Solution-Processed Organic and Halide Perovskite Transistors on Hydrophobic Surfaces

Jeremy W. Ward, Hannah L. Smith, Andrew Zeidell, Peter J. Diemer, Stephen R. Baker, Hyunsu Lee, Marcia M. Payne, John E. Anthony, Martin Guthold, Oana D. Jurchescu

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

Solution-processable electronic devices are highly desirable due to their low cost and compatibility with flexible substrates. However, they are often challenging to fabricate due to the hydrophobic nature of the surfaces of the constituent layers. Here, we use a protein solution to modify the surface properties and to improve the wettability of the fluoropolymer dielectric Cytop. The engineered hydrophilic surface is successfully incorporated in bottom-gate solution-deposited organic field-effect transistors (OFETs) and hybrid organic-inorganic trihalide perovskite field-effect transistors (HTP-FETs) fabricated on flexible substrates. Our analysis of the density of trapping states at the semiconductor-dielectric interface suggests that the increase in the trap density as a result of the chemical treatment is minimal. As a result, the devices exhibit good charge carrier mobilities, near-zero threshold voltages, and low electrical hysteresis.

Original languageEnglish
Pages (from-to)18120-18126
Number of pages7
JournalACS Applied Materials and Interfaces
Volume9
Issue number21
DOIs
StatePublished - May 31 2017

Bibliographical note

Publisher Copyright:
© 2017 American Chemical Society.

Keywords

  • charge carrier mobility
  • flexible electronics
  • halide perovskites
  • organic semiconductors
  • organic thin-film transistors

ASJC Scopus subject areas

  • General Materials Science

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