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  발표분야
고분자구조 및 물성
  발표구분
포스터발표Poster presentation
  발표장치
Poster
  제목
End-group Effect of Spirobifluorene-based Non-fullerene Acceptors for the Environmentally Benign Process
  공동저자
  • 홍광표 (경상국립대학교, -, 회원)
  • 성민재 (경상국립대학교, 비회원)
  • 박병욱 (광주과학기술원, 비회원)
  • 최지영 (경상국립대학교, 비회원)
  • 김제한 (포항가속기연구소, 비회원)
  • Cheng Sun (경상국립대학교, 비회원)
  • 강홍규 (광주과학기술원, 비회원)
  • 권순철 (광주과학기술원, 비회원)
  • 장수영 (광주과학기술원, 비회원)
  • 김윤희 (경상국립대학교, 회원)
  • 이광희 (광주과학기술원, 회원)
  • 권순기 (경상국립대학교, 회원)
  발표자
홍광표 (경상국립대학교 , Email: hg****@na*******, 전화:
  연구책임자
김윤희 (경상국립대학교 , Email: yk**@gn*******, 전화: *********5296
  키워드
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  우수논문발표상
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  발표자료 수집·활용에 대한 동의서
본인은 학회 기간 동안 발표자료 수집 및 (동)영상 저장과 송출에 대하여 동의합니다.
End-group Effect of Spirobifluorene-based Non-fullerene Acceptors for the Environmentally Benign Process
홍광표, 성민재, 박병욱1, 최지영, 김제한2, Cheng Sun, 강홍규1, 권순철1, 장수영1, 김윤희, 이광희1, 권순기
경상국립대학교; 1광주과학기술원; 2포항가속기연구소
Spirobifluorene based non-fullerene acceptors (NFAs) having meta-ethylhexyl oxy (m-OEh) substituents (PBDB-T: spiro-bridged NFAs) were synthesized. The orthogonal molecular structure of the m-OEh-substituted spirobifluorene with different end groups provided high solubility and kept the stable morphology between donor-acceptor. Organic Photovoltaic (OPV) device performance was not significantly affected by switching the processing solvent from a chlorinated solvent to an environmentally benign solvent, because suitable morphology and crystallinity were retained. The ITO/ZnO/PBDB-T:spiro-bridged NFA/MoOx/Ag OPV devices prepared using a chlorobenzene as the processing solvent displayed maximum efficiency in the range of 6.44–5.78%, while the devices made using xylene as the processing solvent had a lower maximum efficiency ranging from 6.14–4.66%. The OPV performance of the devices made using chlorobenzene decreased in the order of sp-mOEh-ITIC > sp-mOEh-ITIC-M > sp-mOEh-ITIC-F > sp-mOEh-ITIC-Cl because an electron donating end group increased open-circuit voltage (Voc), while the electron withdrawing end group increased the short-circuit current density (Jsc). Although the OPV performance of the four spiro-bridged derivatives by xylene was showed to be similar order of that by chlorobenzene solvent processing, the efficiency drop from chlorobenzene solvent to xylene solvent showed following order sp-mOEh-ITIC < sp-mOEh-ITIC-M < sp-mOEh-ITIC-F < sp-mOEh-ITIC-Cl, which depended on the polarity effect of end groups.
Keywords: -