Look fast: Crystallization of conjugated molecules during solution shearing probed in-situ and in real time by X-ray scattering

Detlef M. Smilgies, Ruipeng Li, Gaurav Giri, Kang Wei Chou, Ying Diao, Zhenan Bao, Aram Amassian

Research output: Contribution to journalArticle

Abstract

High-speed solution shearing, in which a drop of dissolved material is spread by a coating knife onto the substrate, has emerged as a versatile, yet simple coating technique to prepare high-mobility organic thin film transistors. Solution shearing and subsequent drying and crystallization of a thin film of conjugated molecules is probed in situ using microbeam grazing incidence wide-angle X-ray scattering (μGIWAXS). We demonstrate the advantages of this approach to study solution based crystal nucleation and growth, and identify casting parameter combinations to cast highly ordered and laterally aligned molecular thin films.

Original languageEnglish (US)
Pages (from-to)177-179
Number of pages3
JournalPhysica Status Solidi - Rapid Research Letters
Volume7
Issue number3
DOIs
StatePublished - Mar 2013

Keywords

  • Conjugated molecules
  • Crystallization
  • Organic semiconductors
  • Solution processing
  • X-ray scattering

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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