High Performance All-Polymer Solar Cells by Synergistic Effects of Fine-Tuned Crystallinity and Solvent Annealing
Li, Zhaojun ; Xu, Xiaofeng ; Zhang, Wei LU ; Meng, Xiangyi ; Ma, Wei ; Yartsev, Arkady LU
; Inganäs, Olle
; Andersson, Mats R.
; Janssen, René A J
and Wang, Ergang
(2016)
In Journal of the American Chemical Society
138(34).
p.10935-10944
- Abstract
Growing interests have been devoted to the design of polymer acceptors as potential replacement for fullerene derivatives for high-performance all polymer solar cells (all-PSCs). One key factor that is limiting the efficiency of all-PSCs is the low fill factor (FF) (normally <0.65), which is strongly correlated with the mobility and film morphology of polymer:polymer blends. In this work, we find a facile method to modulate the crystallinity of the well-known naphthalene diimide (NDI) based polymer N2200, by replacing a certain amount of bithiophene (2T) units in the N2200 backbone by single thiophene (T) units and synthesizing a series of random polymers PNDI-Tx, where x is the percentage of the single T. The acceptor PNDI-T10 is... (More)
Growing interests have been devoted to the design of polymer acceptors as potential replacement for fullerene derivatives for high-performance all polymer solar cells (all-PSCs). One key factor that is limiting the efficiency of all-PSCs is the low fill factor (FF) (normally <0.65), which is strongly correlated with the mobility and film morphology of polymer:polymer blends. In this work, we find a facile method to modulate the crystallinity of the well-known naphthalene diimide (NDI) based polymer N2200, by replacing a certain amount of bithiophene (2T) units in the N2200 backbone by single thiophene (T) units and synthesizing a series of random polymers PNDI-Tx, where x is the percentage of the single T. The acceptor PNDI-T10 is properly miscible with the low band gap donor polymer PTB7-Th, and the nanostructured blend promotes efficient exciton dissociation and charge transport. Solvent annealing (SA) enables higher hole and electron mobilities, and further suppresses the bimolecular recombination. As expected, the PTB7-Th:PNDI-T10 solar cells attain a high PCE of 7.6%, which is a 2-fold increase compared to that of PTB7-Th:N2200 solar cells. The FF of 0.71 reaches the highest value among all-PSCs to date. Our work demonstrates a rational design for fine-tuned crystallinity of polymer acceptors, and reveals the high potential of all-PSCs through structure and morphology engineering of semicrystalline polymer:polymer blends.
(Less)
- author
- Li, Zhaojun
; Xu, Xiaofeng
; Zhang, Wei
LU
; Meng, Xiangyi
; Ma, Wei
; Yartsev, Arkady
LU
; Inganäs, Olle
; Andersson, Mats R.
; Janssen, René A J
and Wang, Ergang
- organization
- publishing date
- 2016-08-31
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of the American Chemical Society
- volume
- 138
- issue
- 34
- pages
- 10 pages
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- pmid:27479751
- wos:000382513300043
- scopus:84984783389
- ISSN
- 0002-7863
- DOI
- 10.1021/jacs.6b04822
- language
- English
- LU publication?
- yes
- id
- 40f8047b-5124-4d3c-8094-35efea94eeb0
- date added to LUP
- 2016-11-30 09:18:20
- date last changed
- 2025-01-12 16:03:15
@article{40f8047b-5124-4d3c-8094-35efea94eeb0,
abstract = {{<p>Growing interests have been devoted to the design of polymer acceptors as potential replacement for fullerene derivatives for high-performance all polymer solar cells (all-PSCs). One key factor that is limiting the efficiency of all-PSCs is the low fill factor (FF) (normally <0.65), which is strongly correlated with the mobility and film morphology of polymer:polymer blends. In this work, we find a facile method to modulate the crystallinity of the well-known naphthalene diimide (NDI) based polymer N2200, by replacing a certain amount of bithiophene (2T) units in the N2200 backbone by single thiophene (T) units and synthesizing a series of random polymers PNDI-Tx, where x is the percentage of the single T. The acceptor PNDI-T10 is properly miscible with the low band gap donor polymer PTB7-Th, and the nanostructured blend promotes efficient exciton dissociation and charge transport. Solvent annealing (SA) enables higher hole and electron mobilities, and further suppresses the bimolecular recombination. As expected, the PTB7-Th:PNDI-T10 solar cells attain a high PCE of 7.6%, which is a 2-fold increase compared to that of PTB7-Th:N2200 solar cells. The FF of 0.71 reaches the highest value among all-PSCs to date. Our work demonstrates a rational design for fine-tuned crystallinity of polymer acceptors, and reveals the high potential of all-PSCs through structure and morphology engineering of semicrystalline polymer:polymer blends.</p>}},
author = {{Li, Zhaojun and Xu, Xiaofeng and Zhang, Wei and Meng, Xiangyi and Ma, Wei and Yartsev, Arkady and Inganäs, Olle and Andersson, Mats R. and Janssen, René A J and Wang, Ergang}},
issn = {{0002-7863}},
language = {{eng}},
month = {{08}},
number = {{34}},
pages = {{10935--10944}},
publisher = {{The American Chemical Society (ACS)}},
series = {{Journal of the American Chemical Society}},
title = {{High Performance All-Polymer Solar Cells by Synergistic Effects of Fine-Tuned Crystallinity and Solvent Annealing}},
url = {{http://dx.doi.org/10.1021/jacs.6b04822}},
doi = {{10.1021/jacs.6b04822}},
volume = {{138}},
year = {{2016}},
}