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  • 09월 12일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제110회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Photovoltaic Performance of Conjugated Copolymers Utilizing Dimethyl-benzimidazole for Solar Cells

2012년 8월 30일 14시 27분 04초
ORGN.P-1009 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 17일 (수요일) 16:00~19:00
저자 및
심주영, 송수희, 박혜지, 진영읍1, 서홍석
부산대학교 화학과, Korea
1부경대학교 공업화학과, Korea
Polymer solar cells (PSCs) are the most suitable for roll-to-roll and flexible cells because organic-based photoactive materials can be coated or printed on lightweight plastic foil to achieve good conformal flexibility. Successful approaches to leading low bandgap (LBG) polymers include the incorporation of electron-rich donor and electron-deficient acceptor segments along the conjugated polymer backbone. Planarization of polyaromatic system facilitates the π -electron delocalization and extends the effective conjugation length, providing another effective way to decrease the optical bandgap. Organic photovoltaics (OPVs) device utilizing a new type of acceptor, 2,2-dimethyl-2H-benzimidazole, show the absorption range with the wider extention of the solar spectrum, these donor-acceptor conjugated polymers were synthesized by the Stille coupling reaction. The solid films of PCPPDTMBIs show absorption bands with two maximum peaks at about 408 ~ 417 and 613 ~ 640 nm. The PCPPBBTMBIs show two maximum peaks at about 440 ~ 444 and 627 ~ 650 nm which are red-shifted about 5 ~ 30 nm as compared to PCPPDTMBIs caused by the introduction of bithiophene units. The bulk heterojunction photovoltaic device using PCPPBBTMBIs as the p-type material delivered a promising efficiency of 0.21 ~ 0.46% with an enhanced a Voc value of 0.82 V, Jsc value of 1.42 ~ 2.12 mA/cm2, and a FF of 0.26 ~ 0.34.