10.1021/acsaem.8b00453.s002
Xiaofeng Chen
Xiaofeng
Chen
Mingzhi Zhao
Mingzhi
Zhao
Zhi-guo Zhang
Zhi-guo
Zhang
Yongfang Li
Yongfang
Li
Xiaoyu Li
Xiaoyu
Li
Haiqiao Wang
Haiqiao
Wang
High-Efficiency
All Polymer Solar Cell with a Low Voltage Loss of 0.56 V
American Chemical Society
2018
power conversion efficiencies
polymer PBDT-DFQX 1
PBDT-DFQX 1
V loss value
SMA
PCE
voltage loss
acceptor
photovoltaic device application
0.56 V
Polymer Solar Cell
efficiency
O-IDTBR
polymer donor material
PSC
Low Voltage Loss
V loss values
APSC
2018-05-09 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/High-Efficiency_All_Polymer_Solar_Cell_with_a_Low_Voltage_Loss_of_0_56_V/6269792
Reducing voltage
loss, namely, <i>V</i><sub>loss</sub>, has been demonstrated
to be an effective way to improve the efficiencies of photovoltaic
devices, and power conversion efficiencies (PCEs) exceeding 10% have
been reported in non-fullerene based polymer solar cells (PSCs) with <i>V</i><sub>loss</sub> value lower than 0.6 V. However, for all
polymer solar cells (APSCs), the PCEs lag far behind the non-fullerene
PSCs with organic small molecular acceptors. And there have been no
successful examples of high-efficiency APSCs along with low <i>V</i><sub>loss</sub> values so far. Here, we reported APSCs
that demonstrated a high efficiency of 6.66% simultaneously with a
small voltage loss of 0.56 V by using a new polymer PBDT-DFQX1 as
donor and N2200 as acceptor. Notably, when PBDT-DFQX1 is combined
with a small molecular acceptor (SMA) O-IDTBR, the relative SMA based
PSC exhibited a higher PCE of 8.76% also with a low voltage loss of
0.56 V. These results indicated that PBDT-DFQX1 would be a promising
polymer donor material in photovoltaic device application, and the
strategy by minimizing the voltage loss to improve the photovoltaic
efficiencies is still valid for APSCs.