| 초록 |
Polymer solar cells(PSCs) have been regarded as important source of energy because of their low cost, solution processibility and possibility of flexible solar cells. However, relatively narrow absorption spectrum of donor polymer is one of the major limitations of PSCs. In this study, we introduced different band gap polymer compared with donor polymer in active layer to overcome limitation. This structure called ternary bulk heterojunction can occur energy transfer because emission spectrum of donor polymer and absorption spectrum of another polymer are overlapped. PSCs were fabricated with energy transfer polymer forming ternary bulk heterojunction structure and control device. Consequently, absorption spectrum of active layer was expended and the photovoltaic performance of ternary bulk heterojunction solar cells was enhanced. |
