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Heterogeneous Nucleation Promotes Carrier Transport in Solution-Processed Organic Field-Effect Transistors

  1. Ruipeng Li1,
  2. Hadayat Ullah Khan1,
  3. Marcia M. Payne3,
  4. Detlef-M. Smilgies2,
  5. John E. Anthony3,
  6. Aram Amassian1,*

Article first published online: 4 SEP 2012

DOI: 10.1002/adfm.201201264

Issue

Advanced Functional Materials

Advanced Functional Materials

Volume 23, Issue 3, pages 291–297, January 21, 2013

Additional Information

How to Cite

Li, R., Khan, H. U., Payne, M. M., Smilgies, D.-M., Anthony, J. E. and Amassian, A. (2013), Heterogeneous Nucleation Promotes Carrier Transport in Solution-Processed Organic Field-Effect Transistors. Adv. Funct. Mater., 23: 291–297. doi: 10.1002/adfm.201201264

Author Information

  1. 1

    Materials Science and Engineering Program, Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia

  2. 2

    Cornell High Energy Synchrotron Source, Cornell University, Ithaca, NY 14850, USA

  3. 3

    Department of Chemistry, University of Kentucky, Lexington, KY 40506, USA

*Materials Science and Engineering Program, Division of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia.

Publication History

  1. Issue published online: 11 JAN 2013
  2. Article first published online: 4 SEP 2012
  3. Manuscript Revised: 24 JUL 2012
  4. Manuscript Received: 9 MAY 2012

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Keywords:

  • solution processing;
  • thin-film growth;
  • organic field-effect transistors;
  • in situ characterization;
  • Avrami model

Abstract

A new way to investigate and control the growth of solution-cast thin films is presented. The combination of in situ quartz crystal microbalance measurements with dissipation capabilities (QCM-D) and in situ grazing-incidence wide-angle X-ray scattering (GIWAXS) in an environmental chamber provides unique quantitative insights into the time-evolution of the concentration of the solution, the onset of nucleation, and the mode of growth of the organic semiconductor under varied drying conditions. It is demonstrated that careful control over the kinetics of solution drying enhances carrier transport significantly by promoting phase transformation predominantly via heterogeneous nucleation and sustained surface growth of a highly lamellar structure at the solid-liquid interface at the expense of homogeneous nucleation.

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