Planar Donor-acceptor Copolymers for Bulk Heterojunction Solar Cells

doi:10.3969/j.issn.0251-0790.2012.04.032

Chem. J. Chinese Universities ›› 2012, Vol. 33 ›› Issue (04): 828.doi: 10.3969/j.issn.0251-0790.2012.04.032

• Polymer Chemistry • Previous Articles Next Articles

Planar Donor-acceptor Copolymers for Bulk Heterojunction Solar Cells

QIN Rui-Ping¹, SONG Gui-Lin¹, JIANG Yu-Rong¹, BO Zhi-Shan²

1. College of Physics & Information Engineering, Key Laboratory of Photovoltaic Materials of Henan Province, Henan Normal University, Xinxiang 453007, China;
2. Institute of Polymer Chemistry & Physics, College of Chemistry, Beijing Normal University, Beijing 100875, China

Received:2011-06-15 Online:2012-04-10 Published:2012-04-10
Supported by:
河南师范大学博士科研启动基金(批准号: 051-2010)资助.

Abstract

Abstract: Two planar conjugated copolymers poly2,8-{5,11-diisooctylindolo[3,2-b]carbazole}-4,7-di[2,5-thiophene]-5,6-dioctyloxy-2,1,3-benzothiadiazole(QP-2) and poly2,8-{5,11-dioctylindolocarbazole}-4,7-di[2,5-thiophene]-5,6-dioctyloxy-2,1,3-benzothiadiazole(QP-3) with main chain donor-acceptor alternating structures were synthesized and their photophysical and photovoltaic properties were investigated. Photovoltaic cells based on polymer QP-3 gave a power conversion efficiency(PCE) of 2.59%, an open circuit voltage(V_OC) of 0.72 V, a short circuit current density(J_SC) of 9.24 mA/cm², and a fill factor(FF) of 0.38. The results show that the polymer without branched alkyl side group performs better and they have better crystallinity in solid film.

Key words: Planar conjugated polymer, Bulk-heterojunction solar cell, Photovoltaic property

CLC Number:

O633.5

TrendMD:

QIN Rui-Ping, SONG Gui-Lin, JIANG Yu-Rong, BO Zhi-Shan. Planar Donor-acceptor Copolymers for Bulk Heterojunction Solar Cells[J]. Chem. J. Chinese Universities, 2012, 33(04): 828.

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Planar Donor-acceptor Copolymers for Bulk Heterojunction Solar Cells

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