All-polymer bulk heterojunction solar cells with high fill factors based on blends of poly-3-hexylthiophene: poly(perylene diimide-alt-terthiophene)

2012 ◽  
Vol 1390 ◽  
Author(s):  
Dariusz Kotowski ◽  
Erika Kozma ◽  
Marinella Catellani ◽  
Silvia Luzzati

ABSTRACTThe photovoltaic characteristics of all polymer bulk heterojunction solar cells made of P3HT and a perylene diimide-based copolymer (PEK3) have been studied. Thermal annealing is needed to improve the performances. Annealing optimization induces an enhancement of the power conversion efficiency from 0.06 to 1%, Jsc from 0.24 to 2.9 mA/cm2 and FF from 0.32 to 0.59. The origin of such improvements has been investigated by studying the P3HT:PEK3 blend morphology, by means of absorption and emission spectroscopy and charge transport, from single carrier measurements on P3HT:PEK3 diodes. Upon annealing we have observed an increase in phase segregation and a 100-fold enhancement of the hole and electron mobilities, that favor the dissociation of bound electron-hole pairs and their transport to the electrodes. This explains the high FF of the annealed P3HT:PEK3 solar cell.

2016 ◽  
Vol 128 (42) ◽  
pp. 13190-13194 ◽  
Author(s):  
Shengjian Liu ◽  
Zhipeng Kan ◽  
Simil Thomas ◽  
Federico Cruciani ◽  
Jean-Luc Brédas ◽  
...  

2019 ◽  
Author(s):  
Ahmed Balawi ◽  
Zhipeng Kan ◽  
Julien Gorenflot ◽  
Neha Chaturvedi ◽  
Shengjian Liu ◽  
...  

2019 ◽  
pp. 1900029
Author(s):  
Federico Cruciani ◽  
Maxime Babics ◽  
Shengjian Liu ◽  
Daniela Carja ◽  
Daniele Mantione ◽  
...  

RSC Advances ◽  
2019 ◽  
Vol 9 (65) ◽  
pp. 37714-37723 ◽  
Author(s):  
Soyeon Kim ◽  
Jaehoon Jeong ◽  
Quoc Viet Hoang ◽  
Joo Won Han ◽  
Adi Prasetio ◽  
...  

The role of cation and anion dopant incorporated into a ZnO layer was systematically investigated. We found that the work function was changed to favor electronic extraction only with Cl anion, while the conductivity change depended on the cation.


2013 ◽  
Vol 7 (6) ◽  
pp. 479-485 ◽  
Author(s):  
Jing-Shun Huang ◽  
Tenghooi Goh ◽  
Xiaokai Li ◽  
Matthew Y. Sfeir ◽  
Elizabeth A. Bielinski ◽  
...  

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