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Open AccessArticle

Effects of Solvent Vapor Annealing on Morphology and Charge Transport of Poly(3-hexylthiophene) (P3HT) Films Incorporated with Preformed P3HT Nanowires

by Mingu Jang 1, Yang-Il Huh 1,2,* and Mincheol Chang 1,2,3,*
1
Department of Polymer Engineering, Graduate School, Chonnam National University, Gwangju 61186, Korea
2
School of Polymer Science and Engineering, Chonnam National University, Gwangju 61186, Korea
3
Alan G. MacDiarmid Energy Research Institute, Chonnam National University, Gwangju 61186, Korea
*
Authors to whom correspondence should be addressed.
Polymers 2020, 12(5), 1188; https://doi.org/10.3390/polym12051188
Received: 23 April 2020 / Revised: 14 May 2020 / Accepted: 19 May 2020 / Published: 22 May 2020
(This article belongs to the Special Issue Polymeric Materials for Electrical Applications)
We systematically studied the influence of solvent vapor annealing on the molecular ordering, morphologies, and charge transport properties of poly(3-hexylthiophene) (P3HT) thin films embedded with preformed crystalline P3HT nanowires (NWs). Solvent vapor annealing (SVA) with chloroform (CF) was found to profoundly impact on the structural and morphological changes, and thus on the charge transport characteristics, of the P3HT-NW-embedded P3HT films. With increased annealing time, the density of crystalline P3HT NWs was increased within the resultant films, and also intra- and intermolecular interactions of the corresponding films were significantly improved. As a result, the P3HT-NW-embedded P3HT films annealed with CF vapor for 20 min resulted in a maximized charge carrier mobility of ~0.102 cm2 V−1 s−1, which is higher than that of pristine P3HT films by 4.4-fold (μ = ~0.023 cm2 V−1 s−1). View Full-Text
Keywords: solvent vapor annealing; poly(3-hexylthiophene); molecular ordering; morphology; organic field-effect transistors solvent vapor annealing; poly(3-hexylthiophene); molecular ordering; morphology; organic field-effect transistors
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MDPI and ACS Style

Jang, M.; Huh, Y.-I.; Chang, M. Effects of Solvent Vapor Annealing on Morphology and Charge Transport of Poly(3-hexylthiophene) (P3HT) Films Incorporated with Preformed P3HT Nanowires. Polymers 2020, 12, 1188.

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