Heterogeneous Nucleation Promotes Carrier Transport in Solution‐Processed Organic Field‐Effect Transistors. (4th September 2012)

• Record Type: Journal Article
• Authors: Li, Ruipeng; Khan, Hadayat Ullah; Payne, Marcia M.; Smilgies, Detlef‐M.; Anthony, John E.; Amassian, Aram
• Is Part Of: Advanced functional materials. Volume 23:Number 3(2013)
• Page Start: 291
• Page End: 297
• Publication Date: 2012-09-04
• Subjects: Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.201201264
• Languages: English
• ISSNs: 1616-301X

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>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.</p> </abstract>