화학공학소재연구정보센터
학회 한국공업화학회
학술대회 2015년 가을 (11/04 ~ 11/06, 제주국제컨벤션센터(ICCJEJU))
권호 19권 2호
발표분야 에너지저장변환_포스터
제목 Photovoltaic properties of diketopyrrolopyrrole-based low band gap donors for solution-processed organic solar cells
초록 This study involves the development of two new small molecules comprising a diketopyrrolopyrrole (DPP) core flanked with donor units of triphenylamine (TPA-DPP-TPA) and fluorine (FL-DPP-FL) for application in bulk heterojunction (BHJ) solution processed organic solar cells (OSCs). The FL-DPP-FL/PC71BM exhibited power conversion efficiency (PCE) of 1.73% with Jsc of 5.03 mA/cm2, Voc of 0.87 V and FF of 0.39, while TPA-DPP-TPA/PC71BM showed a relatively lower PCE of 1.45% with Jsc of 5.58 mA/cm2, Voc of 0.77 V and FF of 0.34. The morphological studies reveal that the enhancement in device performance of FL-DPP-FL is mainly attributed to the improved nanoscale film morphology of the FL-DPP-FL/PC71BM blend, which promoted the formation of smaller domains and greater donor–acceptor interpenetrated networks within the active layer.
저자 이수형, Sushil Bagde, 양선남, 박한옥, 한장군
소속 전북대
키워드 small molecule; low band gap; organic solar cell
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