TY - JOUR
T1 - Manipulating backbone structure with various conjugated spacers to enhance photovoltaic performance of D-A-type two-dimensional copolymers
AU - Dang, Dongfeng
AU - Xiao, Manjun
AU - Zhou, Pei
AU - Shi, Junwei
AU - Tao, Qiang
AU - Tan, Hua
AU - Wang, Yafei
AU - Bao, Xichang
AU - Liu, Yu
AU - Wang, Ergang
AU - Yang, Renqiang
AU - Zhu, Weiguo
N1 - Publisher Copyright:
© 2014 Elsevier B.V. All rights reserved.
PY - 2014/11
Y1 - 2014/11
N2 - A class of low band-gap two-dimensional conjugated polymers of PBDTT-FQ, PBDTT-TQ, PBDTT-BTQ and PBDTT-TTQ was designed and synthesized, which contains the same di(alkylthiophene)-substituted benzo[1,2-b:4,5-b′]dithiophene (BDTT) and 6,7-difluoroquinoxaline (Q) units, as well as various conjugated spacers of furan, thiophene, bithiophene and thieno[3,2-b]thiophene in the main chain. Significant effect of the varied spacers between the BDTT and Q units on the thermal, optical, electrochemical and photovoltaic properties was investigated and observed for these two-dimensional copolymers in the polymer solar cells. The maximum power conversion efficiency of 5.9% with a short circuit current of 13.7 mA/cm2and a fill factor of 0.56 was obtained for the PBDTT-TQ with thiophene spacer in the bulk hetero-junction PSCs using [6,6]-phenyl-C71-butyric acid methyl ester as acceptor.
AB - A class of low band-gap two-dimensional conjugated polymers of PBDTT-FQ, PBDTT-TQ, PBDTT-BTQ and PBDTT-TTQ was designed and synthesized, which contains the same di(alkylthiophene)-substituted benzo[1,2-b:4,5-b′]dithiophene (BDTT) and 6,7-difluoroquinoxaline (Q) units, as well as various conjugated spacers of furan, thiophene, bithiophene and thieno[3,2-b]thiophene in the main chain. Significant effect of the varied spacers between the BDTT and Q units on the thermal, optical, electrochemical and photovoltaic properties was investigated and observed for these two-dimensional copolymers in the polymer solar cells. The maximum power conversion efficiency of 5.9% with a short circuit current of 13.7 mA/cm2and a fill factor of 0.56 was obtained for the PBDTT-TQ with thiophene spacer in the bulk hetero-junction PSCs using [6,6]-phenyl-C71-butyric acid methyl ester as acceptor.
KW - Conjugated spacers
KW - Photovoltaic properties
KW - Polymer solar cells
KW - Two-dimensional copolymers
UR - https://www.scopus.com/pages/publications/84907219328
U2 - 10.1016/j.orgel.2014.08.022
DO - 10.1016/j.orgel.2014.08.022
M3 - 文章
AN - SCOPUS:84907219328
SN - 1566-1199
VL - 15
SP - 2876
EP - 2884
JO - Organic Electronics
JF - Organic Electronics
IS - 11
ER -
