A new rigid planar low band gap PTTDPP-DT-DTT polymer for organic transistors and performance improvement through the use of a binary solvent system

Min Je Kim, Jong Yong Choi, Gukil An, Hyunjung Kim, Youngjong Kang, Jai Kyeong Kim, Hae Jung Son, Jung Heon Lee, Jeong Ho Cho, Bongsoo Kim

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

We report the synthesis of a new low band gap planar polymer of poly(2,5-bis(2-decyltetradecyl)-3-(5-(dithieno[3,2-b:2′,3′-d]thiophen-2-yl)thieno[3,2-b]thiophen-2-yl)-6-(thieno[3,2-b]thiophen-2-yl)-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione) (PTTDPP-DT-DTT) for use in organic thin film transistors (OTFTs). The polymer backbone is highly planar and well-conjugated, facilitating interchain stacking. The PTTDPP-DT-DTT-based OTFTs were fabricated and carrier mobilities were improved by using a binary solvent system: chloroform (CF):toluene (Tol), CF:chlorobenzene (CB), and CF:o-dichlorobenzene (DCB). The addition of higher boiling point solvents promoted film crystallinity with more edge-on orientations. Thus, the use of CF:DCB yielded the highest carrier mobility obtained among the devices tested. Thermal annealing further enhanced the mobility of the CF:DCB device. Atomic force microscopy images disclosed the most fibrous feature in the thermally annealed polymer film cast from CF:DCB solution. This work highlights that both the proper selection of a binary solvent and thermal annealing can manage film morphology of rigid planar conjugated polymer semiconductors effectively for high-performance OTFTs.

Original languageEnglish
Pages (from-to)138-146
Number of pages9
JournalDyes and Pigments
Volume126
DOIs
Publication statusPublished - 2016 Mar 1

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Chloroform
Chlorine compounds
Polymers
Transistors
Energy gap
Thin film transistors
Carrier mobility
Annealing
Pyrroles
Boiling point
Conjugated polymers
Toluene
Polymer films
Atomic force microscopy
Semiconductor materials
2-dichlorobenzene

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Process Chemistry and Technology

Cite this

Kim, Min Je ; Choi, Jong Yong ; An, Gukil ; Kim, Hyunjung ; Kang, Youngjong ; Kim, Jai Kyeong ; Son, Hae Jung ; Lee, Jung Heon ; Cho, Jeong Ho ; Kim, Bongsoo. / A new rigid planar low band gap PTTDPP-DT-DTT polymer for organic transistors and performance improvement through the use of a binary solvent system. In: Dyes and Pigments. 2016 ; Vol. 126. pp. 138-146.
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abstract = "We report the synthesis of a new low band gap planar polymer of poly(2,5-bis(2-decyltetradecyl)-3-(5-(dithieno[3,2-b:2′,3′-d]thiophen-2-yl)thieno[3,2-b]thiophen-2-yl)-6-(thieno[3,2-b]thiophen-2-yl)-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione) (PTTDPP-DT-DTT) for use in organic thin film transistors (OTFTs). The polymer backbone is highly planar and well-conjugated, facilitating interchain stacking. The PTTDPP-DT-DTT-based OTFTs were fabricated and carrier mobilities were improved by using a binary solvent system: chloroform (CF):toluene (Tol), CF:chlorobenzene (CB), and CF:o-dichlorobenzene (DCB). The addition of higher boiling point solvents promoted film crystallinity with more edge-on orientations. Thus, the use of CF:DCB yielded the highest carrier mobility obtained among the devices tested. Thermal annealing further enhanced the mobility of the CF:DCB device. Atomic force microscopy images disclosed the most fibrous feature in the thermally annealed polymer film cast from CF:DCB solution. This work highlights that both the proper selection of a binary solvent and thermal annealing can manage film morphology of rigid planar conjugated polymer semiconductors effectively for high-performance OTFTs.",
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A new rigid planar low band gap PTTDPP-DT-DTT polymer for organic transistors and performance improvement through the use of a binary solvent system. / Kim, Min Je; Choi, Jong Yong; An, Gukil; Kim, Hyunjung; Kang, Youngjong; Kim, Jai Kyeong; Son, Hae Jung; Lee, Jung Heon; Cho, Jeong Ho; Kim, Bongsoo.

In: Dyes and Pigments, Vol. 126, 01.03.2016, p. 138-146.

Research output: Contribution to journalArticle

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AU - Kim, Min Je

AU - Choi, Jong Yong

AU - An, Gukil

AU - Kim, Hyunjung

AU - Kang, Youngjong

AU - Kim, Jai Kyeong

AU - Son, Hae Jung

AU - Lee, Jung Heon

AU - Cho, Jeong Ho

AU - Kim, Bongsoo

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