초록 |
Organic photovoltaic device represents an alternative renewable energy source which has the potential benefits of comparatively solution processing, low-cost fabrication, and wide applications. However, it has the relatively lower photovoltaic performance as compared to conventional silicon based solar cells or dye-sensitized solar cells. Recently, tremendous developments in polymer solar cells (PSC) have intrigued researchers. In this research, we synthesized a new type of copolymers by adding small amounts of carbazole and we obtained an enhanced PCE. This result is ascribed to the good balance between electron and hole mobilities in the devices |