| 초록 |
Development of cost-effective organic photovoltaic cells has been of great interest as it relates to the worldwide concerns of climate change and energy security. Recently, solution-processable solar cells based on low band gap small molecules have attracted great attention for their numerous attractive features, i.e., high light absorption, tunable optoelectronic properties, high carrier mobility, and excellent stability. To develop suitable molecular electron-donors, a promising approach is to synthesize planar backboned molecules substituted with alkyl chains that contribute to solubility, molecular self-assembly, and carrier mobility. Here we report our efforts in synthesize and characterization of a new class of electron-donor materials for photovoltaic purpose. We find that the proper combination of planar molecular backbones and the substituted alkyl chains is critical to achieve high performance photovoltaic performance. |
