8.0% efficient all-polymer solar cells with high photovoltage of 1.1 V and internal quantum efficiency near unity

X. Xu, Z. Li, W. Zhang, X. Meng, X. Zou, D. Di Carlo Rasi, W. Ma, A. Yartsev, M.R. Andersson, R.A.J. Janssen, E. Wang

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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 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.

Original languageEnglish
Article number1700908
Number of pages11
JournalAdvanced Energy Materials
Volume8
Issue number1
DOIs
Publication statusPublished - 5 Jan 2018

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Quantum efficiency
Polymers
Molecular orbitals
Temperature programmed desorption
Conversion efficiency
Fullerenes
Thiophenes
Pyrroles
Thiophene
Open circuit voltage
Naphthalene
Electron energy levels
Polymer solar cells
Photons
Electrodes

Keywords

  • all-polymer solar cells
  • conjugated polymers
  • organic photovoltaics
  • photovoltage
  • quantum yield

Cite this

Xu, X. ; Li, Z. ; Zhang, W. ; Meng, X. ; Zou, X. ; Di Carlo Rasi, D. ; Ma, W. ; Yartsev, A. ; Andersson, M.R. ; Janssen, R.A.J. ; Wang, E. / 8.0% efficient all-polymer solar cells with high photovoltage of 1.1 V and internal quantum efficiency near unity. In: Advanced Energy Materials. 2018 ; Vol. 8, No. 1.
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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 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.",
keywords = "all-polymer solar cells, conjugated polymers, organic photovoltaics, photovoltage, quantum yield",
author = "X. Xu and Z. Li and W. Zhang and X. Meng and X. Zou and {Di Carlo Rasi}, D. and W. Ma and A. Yartsev and M.R. Andersson and R.A.J. Janssen and E. Wang",
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Xu, X, Li, Z, Zhang, W, Meng, X, Zou, X, Di Carlo Rasi, D, Ma, W, Yartsev, A, Andersson, MR, Janssen, RAJ & Wang, E 2018, '8.0% efficient all-polymer solar cells with high photovoltage of 1.1 V and internal quantum efficiency near unity', Advanced Energy Materials, vol. 8, no. 1, 1700908. https://doi.org/10.1002/aenm.201700908

8.0% efficient all-polymer solar cells with high photovoltage of 1.1 V and internal quantum efficiency near unity. / Xu, X.; Li, Z.; Zhang, W.; Meng, X.; Zou, X.; Di Carlo Rasi, D.; Ma, W.; Yartsev, A.; Andersson, M.R.; Janssen, R.A.J.; Wang, E.

In: Advanced Energy Materials, Vol. 8, No. 1, 1700908, 05.01.2018.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - 8.0% efficient all-polymer solar cells with high photovoltage of 1.1 V and internal quantum efficiency near unity

AU - Xu, X.

AU - Li, Z.

AU - Zhang, W.

AU - Meng, X.

AU - Zou, X.

AU - Di Carlo Rasi, D.

AU - Ma, W.

AU - Yartsev, A.

AU - Andersson, M.R.

AU - Janssen, R.A.J.

AU - Wang, E.

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N2 - 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.

AB - 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.

KW - all-polymer solar cells

KW - conjugated polymers

KW - organic photovoltaics

KW - photovoltage

KW - quantum yield

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