Non‐Conjugated Flexible Linkers in Semiconducting Polymers: A Pathway to Improved Processability without Compromising Device Performance

Schroeder, Bob C.; Chiu, Yu‐Cheng; Gu, Xiaodan; Zhou, Yan; Xu, Jie; Lopez, Jeffrey; Lu, Chien; Toney, Michael F.; Bao, Zhenan

doi:10.1002/aelm.201600104

Title: Non‐Conjugated Flexible Linkers in Semiconducting Polymers: A Pathway to Improved Processability without Compromising Device Performance

Abstract

Semiconducting polymers, in contrast to inorganic silicon, are solution processable and can potentially be printed cost efficiently on flexible large‐area substrates. However to do so it is of paramount importance to formulate the polymeric semiconductors into inks with specific viscosities. Herein, the synthesis of a new highly soluble isoindigo monomer and its incorporation into low bandgap semiconducting polymers is presented. Non‐conjugated flexible linkers are introduced into the conjugated backbone in order to modulate the materials processability. The viscoelastic properties of the new polymers are studied in detail by means of rheometry and dynamical mechanical analysis. The solution viscosity is directly proportional to the content of non‐conjugated linkers in the polymer backbone. In organic field‐effect transistors maximum hole mobilities of 1.7 cm ² V ⁻¹ s ⁻¹ are achieved with the new polymers. Due to the enhanced solubility all‐polymer solar cells are fabricated by solution shearing, reaching power conversion efficiency values of 3.7%.

Authors:

Schroeder, Bob C. ^[1]; Chiu, Yu‐Cheng ^[1]; Gu, Xiaodan ^[2]; Zhou, Yan ^[1]; Xu, Jie ^[1]; Lopez, Jeffrey ^[1]; Lu, Chien ^[1]; Toney, Michael F. ^[3]; Bao, Zhenan ^[1]

Department of Chemical Engineering Stanford University 443 Via Ortega Stanford CA 94305 USA
Department of Chemical Engineering Stanford University 443 Via Ortega Stanford CA 94305 USA, Stanford Synchrotron Radiation Lightsource SLAC National Accelerator Laboratory Menlo Park CA 94025 USA
Stanford Synchrotron Radiation Lightsource SLAC National Accelerator Laboratory Menlo Park CA 94025 USA

Publication Date:: Thu May 19 00:00:00 EDT 2016

Sponsoring Org.:: USDOE

OSTI Identifier:: 1401673

Grant/Contract Number:: DE‐AC02‐76SF00515

Resource Type:: Publisher's Accepted Manuscript

Journal Name:: Advanced Electronic Materials

Additional Journal Information:: Journal Name: Advanced Electronic Materials Journal Volume: 2 Journal Issue: 7; Journal ID: ISSN 2199-160X

Publisher:: Wiley Blackwell (John Wiley & Sons)

Country of Publication:: United States

Language:: English

Citation Formats


                    Schroeder, Bob C., Chiu, Yu‐Cheng, Gu, Xiaodan, Zhou, Yan, Xu, Jie, Lopez, Jeffrey, Lu, Chien, Toney, Michael F., and Bao, Zhenan. Non‐Conjugated Flexible Linkers in Semiconducting Polymers: A Pathway to Improved Processability without Compromising Device Performance.  United States: N. p., 2016. 
Web.  doi:10.1002/aelm.201600104.

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                    Schroeder, Bob C., Chiu, Yu‐Cheng, Gu, Xiaodan, Zhou, Yan, Xu, Jie, Lopez, Jeffrey, Lu, Chien, Toney, Michael F., & Bao, Zhenan. Non‐Conjugated Flexible Linkers in Semiconducting Polymers: A Pathway to Improved Processability without Compromising Device Performance.  United States.  https://doi.org/10.1002/aelm.201600104

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                    Schroeder, Bob C., Chiu, Yu‐Cheng, Gu, Xiaodan, Zhou, Yan, Xu, Jie, Lopez, Jeffrey, Lu, Chien, Toney, Michael F., and Bao, Zhenan. Thu .  
"Non‐Conjugated Flexible Linkers in Semiconducting Polymers: A Pathway to Improved Processability without Compromising Device Performance".  United States.  https://doi.org/10.1002/aelm.201600104.

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@article{osti_1401673,

  title        = {Non‐Conjugated Flexible Linkers in Semiconducting Polymers: A Pathway to Improved Processability without Compromising Device Performance},

  author       = {Schroeder, Bob C. and Chiu, Yu‐Cheng and Gu, Xiaodan and Zhou, Yan and Xu, Jie and Lopez, Jeffrey and Lu, Chien and Toney, Michael F. and Bao, Zhenan},

  abstractNote = {Semiconducting polymers, in contrast to inorganic silicon, are solution processable and can potentially be printed cost efficiently on flexible large‐area substrates. However to do so it is of paramount importance to formulate the polymeric semiconductors into inks with specific viscosities. Herein, the synthesis of a new highly soluble isoindigo monomer and its incorporation into low bandgap semiconducting polymers is presented. Non‐conjugated flexible linkers are introduced into the conjugated backbone in order to modulate the materials processability. The viscoelastic properties of the new polymers are studied in detail by means of rheometry and dynamical mechanical analysis. The solution viscosity is directly proportional to the content of non‐conjugated linkers in the polymer backbone. In organic field‐effect transistors maximum hole mobilities of 1.7 cm 2 V −1 s −1 are achieved with the new polymers. Due to the enhanced solubility all‐polymer solar cells are fabricated by solution shearing, reaching power conversion efficiency values of 3.7%.},

  doi          = {10.1002/aelm.201600104},

  journal      = {Advanced Electronic Materials},

  number       = 7,

  volume       = 2,

  place        = {United States},

  year         = {Thu May 19 00:00:00 EDT 2016},

  month        = {Thu May 19 00:00:00 EDT 2016}

}

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Title: Non‐Conjugated Flexible Linkers in Semiconducting Polymers: A Pathway to Improved Processability without Compromising Device Performance

Abstract

Citation Formats

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

Side-Chain Engineering of Isoindigo-Containing Conjugated Polymers Using Polystyrene for High-Performance Bulk Heterojunction Solar Cells journal, December 2013

Synthesis of copolymer based on naphthalene diimide connected with a non-conjugated flexible linker journal, July 2013

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