Effects of different polar solvents for solvent vapor annealing treatment on the performance of polymer solar cells

Yifan Zheng; Shuguang Li; Ding Zheng; Junsheng Yu

doi:10.1016/j.orgel.2014.07.026

Effects of different polar solvents for solvent vapor annealing treatment on the performance of polymer solar cells

Yifan Zheng, Shuguang Li, Ding Zheng, Junsheng Yu^*

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

84 Scopus citations

Abstract

The effects of different polar solvents on the performance of solvent vapor annealing treated polymer solar cell (PSC) with a structure of ITO/ZnO/PTB7: PC₇₁BM/MoO₃/Ag was systematically investigated by applying different polar solvents, including methanol, ethanol, dimethylsulfoxide, acetone and isopropanol. By analyzing the variation of PSC performance and the morphology of active layer, we found that both the solubility parameters (Δ) and viscosity of solvent were playing an important role in controlling the morphology of PTB7: PC₇₁BM blend. Especially, the PSC treated by methanol with high Δ and low viscosity exhibited a remarkable enhancement of power conversion efficiency from 6.55% to 8.13%. The performance improvement was mainly due to the formation of the nanoscale crystallization of PTB7: PC₇₁BM blend and the moderated aggregation of PC₇₁BM, resulting in efficient charge separation, balanced charge transport and suppressed charge recombination.

Original language	English (US)
Pages (from-to)	2647-2653
Number of pages	7
Journal	Organic Electronics
Volume	15
Issue number	11
DOIs	https://doi.org/10.1016/j.orgel.2014.07.026
State	Published - Nov 2014

Funding

This work was supported by the National Science Foundation of China (NSFC) (Grant No. 61177032 ), the Fundamental Research Funds for the Central Universities (Grant No. ZYGX2010Z004 ), Chongqing Science & Technology Commission ( cstc2013jcyjys50001 ).

Keywords

Polar solvent
Polymer solar cell (PSC)
Solvent polarity
Solvent property
Solvent vapor annealing (SVA)

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Biomaterials
General Chemistry
Condensed Matter Physics
Materials Chemistry
Electrical and Electronic Engineering

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title = "Effects of different polar solvents for solvent vapor annealing treatment on the performance of polymer solar cells",

abstract = "The effects of different polar solvents on the performance of solvent vapor annealing treated polymer solar cell (PSC) with a structure of ITO/ZnO/PTB7: PC71BM/MoO3/Ag was systematically investigated by applying different polar solvents, including methanol, ethanol, dimethylsulfoxide, acetone and isopropanol. By analyzing the variation of PSC performance and the morphology of active layer, we found that both the solubility parameters (Δ) and viscosity of solvent were playing an important role in controlling the morphology of PTB7: PC71BM blend. Especially, the PSC treated by methanol with high Δ and low viscosity exhibited a remarkable enhancement of power conversion efficiency from 6.55% to 8.13%. The performance improvement was mainly due to the formation of the nanoscale crystallization of PTB7: PC71BM blend and the moderated aggregation of PC71BM, resulting in efficient charge separation, balanced charge transport and suppressed charge recombination.",

keywords = "Polar solvent, Polymer solar cell (PSC), Solvent polarity, Solvent property, Solvent vapor annealing (SVA)",

author = "Yifan Zheng and Shuguang Li and Ding Zheng and Junsheng Yu",

note = "Funding Information: This work was supported by the National Science Foundation of China (NSFC) (Grant No. 61177032 ), the Fundamental Research Funds for the Central Universities (Grant No. ZYGX2010Z004 ), Chongqing Science & Technology Commission ( cstc2013jcyjys50001 ). ",

year = "2014",

month = nov,

doi = "10.1016/j.orgel.2014.07.026",

language = "English (US)",

volume = "15",

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journal = "Organic Electronics",

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T1 - Effects of different polar solvents for solvent vapor annealing treatment on the performance of polymer solar cells

AU - Zheng, Yifan

AU - Li, Shuguang

AU - Zheng, Ding

AU - Yu, Junsheng

N1 - Funding Information: This work was supported by the National Science Foundation of China (NSFC) (Grant No. 61177032 ), the Fundamental Research Funds for the Central Universities (Grant No. ZYGX2010Z004 ), Chongqing Science & Technology Commission ( cstc2013jcyjys50001 ).

PY - 2014/11

Y1 - 2014/11

N2 - The effects of different polar solvents on the performance of solvent vapor annealing treated polymer solar cell (PSC) with a structure of ITO/ZnO/PTB7: PC71BM/MoO3/Ag was systematically investigated by applying different polar solvents, including methanol, ethanol, dimethylsulfoxide, acetone and isopropanol. By analyzing the variation of PSC performance and the morphology of active layer, we found that both the solubility parameters (Δ) and viscosity of solvent were playing an important role in controlling the morphology of PTB7: PC71BM blend. Especially, the PSC treated by methanol with high Δ and low viscosity exhibited a remarkable enhancement of power conversion efficiency from 6.55% to 8.13%. The performance improvement was mainly due to the formation of the nanoscale crystallization of PTB7: PC71BM blend and the moderated aggregation of PC71BM, resulting in efficient charge separation, balanced charge transport and suppressed charge recombination.

AB - The effects of different polar solvents on the performance of solvent vapor annealing treated polymer solar cell (PSC) with a structure of ITO/ZnO/PTB7: PC71BM/MoO3/Ag was systematically investigated by applying different polar solvents, including methanol, ethanol, dimethylsulfoxide, acetone and isopropanol. By analyzing the variation of PSC performance and the morphology of active layer, we found that both the solubility parameters (Δ) and viscosity of solvent were playing an important role in controlling the morphology of PTB7: PC71BM blend. Especially, the PSC treated by methanol with high Δ and low viscosity exhibited a remarkable enhancement of power conversion efficiency from 6.55% to 8.13%. The performance improvement was mainly due to the formation of the nanoscale crystallization of PTB7: PC71BM blend and the moderated aggregation of PC71BM, resulting in efficient charge separation, balanced charge transport and suppressed charge recombination.

KW - Polar solvent

KW - Polymer solar cell (PSC)

KW - Solvent polarity

KW - Solvent property

KW - Solvent vapor annealing (SVA)

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Effects of different polar solvents for solvent vapor annealing treatment on the performance of polymer solar cells

Abstract

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ASJC Scopus subject areas

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