Charge Separation and Recombination of Charge-Transfer Excitons in Donor–Acceptor Polymer Solar Cells

2013 ◽  
Vol 117 (33) ◽  
pp. 16769-16773 ◽  
Author(s):  
Jun’ya Tsutsumi ◽  
Hiroyuki Matsuzaki ◽  
Naoyuki Kanai ◽  
Toshikazu Yamada ◽  
Tatsuo Hasegawa
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Charge Separation ◽  
Polymer Solar Cells ◽  
Donor Acceptor ◽  
Charge Transfer Excitons

Formation of relaxed charge-transfer excitons in donor–acceptor-type polymer solar cells

2014 ◽  
Vol 53 (5S3) ◽  
pp. 05HB12 ◽  
Author(s):  
Jun’ya Tsutsumi ◽  
Hiroyuki Matsuzaki ◽  
Naoyuki Kanai ◽  
Toshikazu Yamada ◽  
Tatsuo Hasegawa
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Polymer Solar Cells ◽  
Donor Acceptor ◽  
Charge Transfer Excitons

Thermally assisted charge transfer and charge separation in organic donor–acceptor solar cells

2020 ◽  
Vol 117 (16) ◽  
pp. 163301
Author(s):  
Teng Gao ◽  
Qiuxia Lu ◽  
Wei Qin ◽  
Fanyao Qu ◽  
Shijie Xie
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Charge Separation ◽  
Donor Acceptor

scholarly journals Long-lived and disorder-free charge transfer states enable endothermic charge separation in efficient non-fullerene organic solar cells

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Ture F. Hinrichsen ◽  
Christopher C. S. Chan ◽  
Chao Ma ◽  
David Paleček ◽  
Alexander Gillett ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Organic Solar Cells ◽  
Charge Separation ◽  
Free Charge ◽  
Charge Generation ◽  
Time Resolved ◽  
Thermodynamic Conditions ◽  
Donor Acceptor ◽  
Interfacial Charge

Abstract Organic solar cells based on non-fullerene acceptors can show high charge generation yields despite near-zero donor–acceptor energy offsets to drive charge separation and overcome the mutual Coulomb attraction between electron and hole. Here, we use time-resolved optical spectroscopy to show that free charges in these systems are generated by thermally activated dissociation of interfacial charge-transfer states that occurs over hundreds of picoseconds at room temperature, three orders of magnitude slower than comparable fullerene-based systems. Upon free electron–hole encounters at later times, both charge-transfer states and emissive excitons are regenerated, thus setting up an equilibrium between excitons, charge-transfer states and free charges. Our results suggest that the formation of long-lived and disorder-free charge-transfer states in these systems enables them to operate closely to quasi-thermodynamic conditions with no requirement for energy offsets to drive interfacial charge separation and achieve suppressed non-radiative recombination.

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

Photoinduced Charge Transfer in Donor–Acceptor (DA) Copolymer: Fullerene Bis-adduct Polymer Solar Cells

2013 ◽  
Vol 5 (3) ◽  
pp. 861-868 ◽  
Author(s):  
Tae Eui Kang ◽  
Han-Hee Cho ◽  
Chul-Hee Cho ◽  
Ki-Hyun Kim ◽  
Hyunbum Kang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Polymer Solar Cells ◽  
Photoinduced Charge Transfer ◽  
Donor Acceptor ◽  
Photoinduced Charge

Hot charge-transfer excitons set the time limit for charge separation at donor/acceptor interfaces in organic photovoltaics

2012 ◽  
Vol 12 (1) ◽  
pp. 66-73 ◽  
Author(s):  
Askat E. Jailaubekov ◽  
Adam P. Willard ◽  
John R. Tritsch ◽  
Wai-Lun Chan ◽  
Na Sai ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Organic Photovoltaics ◽  
Charge Separation ◽  
Time Limit ◽  
Donor Acceptor ◽  
Charge Transfer Excitons

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
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