TY - JOUR
T1 - The study of solvent additive effects in efficient polymer photovoltaics via impedance spectroscopy
AU - Yao, En Ping
AU - Chen, Chun Chao
AU - Gao, Jing
AU - Liu, Yongsheng
AU - Chen, Qi
AU - Cai, Min
AU - Hsu, Wei Chou
AU - Hong, Ziruo
AU - Li, Gang
AU - Yang, Yang
PY - 2014/11
Y1 - 2014/11
N2 - 1, 8-Diiodooctane (DIO) has been known for its role of improving the polymer morphology and enhancing performance of polymer bulk heterojunction (BHJ) solar cell. In this work, the impedance spectroscopy was used to investigate the interface of poly(4,8-bis-alkyloxybenzo(1,2-b:4,5-b′) dithiophene-2,6-diyl-alt- (alkyl thieno(3,4-b) thiophene-2-carboxylate)-2,6- diyl) (PBDTTT-C):PC70BM in BHJ with DIO as additive. Based on our results, we were able to simulate the device into an equivalent circuit model, which allows us to conveniently analyze the organic/organic interfacial contact in the organic photovoltaic (OPV) device. Thus, we demonstrate that the impedance spectroscopy can an effective approach in characterizing the donor/acceptor interfaces, such that a direct correlation can be established between the morphology and the device performance of BHJ devices.
AB - 1, 8-Diiodooctane (DIO) has been known for its role of improving the polymer morphology and enhancing performance of polymer bulk heterojunction (BHJ) solar cell. In this work, the impedance spectroscopy was used to investigate the interface of poly(4,8-bis-alkyloxybenzo(1,2-b:4,5-b′) dithiophene-2,6-diyl-alt- (alkyl thieno(3,4-b) thiophene-2-carboxylate)-2,6- diyl) (PBDTTT-C):PC70BM in BHJ with DIO as additive. Based on our results, we were able to simulate the device into an equivalent circuit model, which allows us to conveniently analyze the organic/organic interfacial contact in the organic photovoltaic (OPV) device. Thus, we demonstrate that the impedance spectroscopy can an effective approach in characterizing the donor/acceptor interfaces, such that a direct correlation can be established between the morphology and the device performance of BHJ devices.
KW - Bulk heterojuction
KW - Impedance spectroscopy
KW - Interface
KW - OPV
UR - http://www.scopus.com/inward/record.url?scp=84904325957&partnerID=8YFLogxK
U2 - 10.1016/j.solmat.2014.05.049
DO - 10.1016/j.solmat.2014.05.049
M3 - Article
AN - SCOPUS:84904325957
SN - 0927-0248
VL - 130
SP - 20
EP - 26
JO - Solar Energy Materials and Solar Cells
JF - Solar Energy Materials and Solar Cells
ER -
