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Title: Enhancing Molecular Alignment and Charge Transport of Solution-Sheared Semiconducting Polymer Films by the Electrical-Blade Effect

Abstract

Controlling polymer chain alignment through processing is a means of tuning the charge transport of solution-based conjugated polymers. In this work, a processing strategy is proposed in which an external electric field (E-field) is applied to the coating blade (E-blade) to align polymer chain during solution-shearing, a meniscus-guided coating technique. A theoretical model based on dielectrophoresis quantitatively describes and predicts the alignment process and is used to guide the selection of the optimal conditions of the applied E-field. Using these conditions, more than two-fold increase in chain alignment is observed for E-bladed thin films of a diketopyrrolopyrrole (DPP) semiconducting polymer without affecting other morphological aspects such as film thickness, film coverage or fiber-like aggregation. Organic field effect transistors based on the E-bladed DPP polymer are fabricated at ambient conditions and over areas of a few cm2. They display a 3-fold improvement in their mobilities and a strong enhancement in charge transport anisotropy compared to films prepared without E-field. These results reveal a synergistic alignment effect from both the solution-shearing process and the applied E-field, and introduce a novel and general approach to control the morphology and the electrical properties of solutioncoated conjugated polymer thin films.

Authors:
 [1];  [1];  [1];  [2]; ORCiD logo [1];  [1]; ORCiD logo [3];  [1]
  1. Stanford Univ., CA (United States)
  2. Stanford Univ., CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1463390
Alternate Identifier(s):
OSTI ID: 1438076
Grant/Contract Number:  
AC02-76SF00515; SC0016523; P2ELP2_155355; ECCS-1542152; 106-2917-I-564-023
Resource Type:
Accepted Manuscript
Journal Name:
Advanced Electronic Materials
Additional Journal Information:
Journal Volume: 4; Journal Issue: 7; Journal ID: ISSN 2199-160X
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Molina-Lopez, Francisco, Wu, Hung-Chin, Wang, Ging-Ji Nathan, Yan, Hongping, Shaw, Leo, Xu, Jie, Toney, Michael F., and Bao, Zhenan. Enhancing Molecular Alignment and Charge Transport of Solution-Sheared Semiconducting Polymer Films by the Electrical-Blade Effect. United States: N. p., 2018. Web. doi:10.1002/aelm.201800110.
Molina-Lopez, Francisco, Wu, Hung-Chin, Wang, Ging-Ji Nathan, Yan, Hongping, Shaw, Leo, Xu, Jie, Toney, Michael F., & Bao, Zhenan. Enhancing Molecular Alignment and Charge Transport of Solution-Sheared Semiconducting Polymer Films by the Electrical-Blade Effect. United States. doi:10.1002/aelm.201800110.
Molina-Lopez, Francisco, Wu, Hung-Chin, Wang, Ging-Ji Nathan, Yan, Hongping, Shaw, Leo, Xu, Jie, Toney, Michael F., and Bao, Zhenan. Mon . "Enhancing Molecular Alignment and Charge Transport of Solution-Sheared Semiconducting Polymer Films by the Electrical-Blade Effect". United States. doi:10.1002/aelm.201800110. https://www.osti.gov/servlets/purl/1463390.
@article{osti_1463390,
title = {Enhancing Molecular Alignment and Charge Transport of Solution-Sheared Semiconducting Polymer Films by the Electrical-Blade Effect},
author = {Molina-Lopez, Francisco and Wu, Hung-Chin and Wang, Ging-Ji Nathan and Yan, Hongping and Shaw, Leo and Xu, Jie and Toney, Michael F. and Bao, Zhenan},
abstractNote = {Controlling polymer chain alignment through processing is a means of tuning the charge transport of solution-based conjugated polymers. In this work, a processing strategy is proposed in which an external electric field (E-field) is applied to the coating blade (E-blade) to align polymer chain during solution-shearing, a meniscus-guided coating technique. A theoretical model based on dielectrophoresis quantitatively describes and predicts the alignment process and is used to guide the selection of the optimal conditions of the applied E-field. Using these conditions, more than two-fold increase in chain alignment is observed for E-bladed thin films of a diketopyrrolopyrrole (DPP) semiconducting polymer without affecting other morphological aspects such as film thickness, film coverage or fiber-like aggregation. Organic field effect transistors based on the E-bladed DPP polymer are fabricated at ambient conditions and over areas of a few cm2. They display a 3-fold improvement in their mobilities and a strong enhancement in charge transport anisotropy compared to films prepared without E-field. These results reveal a synergistic alignment effect from both the solution-shearing process and the applied E-field, and introduce a novel and general approach to control the morphology and the electrical properties of solutioncoated conjugated polymer thin films.},
doi = {10.1002/aelm.201800110},
journal = {Advanced Electronic Materials},
number = 7,
volume = 4,
place = {United States},
year = {2018},
month = {5}
}

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Cited by: 4 works
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Works referenced in this record:

The path to ubiquitous and low-cost organic electronic appliances on plastic
journal, April 2004


A High Mobility P-Type DPP-Thieno[3,2-b]thiophene Copolymer for Organic Thin-Film Transistors
journal, August 2010

  • Li, Yuning; Singh, Samarendra P.; Sonar, Prashant
  • Advanced Materials, Vol. 22, Issue 43
  • DOI: 10.1002/adma.201002313

A stable solution-processed polymer semiconductor with record high-mobility for printed transistors
journal, October 2012

  • Li, Jun; Zhao, Yan; Tan, Huei Shuan
  • Scientific Reports, Vol. 2, Issue 1
  • DOI: 10.1038/srep00754

Mobility overestimation due to gated contacts in organic field-effect transistors
journal, March 2016

  • Bittle, Emily G.; Basham, James I.; Jackson, Thomas N.
  • Nature Communications, Vol. 7, Issue 1
  • DOI: 10.1038/ncomms10908

Alignment and Charge Transport of One-Dimensional Conjugated Polymer Nanowires in Insulating Polymer Blends
journal, December 2016


Inducing Elasticity through Oligo-Siloxane Crosslinks for Intrinsically Stretchable Semiconducting Polymers
journal, August 2016

  • Wang, Ging-Ji Nathan; Shaw, Leo; Xu, Jie
  • Advanced Functional Materials, Vol. 26, Issue 40
  • DOI: 10.1002/adfm.201602603

Flow-enhanced solution printing of all-polymer solar cells
journal, August 2015

  • Diao, Ying; Zhou, Yan; Kurosawa, Tadanori
  • Nature Communications, Vol. 6, Issue 1
  • DOI: 10.1038/ncomms8955

Large-Scale Assembly of Single Nanowires through Capillary-Assisted Dielectrophoresis
journal, November 2014

  • Collet, Maéva; Salomon, Sven; Klein, Naiara Yohanna
  • Advanced Materials, Vol. 27, Issue 7
  • DOI: 10.1002/adma.201403039

Highly stretchable polymer semiconductor films through the nanoconfinement effect
journal, January 2017


Diketopyrrolopyrrole (DPP) functionalized tetrathienothiophene (TTA) small molecules for organic thin film transistors and photovoltaic cells
journal, January 2015

  • Zhou, Nanjia; Vegiraju, Sureshraju; Yu, Xinge
  • Journal of Materials Chemistry C, Vol. 3, Issue 34
  • DOI: 10.1039/C5TC01348H

Electric Field-Assisted Alignment of Self-Assembled Fibers Composed of Hydrogen-Bonded Molecules Having Laterally Fluorinated Mesogens
journal, May 2009

  • Yoshio, Masafumi; Shoji, Yoshiko; Tochigi, Yusuke
  • Journal of the American Chemical Society, Vol. 131, Issue 19
  • DOI: 10.1021/ja8093718

Electric field directed formation of aligned conjugated polymer fibers
journal, January 2017


Electric Field Tuning Molecular Packing and Electrical Properties of Solution-Shearing Coated Organic Semiconducting Thin Films
journal, January 2017

  • Molina-Lopez, Francisco; Yan, Hongping; Gu, Xiaodan
  • Advanced Functional Materials, Vol. 27, Issue 8
  • DOI: 10.1002/adfm.201605503

Macroscopic Alignment of One-Dimensional Conjugated Polymer Nanocrystallites for High-Mobility Organic Field-Effect Transistors
journal, May 2016

  • Chang, Mincheol; Choi, Dalsu; Egap, Eilaf
  • ACS Applied Materials & Interfaces, Vol. 8, Issue 21
  • DOI: 10.1021/acsami.6b02216

Design of High-Mobility Diketopyrrolopyrrole-Based π-Conjugated Copolymers for Organic Thin-Film Transistors
journal, May 2015


Critical Role of Surface Energy in Guiding Crystallization of Solution-Coated Conjugated Polymer Thin Films
journal, October 2017


High mobility diketopyrrolopyrrole (DPP)-based organic semiconductor materials for organic thin film transistors and photovoltaics
journal, January 2013

  • Li, Yuning; Sonar, Prashant; Murphy, Leanne
  • Energy & Environmental Science, Vol. 6, Issue 6
  • DOI: 10.1039/c3ee00015j

From Convective Assembly to Landau−Levich Deposition of Multilayered Phospholipid Films of Controlled Thickness
journal, March 2009

  • Le Berre, Maël; Chen, Yong; Baigl, Damien
  • Langmuir, Vol. 25, Issue 5
  • DOI: 10.1021/la803646e

Design directed self-assembly of donor–acceptor polymers
journal, January 2016

  • Marszalek, Tomasz; Li, Mengmeng; Pisula, Wojciech
  • Chemical Communications, Vol. 52, Issue 73
  • DOI: 10.1039/C6CC04523E

Electric field induced optical anisotropy of P3HT nanofibers in a liquid solution
journal, January 2015

  • Lobov, G. S.; Zhao, Y.; Marinins, A.
  • Optical Materials Express, Vol. 5, Issue 11
  • DOI: 10.1364/OME.5.002642

On the Extraction of Charge Carrier Mobility in High-Mobility Organic Transistors
journal, November 2015

  • Uemura, Takafumi; Rolin, Cedric; Ke, Tung-Huei
  • Advanced Materials, Vol. 28, Issue 1
  • DOI: 10.1002/adma.201503133

Alignment of photoconductive self-assembled fibers composed of π-conjugated molecules under electric fields
journal, January 2010

  • Shoji, Yoshiko; Yoshio, Masafumi; Yasuda, Takuma
  • J. Mater. Chem., Vol. 20, Issue 1
  • DOI: 10.1039/B915822G

Taming Charge Transport in Semiconducting Polymers with Branched Alkyl Side Chains
journal, July 2017

  • Schroeder, Bob C.; Kurosawa, Tadanori; Fu, Tianren
  • Advanced Functional Materials, Vol. 27, Issue 34
  • DOI: 10.1002/adfm.201701973

A general relationship between disorder, aggregation and charge transport in conjugated polymers
journal, August 2013

  • Noriega, Rodrigo; Rivnay, Jonathan; Vandewal, Koen
  • Nature Materials, Vol. 12, Issue 11
  • DOI: 10.1038/nmat3722

Electric field-assisted self-organization of polymer:fullerene hybrids on the photovoltaic performance
journal, January 2011

  • Lin, Chih-Cheng; Lin, Yun-Yue; Li, Shao-Sian
  • Energy & Environmental Science, Vol. 4, Issue 6
  • DOI: 10.1039/c1ee01183a

Low band-gap conjugated polymer based on diketopyrrolopyrrole units and its application in organic photovoltaic cells
journal, January 2017

  • Zhang, Hao; Zhang, Shaoqing; Gao, Ke
  • Journal of Materials Chemistry A, Vol. 5, Issue 21
  • DOI: 10.1039/C7TA01250K

Directed crystallization of poly(3-hexylthiophene) in micrometre channels under confinement and in electric fields
journal, January 2012

  • Fischer, Florian S. U.; Tremel, Kim; Sommer, Michael
  • Nanoscale, Vol. 4, Issue 6
  • DOI: 10.1039/c2nr12037b

Crystalline Ultrasmooth Self-Assembled Monolayers of Alkylsilanes for Organic Field-Effect Transistors
journal, July 2009

  • Ito, Yutaka; Virkar, Ajay A.; Mannsfeld, Stefan
  • Journal of the American Chemical Society, Vol. 131, Issue 26
  • DOI: 10.1021/ja9029957

Field-Force Alignment of Disc-Type π Systems
journal, March 2007

  • Cristadoro, Anna; Lieser, Günter; Räder, Hans Joachim
  • ChemPhysChem, Vol. 8, Issue 4
  • DOI: 10.1002/cphc.200600612

Understanding Interfacial Alignment in Solution Coated Conjugated Polymer Thin Films
journal, August 2017

  • Qu, Ge; Zhao, Xikang; Newbloom, Gregory M.
  • ACS Applied Materials & Interfaces, Vol. 9, Issue 33
  • DOI: 10.1021/acsami.7b08133

Direct Uniaxial Alignment of a Donor–Acceptor Semiconducting Polymer Using Single-Step Solution Shearing
journal, March 2016

  • Shaw, Leo; Hayoz, Pascal; Diao, Ying
  • ACS Applied Materials & Interfaces, Vol. 8, Issue 14
  • DOI: 10.1021/acsami.6b01607

Experimental evidence that short-range intermolecular aggregation is sufficient for efficient charge transport in conjugated polymers
journal, August 2015

  • Wang, Suhao; Fabiano, Simone; Himmelberger, Scott
  • Proceedings of the National Academy of Sciences, Vol. 112, Issue 34
  • DOI: 10.1073/pnas.1501381112

The meniscus-guided deposition of semiconducting polymers
journal, February 2018


Organic transistors with high thermal stability for medical applications
journal, January 2012

  • Kuribara, Kazunori; Wang, He; Uchiyama, Naoya
  • Nature Communications, Vol. 3, Issue 1
  • DOI: 10.1038/ncomms1721

Charge-Transport Anisotropy in a Uniaxially Aligned Diketopyrrolopyrrole-Based Copolymer
journal, October 2015


The impact of molecular weight on microstructure and charge transport in semicrystalline polymer semiconductors–poly(3-hexylthiophene), a model study
journal, December 2013


Morphological modification induced by external electric field during solution process of organic solar cells
journal, February 2012


Electric-Field-Assisted Position and Orientation Control of Organic Single Crystals
journal, November 2014

  • Kotsuki, Kenji; Obata, Seiji; Saiki, Koichiro
  • Langmuir, Vol. 30, Issue 47
  • DOI: 10.1021/la503286y

Diketopyrrolopyrrole-based polymer transistors for hazardous volatile organic compound detection
journal, December 2017


Aggregation control in natural brush-printed conjugated polymer films and implications for enhancing charge transport
journal, November 2017

  • Wang, Gang; Huang, Wei; Eastham, Nicholas D.
  • Proceedings of the National Academy of Sciences, Vol. 114, Issue 47
  • DOI: 10.1073/pnas.1713634114

General Strategy for Self-Assembly of Highly Oriented Nanocrystalline Semiconducting Polymers with High Mobility
journal, April 2014

  • Luo, Chan; Kyaw, Aung Ko Ko; Perez, Louis A.
  • Nano Letters, Vol. 14, Issue 5
  • DOI: 10.1021/nl500758w

Integrated Materials Design of Organic Semiconductors for Field-Effect Transistors
journal, April 2013

  • Mei, Jianguo; Diao, Ying; Appleton, Anthony L.
  • Journal of the American Chemical Society, Vol. 135, Issue 18
  • DOI: 10.1021/ja400881n

    Works referencing / citing this record:

    Conjugated polymer single crystals and nanowires
    journal, February 2019

    • Cao, Xinxiu; Zhao, Kefeng; Chen, Liang
    • POLYMER CRYSTALLIZATION, Vol. 2, Issue 3
    • DOI: 10.1002/pcr2.10064

    Conjugated polymer single crystals and nanowires
    journal, February 2019

    • Cao, Xinxiu; Zhao, Kefeng; Chen, Liang
    • POLYMER CRYSTALLIZATION, Vol. 2, Issue 3
    • DOI: 10.1002/pcr2.10064