Synthesis and Photovoltaic Properties of Donor−Acceptor Copolymers Based on 5,8-Dithien-2-yl-2,3-diphenylquinoxaline

Synthesis and Photovoltaic Properties of Donor−Acceptor Copolymers Based on 5,8-Dithien-2-yl-2,3-diphenylquinoxaline
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DOI:
10.1021/cm101677x
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发表时间:
2010-08
影响因子:
8.6
通讯作者:
Erjun Zhou;Junzi Cong;K. Tajima;K. Hashimoto
Erjun Zhou;Junzi Cong;K. Tajima;K. Hashimoto
中科院分区:
材料科学2区
文献类型:
--
作者:
Erjun Zhou;Junzi Cong;K. Tajima;K. Hashimoto

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合成了4种D-A型共聚物,即聚{9,9-二辛基芴-2,7-二基-alt-5,8-二噻吩-2-基-2,3-二苯基喹喔啉-5 ′,5 ′′-二基}(PF-DTQx)、聚{N-[1-(2-甲基-2-苯基)噻吩-2-基](PF-DTQx)、聚{N-[1-(2-甲基-2-苯基)噻吩-2-基](PF-DTQx)和聚{N-[1-甲基-2-苯基]噻吩-2-基}(PF-DTQx)。(2′-乙基己基)-3-乙基庚基]咔唑-2,7-二基-alt-5,8-二噻吩-2-基-2,3-二苯基喹喔啉-5 ′,5 ′′-二基}(PC-DTQx),聚{5,11-二通过Suzuki或Stille偶联反应合成了(1-癸基十一烷基)吲哚并[3,2-B]咔唑-3,9-二基-alt-5,8-二噻吩-2-基-2,3-二苯基喹喔啉-5 ′,5 ′′-二基}(PIC-DTQx)和聚{N-[1-(2′-乙基己基)-3-乙基庚基]-二噻吩并[3,2-B:2′,3 ′-d]吡咯-2,6-二基-alt-5,8-二噻吩-2-基-2,3-二苯基喹喔啉-5 ′,5 ′′-二基}(PDTP-DTQx)。通过改变给体链段,这些基于5,8-二噻吩-2-基-2,3-二苯基喹喔啉(DTQx)的聚合物的带隙和能级可以被精细地调节。PDTP-DTQx的禁带宽度为1.56 eV,吸收边扩展到770 nm。我们研究了基于这些共聚物作为电子给体材料的本体异质结型聚合物太阳能电池(PSC),[6,6...
Four donor−acceptor (D−A) type copolymers, namely, poly{9,9-dioctylfluorene-2,7-diyl-alt-5,8-dithien-2-yl-2,3-diphenylquinoxaline-5′,5′′-diyl} (PF-DTQx), poly{N-[1-(2′-ethylhexyl)-3-ethylheptanyl]carbazole-2,7-diyl-alt-5,8-dithien-2-yl-2,3-diphenylquinoxaline-5′,5′′-diyl} (PC-DTQx), poly{5,11-di(1-decylundecyl)indolo[3,2-b]carbazole-3,9-diyl-alt-5,8-dithien-2-yl-2,3-diphenylquinoxaline-5′,5′′-diyl} (PIC-DTQx), and poly{N-[1-(2′-ethylhexyl)-3-ethylheptanyl]-dithieno[3,2-b:2′,3′-d]pyrrole-2,6-diyl-alt-5,8-dithien-2-yl-2,3-diphenylquinoxaline-5′,5′′-diyl} (PDTP-DTQx), were synthesized by Suzuki or Stille coupling reactions. By changing the donor segment, the band gaps and energy levels of these 5,8-dithien-2-yl-2,3-diphenylquinoxaline (DTQx)-based polymers could be finely tuned. PDTP-DTQx exhibited the narrowest band gap of 1.56 eV and the absorption edge extended to 770 nm. We investigated bulk heterojunction type polymer solar cells (PSCs) based on these copolymers as the electron donor materials, and [6,6...