Formation of charge-transfer complexes significantly improves the performance of polymer solar cells based on PBDTTT-C-T: PC71 BM

2014 ◽  
Vol 23 (6) ◽  
pp. 783-792 ◽  
Author(s):  
Guangsheng Fu ◽  
Shaopeng Yang ◽  
Jiangbo Shi ◽  
Zhiyong Zhang ◽  
Boya Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Polymer Solar Cells ◽  
Charge Transfer Complexes

Approaches to low-bandgap polymer solar cells: Using polymer charge-transfer complexes and fullerene metallocomplexes

2008 ◽  
Vol 80 (10) ◽  
pp. 2151-2161 ◽  
Author(s):  
Sergey A. Zapunidy ◽  
Dmitry S. Martyanov ◽  
Elena M. Nechvolodova ◽  
Marina V. Tsikalova ◽  
Yuri N. Novikov ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Near Infrared ◽  
Polymer Solar Cells ◽  
Cost Effective ◽  
Visible Spectral Range ◽  
Charge Transfer Complexes ◽  
High Electron ◽  
Low Bandgap ◽  
Bandgap Materials

Polymer solar cells have shown high potential to convert solar energy into electricity in a cost-effective way. One of the basic reasons limiting the polymer solar cell efficiency is insufficient absorption of the solar radiation by the active layer that limits the photocurrent. To increase the photocurrent, one needs low-bandgap materials with strong absorption below 2 eV. In this work, we study two types of low-bandgap materials: ground-state charge-transfer complexes (CTCs) of a conjugated polymer, MEH-PPV (poly[2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylenevinylene]), and an exohedral metallocomplex of fullerene, (η2-C60)IrH(CO)[(+)DIOP] (IrC60). We demonstrate that the CTC formed between MEH-PPV and conjugated molecules with high electron affinity, namely, 2,4,7-trinitrofluorenone (TNF) and 1,5-dinitroantraquinone (DNAQ), can have strong optical absorption extending down to the near infrared. We have observed that the photoexcited CTC can generate free charges. We also report on optical studies of IrC60 as a possible acceptor for polymer/fullerene solar cells. IrC60 strongly absorbs in the visible spectral range, in particular in the red part, and therefore has a potential for increasing the photocurrent as compared with polymer/methanofullerene solar cells. Our studies of MEH-PPV/IrC60 blended films show that long-lived charges are efficiently generated at MEH-PPV upon photoexcitation of the blend.

Thermal Annealing Effect on Ultrafast Charge Transfer in All-Polymer Solar Cells with a Non-Fullerene Acceptor N2200

2017 ◽  
Vol 121 (16) ◽  
pp. 8804-8811 ◽  
Author(s):  
Feng Jin ◽  
Guanqun Ding ◽  
Yuning Wang ◽  
Jianyu Yuan ◽  
Wenping Guo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Thermal Annealing ◽  
Polymer Solar Cells ◽  
Annealing Effect ◽  
Ultrafast Charge Transfer

Charge transfer highways in polymer solar cells embedded with imprinted PEDOT:PSS gratings

RSC Advances ◽  
2014 ◽  
Vol 4 (102) ◽  
pp. 58342-58348 ◽  
Author(s):  
Chia-Te Yen ◽  
Fu-Chiao Wu ◽  
Horng-Long Cheng ◽  
Hwo-Shuenn Sheu ◽  
Fu-Ching Tang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Carrier Transport ◽  
Polymer Solar Cells ◽  
Photovoltaic Cells ◽  
Organic Photovoltaic ◽  
Organic Photovoltaic Cells

Carrier transport highways induced by nanoimprinted PEDOT:PSS gratings play important roles in the enhancement of the electrical performances of P3HT:ICBA-based organic photovoltaic cells.

Charge Transfer and Charge Separation in Conjugated Polymer Solar Cells

2010 ◽  
pp. 531-562
Author(s):  
Ian A. Howard ◽  
Neil C. Greenham ◽  
Agnese Abrusci ◽  
Richard H. Friend ◽  
Sebastian Westenhoff
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Charge Separation ◽  
Conjugated Polymer ◽  
Polymer Solar Cells
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