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  • 02월 20일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제113회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Photovoltaics Properties of BTI Based D-A Polymers for High Performance Polymer Solar cells

2014년 2월 13일 16시 12분 26초
ORGN.P-780 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
4월 16일 (수요일) 16:00~19:00
저자 및
백지연, 서홍석1,*, 김주애2
부산대학교 자연과학대학/화학과, Korea
1부산대학교 화학과, Korea
2부산대학교 화학관 427호, Korea
Solution-processed bulk-heterojunction organic solar cells (BHJ OSCs) have substantially potential because of their high internal quantum efficiency and large-scale printing technique. The interest in solution-processable small molecular p-conjugated organic donors has been accelerating for BHJ photovoltaic applications in recent years, owing to the advantages of definite structure, facile purification, high purity and good photovoltaic performance reproduction. To develop innovative materials, novel computationally aided design strategy was made through the development of a new class of electron-transporting polymers by incorporating highly tailorable solubilizing groups into an electron-deficient core based upon the N-alkyl-2,2′-bithiophene-3,3′-dicarboximide unit (BTI). In comparison to other acceptor units, BTI units have the advantage of decreased steric encumberance achieved by placing the imide group at the center of BTI unit. The spectra of HS-5456 and HS-5467 solid films show absorption bands with maximum peaks at 368, 495 and 397, 517 nm corresponding to band gaps of 2.07 and 1.97 eV, respectively. The best device with HS-5456: PC71BM ratio of 1:3 showed a VOC of 0.91 V, a JSC of 3.93 mA/cm2, and a FF of 0.38, which yielded PCE of 1.36%. The highest PCE of HS-5457:PC71PM ratio of 1:4 showed solar cells reaches 1.08% with a VOC of 0.80 V, a JSC of 3.79 mA/cm2, and a FF of 0.36.