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8.0% Efficient All-Polymer Solar Cells with High Photovoltage of 1.1 V and Internal Quantum Efficiency near Unity

Xu, Xiaofeng; Li, Zhaojun; Zhang, Wei LU ; Meng, Xiangyi; Zou, Xianshao LU ; Di Carlo Rasi, Dario; Ma, Wei; Yartsev, Arkady LU ; Andersson, Mats R. and Janssen, René A J, et al. (2018) In Advanced Energy Materials 8(1).
Abstract

In very recent years, growing efforts have been devoted to the development of all-polymer solar cells (all-PSCs). One of the advantages of all-PSCs over the fullerene-based PSCs is the versatile design of both donor and acceptor polymers which allows the optimization of energy levels to maximize the open-circuit voltage (Voc). However, there is no successful example of all-PSCs with both high Voc over 1 V and high power conversion efficiency (PCE) up to 8% reported so far. In this work, a combination of a donor polymer poly[4,8-bis(5-(2-octylthio)thiophen-2-yl)benzo[1,2-b:4,5-b′]dithiophene-2,6-diyl-alt-(5-(2-ethylhexyl)-4H-thieno[3,4-c]pyrrole-4,6(5H)-dione)-1,3-diyl] (PBDTS-TPD) with a low-lying highest occupied... (More)

In very recent years, growing efforts have been devoted to the development of all-polymer solar cells (all-PSCs). One of the advantages of all-PSCs over the fullerene-based PSCs is the versatile design of both donor and acceptor polymers which allows the optimization of energy levels to maximize the open-circuit voltage (Voc). However, there is no successful example of all-PSCs with both high Voc over 1 V and high power conversion efficiency (PCE) up to 8% reported so far. In this work, a combination of a donor polymer poly[4,8-bis(5-(2-octylthio)thiophen-2-yl)benzo[1,2-b:4,5-b′]dithiophene-2,6-diyl-alt-(5-(2-ethylhexyl)-4H-thieno[3,4-c]pyrrole-4,6(5H)-dione)-1,3-diyl] (PBDTS-TPD) with a low-lying highest occupied molecular orbital level and an acceptor polymer poly[[N,N′-bis(2-octyldodecyl)-naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diyl]-alt-thiophene-2,5-diyl] (PNDI-T) with a high-lying lowest unoccupied molecular orbital level is used, realizing high-performance all-PSCs with simultaneously high Voc of 1.1 V and high PCE of 8.0%, and surpassing the performance of the corresponding PC71BM-based PSCs. The PBDTS-TPD:PNDI-T all-PSCs achieve a maximum internal quantum efficiency of 95% at 450 nm, which reveals that almost all the absorbed photons can be converted into free charges and collected by electrodes. This work demonstrates the advantages of all-PSCs by incorporating proper donor and acceptor polymers to boost both Voc and PCEs.

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Contribution to journal
publication status
published
subject
keywords
All-polymer solar cells, Conjugated polymers, Organic photovoltaics, Photovoltage, Quantum yield
in
Advanced Energy Materials
volume
8
issue
1
publisher
Wiley-Blackwell
external identifiers
  • scopus:85029220292
ISSN
1614-6832
DOI
10.1002/aenm.201700908
language
English
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yes
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5e74e242-d4ae-4792-ab09-dc5eaa5578c5
date added to LUP
2017-10-05 08:28:56
date last changed
2018-08-05 04:44:48
@article{5e74e242-d4ae-4792-ab09-dc5eaa5578c5,
  abstract     = {<p>In very recent years, growing efforts have been devoted to the development of all-polymer solar cells (all-PSCs). One of the advantages of all-PSCs over the fullerene-based PSCs is the versatile design of both donor and acceptor polymers which allows the optimization of energy levels to maximize the open-circuit voltage (V<sub>oc</sub>). However, there is no successful example of all-PSCs with both high V<sub>oc</sub> over 1 V and high power conversion efficiency (PCE) up to 8% reported so far. In this work, a combination of a donor polymer poly[4,8-bis(5-(2-octylthio)thiophen-2-yl)benzo[1,2-b:4,5-b′]dithiophene-2,6-diyl-alt-(5-(2-ethylhexyl)-4H-thieno[3,4-c]pyrrole-4,6(5H)-dione)-1,3-diyl] (PBDTS-TPD) with a low-lying highest occupied molecular orbital level and an acceptor polymer poly[[N,N′-bis(2-octyldodecyl)-naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diyl]-alt-thiophene-2,5-diyl] (PNDI-T) with a high-lying lowest unoccupied molecular orbital level is used, realizing high-performance all-PSCs with simultaneously high V<sub>oc</sub> of 1.1 V and high PCE of 8.0%, and surpassing the performance of the corresponding PC<sub>71</sub>BM-based PSCs. The PBDTS-TPD:PNDI-T all-PSCs achieve a maximum internal quantum efficiency of 95% at 450 nm, which reveals that almost all the absorbed photons can be converted into free charges and collected by electrodes. This work demonstrates the advantages of all-PSCs by incorporating proper donor and acceptor polymers to boost both V<sub>oc</sub> and PCEs.</p>},
  articleno    = {1700908},
  author       = {Xu, Xiaofeng and Li, Zhaojun and Zhang, Wei and Meng, Xiangyi and Zou, Xianshao and Di Carlo Rasi, Dario and Ma, Wei and Yartsev, Arkady and Andersson, Mats R. and Janssen, René A J and Wang, Ergang},
  issn         = {1614-6832},
  keyword      = {All-polymer solar cells,Conjugated polymers,Organic photovoltaics,Photovoltage,Quantum yield},
  language     = {eng},
  number       = {1},
  publisher    = {Wiley-Blackwell},
  series       = {Advanced Energy Materials},
  title        = {8.0% Efficient All-Polymer Solar Cells with High Photovoltage of 1.1 V and Internal Quantum Efficiency near Unity},
  url          = {http://dx.doi.org/10.1002/aenm.201700908},
  volume       = {8},
  year         = {2018},
}