成功地開發出一新型光電材料 IN-CDT-CDTS (4)。此非富勒烯 (NFA) 材料不僅能運用在有機光伏打太陽能電池，亦能作為添加劑應用於鈣鈦礦太陽能電池，鈍化鈣鈦礦層缺陷以提升電性。
這些新材料經由 UV-vis 及 DPV 測量其光學及電化學性質 (HOMO、LUMO 能階)，且經 DSC 及 TGA 測量其熱穩定性，而這些新開發的小分子有機材料正在進行其相關元件的測試。
;A series of new organic optoelectronic materials were synthesized and characterized for organic thin-film transistors (OTFTs), organic photovoltaic cells (OPVs), and perovskite solar cells (PSCs) applications.
For the OTFTs, dialkylated cyclopentadithiophene (CDTR)-based quinoidal compound, CDTRQ-12 (1), was synthesized and characterized. At the same time, the dithioalkylated methylidenyl cyclopentadithiophene (CDTS) core was developed and end-capped with two kinds of electron-withdrawing groups, such as dichlorodicyanomethylene indanone (INCl), and dicyanovinyl (DCV), via Knoevenagel condensation, to give new final compounds, INCl-CDTS (2) and DCV-CDTS (3), respectively.
For the OPVs, a new non-fullerene CDTS-based small molecule, IN-CDT-CDTS (4), was developed with an acceptor-π-donor-π-acceptor (A-π-D-π-A) structure. Whereas, CDTS was used as the central core, CDT served as π-spacer, and IN was utilized as the end capped groups. The above four newly developed materials can also be used as anti-solvents in PSCs to passivate the surface defects of perovskite films.
The optical and electrochemical properties (HOMO and LUMO) of these new materials were analyzed by UV-vis spectroscopy and DPV. Chemical structures were characterized by NMR and mass spectroscopy. Thermal properties were investigated by DSC and TGA. Optoelectronic devices using these newly developed small molecules are under optimization. |
