| 초록 |
Polymer solar cells (PSCs) have drawn significant attention for these applications due to the global technology trends toward economic feasibility and continuous development coupled with efforts to preserve the environment. Fullerene and their derivatives have been used to electron-acceptor materials in PSCs. But they have some disadvantages, such as cost, stability and limited spectral absorption. To overcome their insufficiencies, we synthesized new small molecule accepter using caffeine derivatives. Caffeine can form intermolecular hydrogen bonding between N-H···O=C of the molecules. The effects of hydrogen bonding over extensive π–π stacking results in morphologies that lead to higher photovoltaic efficiencies. In this study, the synthesized molecules are characterized by 1H-NMR, TGA, UV-vis spectrometer, CV and fabricated device were measured. |
