Solution-Processed High-Performance Tetrathienothiophene-Based Small Molecular Blends for Ambipolar Charge Transport

Sureshraju Vegiraju; Chih Yu Lin; Pragya Priyanka; Deng Yi Huang; Xian Lun Luo; Hsiang Chi Tsai; Shao Huan Hong; Chia Jung Yeh; Wei Chieh Lien; Chien Lung Wang; Shih Huang Tung; Cheng Liang Liu; Ming Chou Chen; Antonio Facchetti

doi:10.1002/adfm.201801025

Solution-Processed High-Performance Tetrathienothiophene-Based Small Molecular Blends for Ambipolar Charge Transport

Sureshraju Vegiraju, Chih Yu Lin, Pragya Priyanka, Deng Yi Huang, Xian Lun Luo, Hsiang Chi Tsai, Shao Huan Hong, Chia Jung Yeh, Wei Chieh Lien, Chien Lung Wang, Shih Huang Tung, Cheng Liang Liu, Ming Chou Chen, Antonio Facchetti

Department of Chemistry

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

30 Scopus citations

Abstract

Four soluble dialkylated tetrathienoacene (TTAR)-based small molecular semiconductors featuring the combination of a TTAR central core, π-conjugated spacers comprising bithiophene (bT) or thiophene (T), and with/without cyanoacrylate (CA) end-capping moieties are synthesized and characterized. The molecule DbT-TTAR exhibits a promising hole mobility up to 0.36 cm² V⁻¹ s⁻¹ due to the enhanced crystallinity of the microribbon-like films. Binary blends of the p-type DbT-TTAR and the n-type dicyanomethylene substituted dithienothiophene-quinoid (DTTQ-11) are investigated in terms of film morphology, microstructure, and organic field-effect transistor (OFET) performance. The data indicate that as the DbT-TTAR content in the blend film increases, the charge transport characteristics vary from unipolar (electron-only) to ambipolar and then back to unipolar (hole-only). With a 1:1 weight ratio of DbT-TTAR DTTQ-11 in the blend, well-defined pathways for both charge carriers are achieved and resulted in ambipolar transport with high hole and electron mobilities of 0.83 and 0.37 cm² V⁻¹ s⁻¹, respectively. This study provides a viable way for tuning microstructure and charge carrier transport in small molecules and their blends to achieve high-performance solution-processable OFETs.

Original language	English
Article number	1801025
Journal	Advanced Functional Materials
Volume	28
Issue number	28
DOIs	https://doi.org/10.1002/adfm.201801025
State	Published - 11 Jul 2018

Keywords

ambipolar charge transport
blends
organic field-effect transistors
solution-shearing
tetrathienoacene

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10.1002/adfm.201801025

CCDC 1822413: Experimental Crystal Structure Determination
Vegiraju, S. (Contributor), Lin, C.-Y. (Contributor), Priyanka, P. (Contributor), Huang, D.-Y. (Contributor), Luo, X.-L. (Contributor), Tsai, H.-C. (Contributor), Hong, S.-H. (Contributor), Yeh, C.-J. (Contributor), Lien, W.-C. (Contributor), Wang, C.-L. (Contributor), Tung, S.-H. (Contributor), Liu, C.-L. (Contributor), Chen, M.-C. (Contributor) & Facchetti, A. (Contributor), The Cambridge Structural Database, 2020
DOI: 10.5517/ccdc.csd.cc1z5cj1, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/ccdc.csd.cc1z5cj1&sid=DataCite
Dataset

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Vegiraju, S., Lin, C. Y., Priyanka, P., Huang, D. Y., Luo, X. L., Tsai, H. C., Hong, S. H., Yeh, C. J., Lien, W. C., Wang, C. L., Tung, S. H., Liu, C. L., Chen, M. C., & Facchetti, A. (2018). Solution-Processed High-Performance Tetrathienothiophene-Based Small Molecular Blends for Ambipolar Charge Transport. Advanced Functional Materials, 28(28), Article 1801025. https://doi.org/10.1002/adfm.201801025

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title = "Solution-Processed High-Performance Tetrathienothiophene-Based Small Molecular Blends for Ambipolar Charge Transport",

abstract = "Four soluble dialkylated tetrathienoacene (TTAR)-based small molecular semiconductors featuring the combination of a TTAR central core, π-conjugated spacers comprising bithiophene (bT) or thiophene (T), and with/without cyanoacrylate (CA) end-capping moieties are synthesized and characterized. The molecule DbT-TTAR exhibits a promising hole mobility up to 0.36 cm2 V−1 s−1 due to the enhanced crystallinity of the microribbon-like films. Binary blends of the p-type DbT-TTAR and the n-type dicyanomethylene substituted dithienothiophene-quinoid (DTTQ-11) are investigated in terms of film morphology, microstructure, and organic field-effect transistor (OFET) performance. The data indicate that as the DbT-TTAR content in the blend film increases, the charge transport characteristics vary from unipolar (electron-only) to ambipolar and then back to unipolar (hole-only). With a 1:1 weight ratio of DbT-TTAR DTTQ-11 in the blend, well-defined pathways for both charge carriers are achieved and resulted in ambipolar transport with high hole and electron mobilities of 0.83 and 0.37 cm2 V−1 s−1, respectively. This study provides a viable way for tuning microstructure and charge carrier transport in small molecules and their blends to achieve high-performance solution-processable OFETs.",

keywords = "ambipolar charge transport, blends, organic field-effect transistors, solution-shearing, tetrathienoacene",

author = "Sureshraju Vegiraju and Lin, {Chih Yu} and Pragya Priyanka and Huang, {Deng Yi} and Luo, {Xian Lun} and Tsai, {Hsiang Chi} and Hong, {Shao Huan} and Yeh, {Chia Jung} and Lien, {Wei Chieh} and Wang, {Chien Lung} and Tung, {Shih Huang} and Liu, {Cheng Liang} and Chen, {Ming Chou} and Antonio Facchetti",

note = "Publisher Copyright: {\textcopyright} 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

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T1 - Solution-Processed High-Performance Tetrathienothiophene-Based Small Molecular Blends for Ambipolar Charge Transport

AU - Vegiraju, Sureshraju

AU - Lin, Chih Yu

AU - Priyanka, Pragya

AU - Huang, Deng Yi

AU - Luo, Xian Lun

AU - Tsai, Hsiang Chi

AU - Hong, Shao Huan

AU - Yeh, Chia Jung

AU - Lien, Wei Chieh

AU - Wang, Chien Lung

AU - Tung, Shih Huang

AU - Liu, Cheng Liang

AU - Chen, Ming Chou

AU - Facchetti, Antonio

PY - 2018/7/11

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N2 - Four soluble dialkylated tetrathienoacene (TTAR)-based small molecular semiconductors featuring the combination of a TTAR central core, π-conjugated spacers comprising bithiophene (bT) or thiophene (T), and with/without cyanoacrylate (CA) end-capping moieties are synthesized and characterized. The molecule DbT-TTAR exhibits a promising hole mobility up to 0.36 cm2 V−1 s−1 due to the enhanced crystallinity of the microribbon-like films. Binary blends of the p-type DbT-TTAR and the n-type dicyanomethylene substituted dithienothiophene-quinoid (DTTQ-11) are investigated in terms of film morphology, microstructure, and organic field-effect transistor (OFET) performance. The data indicate that as the DbT-TTAR content in the blend film increases, the charge transport characteristics vary from unipolar (electron-only) to ambipolar and then back to unipolar (hole-only). With a 1:1 weight ratio of DbT-TTAR DTTQ-11 in the blend, well-defined pathways for both charge carriers are achieved and resulted in ambipolar transport with high hole and electron mobilities of 0.83 and 0.37 cm2 V−1 s−1, respectively. This study provides a viable way for tuning microstructure and charge carrier transport in small molecules and their blends to achieve high-performance solution-processable OFETs.

AB - Four soluble dialkylated tetrathienoacene (TTAR)-based small molecular semiconductors featuring the combination of a TTAR central core, π-conjugated spacers comprising bithiophene (bT) or thiophene (T), and with/without cyanoacrylate (CA) end-capping moieties are synthesized and characterized. The molecule DbT-TTAR exhibits a promising hole mobility up to 0.36 cm2 V−1 s−1 due to the enhanced crystallinity of the microribbon-like films. Binary blends of the p-type DbT-TTAR and the n-type dicyanomethylene substituted dithienothiophene-quinoid (DTTQ-11) are investigated in terms of film morphology, microstructure, and organic field-effect transistor (OFET) performance. The data indicate that as the DbT-TTAR content in the blend film increases, the charge transport characteristics vary from unipolar (electron-only) to ambipolar and then back to unipolar (hole-only). With a 1:1 weight ratio of DbT-TTAR DTTQ-11 in the blend, well-defined pathways for both charge carriers are achieved and resulted in ambipolar transport with high hole and electron mobilities of 0.83 and 0.37 cm2 V−1 s−1, respectively. This study provides a viable way for tuning microstructure and charge carrier transport in small molecules and their blends to achieve high-performance solution-processable OFETs.

KW - ambipolar charge transport

KW - blends

KW - organic field-effect transistors

KW - solution-shearing

KW - tetrathienoacene

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U2 - 10.1002/adfm.201801025

DO - 10.1002/adfm.201801025

M3 - 期刊論文

AN - SCOPUS:85047523516

SN - 1616-301X

VL - 28

JO - Advanced Functional Materials

JF - Advanced Functional Materials

IS - 28

M1 - 1801025

ER -

Solution-Processed High-Performance Tetrathienothiophene-Based Small Molecular Blends for Ambipolar Charge Transport

Abstract

Keywords

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Datasets

CCDC 1822413: Experimental Crystal Structure Determination

Cite this