摘要
A series of P3HT：PC71BM polymer solar cells （PSCs） with different PIDTDTQx doping concentrations were fabricated to in- vestigate the effect of the PIDTDTQx as a complementary electron donor on the performance of PSCs. The power conversion efficiency （PCE） of the optimized ternary blend PSCs （with 2 wt% PIDTDTQx） reached 3.87%, which is 28% higher than that of the PSCs based on P3HT：PCvlBM （control cells）. The short-circuit current density （J^c） was increased to 10.20 mA/cm2 compared with the control cells. The PCE improvement could be attributed to more photon harvest and charge carrier transport by appropriate doping PIDTDTQx. The energy transfer from P3HT to PIDTDTQx was demonstrated from the 650 nm emis- sion intensity decrease and the red-shifted emission peaks from 725 nm to 737 nm along with the increase of PIDTDTQx dop- ing concentrations.
A series of P3HT:PC71BM polymer solar cells(PSCs)with different PIDTDTQx doping concentrations were fabricated to investigate the effect of the PIDTDTQx as a complementary electron donor on the performance of PSCs.The power conversion efficiency(PCE)of the optimized ternary blend PSCs(with 2 wt%PIDTDTQx)reached 3.87%,which is 28%higher than that of the PSCs based on P3HT:PC71BM(control cells).The short-circuit current density(Jsc)was increased to 10.20 m A/cm2compared with the control cells.The PCE improvement could be attributed to more photon harvest and charge carrier transport by appropriate doping PIDTDTQx.The energy transfer from P3HT to PIDTDTQx was demonstrated from the 650 nm emission intensity decrease and the red-shifted emission peaks from 725 nm to 737 nm along with the increase of PIDTDTQx doping concentrations.
基金
supported by the Fundamental Research Funds for the Central Universities(Grant No.2013JBZ004)
the National Natural Science Foundation of China(Grant No.61377029)
the Beijing Natural Science Foundation(Grant No.2122050)
the State Key Laboratory of Catalysis,Chinese Academy of Sciences(Grant No.n-11-09)
