TY - JOUR
T1 - Enhanced performance of polymer solar cells through sensitization by a narrow band gap polymer
AU - An, Qiaoshi
AU - Zhang, Fujun
AU - Zhang, Jian
AU - Tang, Weihua
AU - Wang, Zixuan
AU - Li, Lingliang
AU - Xu, Zheng
AU - Teng, Feng
AU - Wang, Yongsheng
PY - 2013
Y1 - 2013
N2 - The performance of polymer solar cells (PSCs), based on poly(3-hexylthiophene) (P3HT) and [6,6]phenyl-C71-butyric acid methyl ester (PC71BM), were improved by adding poly[(4,8-bis-(2- ethylhexyloxy)-benzo[1,2-b:4,5-b′](dithiophene)-2,6-diyl-alt-(4-(2- ethylhexanoyl)-thieno[3,4-b]thiophene)-2,6-diyl] (PBDTTT-C). The absorption region of the ternary blend films is extended into near infrared region (NIR). Power conversion efficiency (PCE) of the ternary blend PSCs is improved to 2.48% with 6% PBDTTT-C, which is 27% higher than the binary blend PSCs. The dominant mechanism for the PCE improvement could be attributed to the well balance between photon harvest and charge carrier transport by doping proper concentration PBDTTT-C. The energy transfer or charge carrier transfer directly between P3HT and PBDTTT-C was investigated, which are found to be positive for the performance improvement of ternary blend PSCs.
AB - The performance of polymer solar cells (PSCs), based on poly(3-hexylthiophene) (P3HT) and [6,6]phenyl-C71-butyric acid methyl ester (PC71BM), were improved by adding poly[(4,8-bis-(2- ethylhexyloxy)-benzo[1,2-b:4,5-b′](dithiophene)-2,6-diyl-alt-(4-(2- ethylhexanoyl)-thieno[3,4-b]thiophene)-2,6-diyl] (PBDTTT-C). The absorption region of the ternary blend films is extended into near infrared region (NIR). Power conversion efficiency (PCE) of the ternary blend PSCs is improved to 2.48% with 6% PBDTTT-C, which is 27% higher than the binary blend PSCs. The dominant mechanism for the PCE improvement could be attributed to the well balance between photon harvest and charge carrier transport by doping proper concentration PBDTTT-C. The energy transfer or charge carrier transfer directly between P3HT and PBDTTT-C was investigated, which are found to be positive for the performance improvement of ternary blend PSCs.
KW - Narrow band gap polymer
KW - Polymer solar cells
KW - Power conversion efficiency
KW - Ternary blend films
UR - http://www.scopus.com/inward/record.url?scp=84883384413&partnerID=8YFLogxK
U2 - 10.1016/j.solmat.2013.07.050
DO - 10.1016/j.solmat.2013.07.050
M3 - Article
AN - SCOPUS:84883384413
SN - 0927-0248
VL - 118
SP - 30
EP - 35
JO - Solar Energy Materials and Solar Cells
JF - Solar Energy Materials and Solar Cells
ER -
