Impact of polymorphism on the optoelectronic properties of a low-bandgap semiconducting polymer

Mengmeng Li, Ahmed Hesham Balawi, Pieter J. Leenaers, Lu Ning, Gaël H.L. Heintges, Tomasz Marszalek, Wojciech Pisula, Martijn M. Wienk, Stefan C.J. Meskers, Yuanping Yi, Frédéric Laquai, René A.J. Janssen (Corresponding author)

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Polymorphism of organic semiconducting materials exerts critical effects on their physical properties such as optical absorption, emission and electrical conductivity, and provides an excellent platform for investigating structure–property relations. It is, however, challenging to efficiently tune the polymorphism of conjugated polymers in aggregated, semi-crystalline phases due to their conformational freedom and anisotropic nature. Here, two distinctly different semi-crystalline polymorphs (β1 and β2) of a low-bandgap diketopyrrolopyrrole polymer are formed through controlling the solvent quality, as evidenced by spectroscopic, structural, thermal and charge transport studies. Compared to β1, the β2 polymorph exhibits a lower optical band gap, an enhanced photoluminescence, a reduced π-stacking distance, a higher hole mobility in field-effect transistors and improved photocurrent generation in polymer solar cells. The β1 and β2 polymorphs provide insights into the control of polymer self-organization for plastic electronics and hold potential for developing programmable ink formulations for next-generation electronic devices.

LanguageEnglish
Article number2867
Number of pages11
JournalNature Communications
Volume10
Issue number1
DOIs
StatePublished - 28 Jun 2019

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Semiconducting polymers
polymorphism
Polymorphism
Optoelectronic devices
Polymers
Energy gap
polymers
Strategic materials
conductivity
Electric Conductivity
Ink
Hole mobility
Conjugated polymers
Optical band gaps
hole mobility
inks
Field effect transistors
Crystallization
Photocurrents
electronics

Cite this

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title = "Impact of polymorphism on the optoelectronic properties of a low-bandgap semiconducting polymer",
abstract = "Polymorphism of organic semiconducting materials exerts critical effects on their physical properties such as optical absorption, emission and electrical conductivity, and provides an excellent platform for investigating structure–property relations. It is, however, challenging to efficiently tune the polymorphism of conjugated polymers in aggregated, semi-crystalline phases due to their conformational freedom and anisotropic nature. Here, two distinctly different semi-crystalline polymorphs (β1 and β2) of a low-bandgap diketopyrrolopyrrole polymer are formed through controlling the solvent quality, as evidenced by spectroscopic, structural, thermal and charge transport studies. Compared to β1, the β2 polymorph exhibits a lower optical band gap, an enhanced photoluminescence, a reduced π-stacking distance, a higher hole mobility in field-effect transistors and improved photocurrent generation in polymer solar cells. The β1 and β2 polymorphs provide insights into the control of polymer self-organization for plastic electronics and hold potential for developing programmable ink formulations for next-generation electronic devices.",
author = "Mengmeng Li and Balawi, {Ahmed Hesham} and Leenaers, {Pieter J.} and Lu Ning and Heintges, {Ga{\"e}l H.L.} and Tomasz Marszalek and Wojciech Pisula and Wienk, {Martijn M.} and Meskers, {Stefan C.J.} and Yuanping Yi and Fr{\'e}d{\'e}ric Laquai and Janssen, {Ren{\'e} A.J.}",
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Impact of polymorphism on the optoelectronic properties of a low-bandgap semiconducting polymer. / Li, Mengmeng; Balawi, Ahmed Hesham; Leenaers, Pieter J.; Ning, Lu; Heintges, Gaël H.L.; Marszalek, Tomasz; Pisula, Wojciech; Wienk, Martijn M.; Meskers, Stefan C.J.; Yi, Yuanping; Laquai, Frédéric; Janssen, René A.J. (Corresponding author).

In: Nature Communications, Vol. 10, No. 1, 2867, 28.06.2019.

Research output: Contribution to journalArticleAcademicpeer-review

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AU - Balawi,Ahmed Hesham

AU - Leenaers,Pieter J.

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AU - Heintges,Gaël H.L.

AU - Marszalek,Tomasz

AU - Pisula,Wojciech

AU - Wienk,Martijn M.

AU - Meskers,Stefan C.J.

AU - Yi,Yuanping

AU - Laquai,Frédéric

AU - Janssen,René A.J.

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