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Heterogeneous Nucleation Promotes Carrier Transport in Solution‐Processed Organic Field‐Effect Transistors
Author(s) -
Li Ruipeng,
Khan Hadayat Ullah,
Payne Marcia M.,
Smilgies DetlefM.,
Anthony John E.,
Amassian Aram
Publication year - 2013
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201201264
Subject(s) - nucleation , materials science , quartz crystal microbalance , lamellar structure , chemical engineering , organic semiconductor , chemical physics , scattering , crystal growth , optoelectronics , thermodynamics , composite material , optics , chemistry , physics , adsorption , engineering
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.