Molecular-weight engineering of high-performing diketopyrrolopyrrole-based copolymer bearing high π-extended long donating units

Mai Ha Hoang; Duc Nghia Nguyen; Trinh Tung Ngo; Hyun Ah Um; Min Ju Cho; Dong Hoon Choi

doi:10.1016/j.polymer.2015.12.016

Molecular-weight engineering of high-performing diketopyrrolopyrrole-based copolymer bearing high π-extended long donating units

Mai Ha Hoang, Duc Nghia Nguyen, Trinh Tung Ngo, Hyun Ah Um, Min Ju Cho, Dong Hoon Choi

Department of Chemistry

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

7 Citations (Scopus)

Abstract

Two D-A alternating π-conjugated copolymers bearing diketopyrrolopyrrole (DPP) and sextetthiophene with different molecular weights were synthesized to investigate their physical properties and performance in thin-film transistors and photovoltaic cells. The solubility and molecular weight (MW) of these copolymers with a highly rigid backbone were improved by controlling the feeding ratio of the monomer in the polymerization mixture. These polymers exhibited high crystallinity with a predominant edge-on chain orientation on the substrate. The higher-MW P(DPP-6T)-2 copolymer displayed a higher hole mobility of 3.26 cm² V^-1 s^-1 than the low-MW P(DPP-6T)-1 copolymer. Bulk heterojunction photovoltaic cells made of a blend of P(DPP-6T)-2 and (6,6)-phenyl C₇₁-butyric acid methyl ester displayed good device performance with a power conversion efficiency of 4.68%.

Original language	English
Pages (from-to)	77-84
Number of pages	8
Journal	Polymer
Volume	83
DOIs	https://doi.org/10.1016/j.polymer.2015.12.016
Publication status	Published - 2016 Jan 28

Keywords

Diketopyrrolopyrrole
Photovoltaic cell
Thin film transistor

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Materials Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.polymer.2015.12.016

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title = "Molecular-weight engineering of high-performing diketopyrrolopyrrole-based copolymer bearing high π-extended long donating units",

abstract = "Two D-A alternating π-conjugated copolymers bearing diketopyrrolopyrrole (DPP) and sextetthiophene with different molecular weights were synthesized to investigate their physical properties and performance in thin-film transistors and photovoltaic cells. The solubility and molecular weight (MW) of these copolymers with a highly rigid backbone were improved by controlling the feeding ratio of the monomer in the polymerization mixture. These polymers exhibited high crystallinity with a predominant edge-on chain orientation on the substrate. The higher-MW P(DPP-6T)-2 copolymer displayed a higher hole mobility of 3.26 cm2 V-1 s-1 than the low-MW P(DPP-6T)-1 copolymer. Bulk heterojunction photovoltaic cells made of a blend of P(DPP-6T)-2 and (6,6)-phenyl C71-butyric acid methyl ester displayed good device performance with a power conversion efficiency of 4.68%.",

keywords = "Diketopyrrolopyrrole, Photovoltaic cell, Thin film transistor",

author = "Hoang, {Mai Ha} and Nguyen, {Duc Nghia} and Ngo, {Trinh Tung} and Um, {Hyun Ah} and Cho, {Min Ju} and Choi, {Dong Hoon}",

note = "Funding Information: This research is funded by Vietnam National Foundation for Science and Technology Development (NAFOSTED) under grant number “ 104.02-2013.67 ”. This research was supported by National Research Foundation of Korea ( NRF2012R1A2A1A01008797 ) and by Key Research Institute Program ( NRF20100020209 ). MJ Cho particularly acknowledges the support from a Korea University grant (2014–2015). We are grateful to Pohang Accelerator Laboratory (Pohang, Korea) for allowing us to conduct the grazing incidence X-ray diffraction (GI-XRD) measurements. Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd. All rights reserved. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.",

year = "2016",

month = jan,

day = "28",

doi = "10.1016/j.polymer.2015.12.016",

language = "English",

volume = "83",

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journal = "Polymer (United Kingdom)",

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T1 - Molecular-weight engineering of high-performing diketopyrrolopyrrole-based copolymer bearing high π-extended long donating units

AU - Hoang, Mai Ha

AU - Nguyen, Duc Nghia

AU - Ngo, Trinh Tung

AU - Um, Hyun Ah

AU - Cho, Min Ju

AU - Choi, Dong Hoon

N1 - Funding Information: This research is funded by Vietnam National Foundation for Science and Technology Development (NAFOSTED) under grant number “ 104.02-2013.67 ”. This research was supported by National Research Foundation of Korea ( NRF2012R1A2A1A01008797 ) and by Key Research Institute Program ( NRF20100020209 ). MJ Cho particularly acknowledges the support from a Korea University grant (2014–2015). We are grateful to Pohang Accelerator Laboratory (Pohang, Korea) for allowing us to conduct the grazing incidence X-ray diffraction (GI-XRD) measurements. Publisher Copyright: © 2015 Elsevier Ltd. All rights reserved. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.

PY - 2016/1/28

Y1 - 2016/1/28

N2 - Two D-A alternating π-conjugated copolymers bearing diketopyrrolopyrrole (DPP) and sextetthiophene with different molecular weights were synthesized to investigate their physical properties and performance in thin-film transistors and photovoltaic cells. The solubility and molecular weight (MW) of these copolymers with a highly rigid backbone were improved by controlling the feeding ratio of the monomer in the polymerization mixture. These polymers exhibited high crystallinity with a predominant edge-on chain orientation on the substrate. The higher-MW P(DPP-6T)-2 copolymer displayed a higher hole mobility of 3.26 cm2 V-1 s-1 than the low-MW P(DPP-6T)-1 copolymer. Bulk heterojunction photovoltaic cells made of a blend of P(DPP-6T)-2 and (6,6)-phenyl C71-butyric acid methyl ester displayed good device performance with a power conversion efficiency of 4.68%.

AB - Two D-A alternating π-conjugated copolymers bearing diketopyrrolopyrrole (DPP) and sextetthiophene with different molecular weights were synthesized to investigate their physical properties and performance in thin-film transistors and photovoltaic cells. The solubility and molecular weight (MW) of these copolymers with a highly rigid backbone were improved by controlling the feeding ratio of the monomer in the polymerization mixture. These polymers exhibited high crystallinity with a predominant edge-on chain orientation on the substrate. The higher-MW P(DPP-6T)-2 copolymer displayed a higher hole mobility of 3.26 cm2 V-1 s-1 than the low-MW P(DPP-6T)-1 copolymer. Bulk heterojunction photovoltaic cells made of a blend of P(DPP-6T)-2 and (6,6)-phenyl C71-butyric acid methyl ester displayed good device performance with a power conversion efficiency of 4.68%.

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KW - Photovoltaic cell

KW - Thin film transistor

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Molecular-weight engineering of high-performing diketopyrrolopyrrole-based copolymer bearing high π-extended long donating units

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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