Phase Separation in PCDTBT:PCBM Blends: from Flory-Huggins Interaction Parameters to Ternary Phase Diagrams

Monika Biernat; Paweł Dąbczyński; Paweł Biernat; Jakub Rysz

doi:10.1007/s10118-020-2424-8

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Phase Separation in PCDTBT:PCBM Blends: from Flory-Huggins Interaction Parameters to Ternary Phase Diagrams

ARTICLE | Updated：2020-06-09

- Phase Separation in PCDTBT:PCBM Blends: from Flory-Huggins Interaction Parameters to Ternary Phase Diagrams
- Phase Separation in PCDTBT:PCBM Blends: from Flory-Huggins Interaction Parameters to Ternary Phase Diagrams
- Chinese Journal of Polymer Science 2020年38卷第9期页码：1025-1033
- Affiliations：
  
  a.Jagiellonian University, Faculty of Physics Astronomy and Applied Computer Science ul. Łojasiewicza 11, 30-348 Kraków, Poland
  b.Mathematisches Institut, Rheinische Friedrich-Wilhelms-Universität Bonn, Endenicher Allee 60, 53115 Bonn, Germany
- Author bio：
  
  jakub.rysz@uj.edu.pl
- Funds：
  
  This work was financially supported by the National Science Center (No. UMO-2013/11/B/ST5/04473). The research was performed with equipment purchased from the financial support of the European Regional Development Fund in the framework of the Polish Innovation Economy Operational Program (Contract No. POIG.02.01.00-12-023/08).
- DOI：10.1007/s10118-020-2424-8
  中图分类号：
- 收稿：2020-01-11，
  
  修回：2020-3-2，
  
  录用：2020-3-13，
  
  网络首发：2020-06-09，
  
  纸质出版：2020-09
- Accepted：
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Biernat, M.; Dąbczyński, P.; Biernat, P.; Rysz, J. Phase separation in PCDTBT:PCBM blends: from Flory-Huggins interaction parameters to ternary phase diagrams. Chinese J. Polym. Sci. 2020, 38, 1025–1033

Monika Biernat, Paweł Dąbczyński, Paweł Biernat, et al. Phase Separation in PCDTBT:PCBM Blends: from Flory-Huggins Interaction Parameters to Ternary Phase Diagrams[J]. Chinese Journal of Polymer Science, 2020, 38(9): 1025-1033.
Biernat, M.; Dąbczyński, P.; Biernat, P.; Rysz, J. Phase separation in PCDTBT:PCBM blends: from Flory-Huggins interaction parameters to ternary phase diagrams. Chinese J. Polym. Sci. 2020, 38, 1025–1033 DOI： 10.1007/s10118-020-2424-8.

Monika Biernat, Paweł Dąbczyński, Paweł Biernat, et al. Phase Separation in PCDTBT:PCBM Blends: from Flory-Huggins Interaction Parameters to Ternary Phase Diagrams[J]. Chinese Journal of Polymer Science, 2020, 38(9): 1025-1033. DOI： 10.1007/s10118-020-2424-8.

摘要

Abstract

The substantial increase in the efficiency of organic solar cells achieved in recent years would not have been possible without work on the synthesis of new materials and understanding the relationship between the morphology and performance of organic photovoltaic devices. The structure of solvent-cast active layers is a result of phase separation in mixtures of donor and acceptor components. To a large extent

this process depends on the interactions between the components of the mixture. Here

we present a systematic analysis of the morphology of poly[

-9′-heptadecanyl-2

7-carbazole-

alt

-5

5-(4′

7′-di-2-thienyl-2′

1′

3′-benzothiadiazole)] (PCDTBT) and [6

-phenyl-C

-butyric acid methyl ester (PC70BM) films in terms of the ternary phase diagram. The interaction parameters between PCDTBT and four different solvents

namely chloroform

chlorobenzene

-dichlorobenzene

and toluene

were estimated based on swelling experiments. Based on these values

ternary phase diagrams of PCDTBT:PC70BM in different solvents were calculated. The morphology of spin-coated films with different blend ratios cast from different solvents is discussed in terms of the obtained phase diagrams.

关键词

Keywords

references

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