Ultrafast spectroscopic studies in polyfluorene: [6,6]-phenyl C61-butyric acid methyl ester blend films: monitoring the photoinduced charge transfer process

2004 ◽  
Vol 16 (45) ◽  
pp. 8105-8116 ◽  
Author(s):  
Roberto Pacios ◽  
Jenny Nelson ◽  
Donal D C Bradley ◽  
Tersilla Virgili ◽  
Guglielmo Lanzani ◽  
...  
2016 ◽  
Vol 4 (9) ◽  
pp. 3335-3341 ◽  
Author(s):  
Yufei Zhong ◽  
Kaori Suzuki ◽  
Daishi Inoue ◽  
Daisuke Hashizume ◽  
Seiichiro Izawa ◽  
...  

Nanorod-shaped crystals of PCBM grew in polymer blend films from the interface of pre-crystallized PCBM films.


2009 ◽  
pp. 10000 ◽  
Author(s):  
Jessica J. Benson-Smith ◽  
Hideo Ohkita ◽  
Steffan Cook ◽  
James R. Durrant ◽  
Donal D. C. Bradley ◽  
...  

2013 ◽  
Vol 117 (12) ◽  
pp. 6039-6048 ◽  
Author(s):  
Domantas Peckus ◽  
Andrius Devižis ◽  
Ramu̅nas Augulis ◽  
Steven Graf ◽  
Dirk Hertel ◽  
...  

2014 ◽  
Vol 136 (19) ◽  
pp. 6952-6959 ◽  
Author(s):  
Ala’a O. El-Ballouli ◽  
Erkki Alarousu ◽  
Marco Bernardi ◽  
Shawkat M. Aly ◽  
Alec P. Lagrow ◽  
...  

2013 ◽  
Vol 46 (3) ◽  
pp. 1212-1220 ◽  
Author(s):  
Guangmin Wei ◽  
Dongdong Yao ◽  
Zhiyong Li ◽  
Ye Huang ◽  
He Cheng ◽  
...  

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Kouhei Yonezawa ◽  
Minato Ito ◽  
Hayato Kamioka ◽  
Takeshi Yasuda ◽  
Liyuan Han ◽  
...  

Bulk heterojunction (BHJ) based on a donor (D) polymer and an acceptor (A) fullerene derivative is a promising organic photovoltaics (OPV). In order to improve the incident photon-to-current efficiency (IPCE) of the BHJ solar cell, a comprehensive understanding of the ultrafast dynamics of excited species, such as singlet exciton (D*), interfacial charge-transfer (CT) state, and carrier (D+), is indispensable. Here, we performed femtosecond time-resolved spectroscopy of two prototypical BHJ blend films: poly(3-hexylthiophene) (P3HT)/[6,6]-phenyl C61-butyric acid methyl ester (PCBM) blend film and poly(9,9′-dioctylfluorene-co-bithiophene) (F8T2)/[6,6]-phenyl C71-butyric acid methyl ester (PC70BM) blend film. We decomposed differential absorption spectra into fast, slow, and constant components via two-exponential fitting at respective probe photon energies. The decomposition procedure clearly distinguished photoinduced absorptions (PIAs) due to D*, CT, and D+. Based on these assignments, we will compare the charge dynamics between the F8T2/PC70BM and P3HT/PCBM blend films.


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