Alternative Thieno[3,2-b][1]benzothiophene Isoindigo Polymers for Solar Cell Applications

Marios Neophytou; Daniel Bryant; Sergei Lopatin; Hu Chen; Rawad K. Hallani; Lewis Cater; Iain McCulloch; Wan Yue

doi:10.1002/marc.201700820

Alternative Thieno[3,2-b][1]benzothiophene Isoindigo Polymers for Solar Cell Applications

Marios Neophytou, Daniel Bryant, Sergei Lopatin, Hu Chen, Rawad K. Hallani, Lewis Cater, Iain McCulloch, Wan Yue

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

9 Scopus citations

Abstract

This work reports the synthesis, characterization, photophysical, and photovoltaic properties of five new thieno[3,2-b][1]benzothiophene isoindigo (TBTI)-containing low bandgap donor–acceptor conjugated polymers with a series of comonomers and different side chains. When TBTI is combined with different electron-rich moieties, even small structural variations can have significant impact on thin film morphology of the polymer:phenyl C70 butyric acid methyl ester (PCBM) blends. More importantly, high-resolution electron energy loss spectroscopy is used to investigate the phase-separated bulk heterojunction domains, which can be accurately and precisely resolved, enabling an enhanced correlation between polymer chemical structure, photovoltaic device performance, and morphology.

Original language	English (US)
Article number	1700820
Journal	Macromolecular Rapid Communications
Volume	39
Issue number	14
DOIs	https://doi.org/10.1002/marc.201700820
State	Published - Jul 2018
Externally published	Yes

All Science Journal Classification (ASJC) codes

Organic Chemistry
Polymers and Plastics
Materials Chemistry

Keywords

conjugated polymers
EELS mapping
solar cells
thieno-benzothiophene isoindigo

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10.1002/marc.201700820

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title = "Alternative Thieno[3,2-b][1]benzothiophene Isoindigo Polymers for Solar Cell Applications",

abstract = "This work reports the synthesis, characterization, photophysical, and photovoltaic properties of five new thieno[3,2-b][1]benzothiophene isoindigo (TBTI)-containing low bandgap donor–acceptor conjugated polymers with a series of comonomers and different side chains. When TBTI is combined with different electron-rich moieties, even small structural variations can have significant impact on thin film morphology of the polymer:phenyl C70 butyric acid methyl ester (PCBM) blends. More importantly, high-resolution electron energy loss spectroscopy is used to investigate the phase-separated bulk heterojunction domains, which can be accurately and precisely resolved, enabling an enhanced correlation between polymer chemical structure, photovoltaic device performance, and morphology.",

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author = "Marios Neophytou and Daniel Bryant and Sergei Lopatin and Hu Chen and Hallani, {Rawad K.} and Lewis Cater and Iain McCulloch and Wan Yue",

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AU - Neophytou, Marios

AU - Bryant, Daniel

AU - Lopatin, Sergei

AU - Chen, Hu

AU - Hallani, Rawad K.

AU - Cater, Lewis

AU - McCulloch, Iain

AU - Yue, Wan

PY - 2018/7

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N2 - This work reports the synthesis, characterization, photophysical, and photovoltaic properties of five new thieno[3,2-b][1]benzothiophene isoindigo (TBTI)-containing low bandgap donor–acceptor conjugated polymers with a series of comonomers and different side chains. When TBTI is combined with different electron-rich moieties, even small structural variations can have significant impact on thin film morphology of the polymer:phenyl C70 butyric acid methyl ester (PCBM) blends. More importantly, high-resolution electron energy loss spectroscopy is used to investigate the phase-separated bulk heterojunction domains, which can be accurately and precisely resolved, enabling an enhanced correlation between polymer chemical structure, photovoltaic device performance, and morphology.

AB - This work reports the synthesis, characterization, photophysical, and photovoltaic properties of five new thieno[3,2-b][1]benzothiophene isoindigo (TBTI)-containing low bandgap donor–acceptor conjugated polymers with a series of comonomers and different side chains. When TBTI is combined with different electron-rich moieties, even small structural variations can have significant impact on thin film morphology of the polymer:phenyl C70 butyric acid methyl ester (PCBM) blends. More importantly, high-resolution electron energy loss spectroscopy is used to investigate the phase-separated bulk heterojunction domains, which can be accurately and precisely resolved, enabling an enhanced correlation between polymer chemical structure, photovoltaic device performance, and morphology.

KW - conjugated polymers

KW - EELS mapping

KW - solar cells

KW - thieno-benzothiophene isoindigo

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Alternative Thieno[3,2-b][1]benzothiophene Isoindigo Polymers for Solar Cell Applications

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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