| 학회 | 한국공업화학회 |
| 학술대회 | 2015년 가을 (11/04 ~ 11/06, 제주국제컨벤션센터(ICCJEJU)) |
| 권호 | 19권 2호 |
| 발표분야 | 고분자_포스터 |
| 제목 | Synthesis and charaterization of highly stable copolymer for polymer solar cells. |
| 초록 | Polymer solar cells (PSCs) have attracted considerable attention as renewable energy sources due to their unique advantages such as low cost, light weight, and the likelihood that they could be flexible even when manufactured at large area. To date, the most promising PSCs require bulkheterojunction (BHJ)-type photoactive layers, typically consisting of a low band gap conjugated polymer and a fullerene derivative. Advances in PSC performance have resulted mainly from the development of new low band gap (LBG)polymers. LBG polymers should have low optical band gaps to harvest photons from a broad spectrum of solar light. A second requirement is a lowest unoccupied molecular orbital (LUMO) energy level that ensures exciton dissociation at the polymer/fullerene interface and a deep highest occupied molecular orbital (HOMO) energy level that affords high open-circuit voltage (Voc) and stability. Lastly, high carrier mobility is beneficial for efficient charge collection. It is important to develop new donor (D)−acceptor (A) type low band gap polymers for highly stable polymer solar cells (PSCs). Here, we describe the synthesis and photovoltaic properties of two D−A type low band gap polymers. The polymer is quite flat, resulting in a highly crystalline film. In contrast, the polymer is highly twisted to yield an amorphous film. This work suggests that designing highly conjugated planar backboned polymers is crucial to improve not only the photovoltaic performance but also the stability of PSCs. |
| 저자 | 김윤희1, 김봉수2, 주상용2, 손해정2, 윤영운2, 윤희준1, 신나라3, 이지상1 |
| 소속 | 1경상대, 2KIST, 3KIST / 연세대 |
| 키워드 | Doner-acceptor; Polymer Solar Cells; bulkheterojunction |
