journal article·2026-04-15

Interfacial Siloxane Interactions to Enhance Semiconductor Ordering and Performance in Organic Thin-Film Transistors

Laura E. Dickson, Hyungjun Cho, Nicolas Ledos, Vittoria-Ann DiPalo, Kannan Udaya Mohanan, Joseph G. Manion, Kamatham Narayanaswamy, Stéphane Méry, Nicolas Leclerc, Chang-Hyun Kim, Benoît H. Lessard

ACS Applied Materials & Interfaces· Volume 18· Issue 14
Publisher page

Abstract

Achieving low-power, high-mobility organic thin-film transistors requires control over the buried interface between the semiconductor and the dielectric layers. Here, we demonstrate that siloxane-based molecular design provides a powerful means of engineering interfacial compatibility and charge transport. By integrating siloxane-functionalized diketopyrrolopyrrole (DPP) semiconductors with a PDMS-based polyionic liquid (PIL) dielectric, we show that siloxane-siloxane interactions promote enhanced molecular ordering, increased crystal coherence, and improved charge-carrier mobility of the semiconductor. Grazing-incidence wide-angle X-ray scattering and Raman morphological analyses indicate that interfacial interactions drive coherent stacking and reduce the level of disorder at the interface. This interfacial design strategy offers a general approach to tuning interfaces through conjugated polymer/dielectric systems, offering insight into strategies for the development of low-voltage, high-performance organic electronics.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Organic Electronics and Photovoltaics · Conducting polymers and applications · Thin-Film Transistor Technologies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemical and Biological Engineering, University of Ottawa, 161 Louis Pasteur, Ottawa, Ontario K1N 6N5, Canada

Department of Chemistry and Biomolecular Sciences, University of Ottawa, 150 Louis Pasteur, Ottawa, Ontario K1N 6N5, Canada

School of Electrical Engineering and Computer Science, University of Ottawa, 800 King Edward Ave, Ottawa, Ontario K1N 6N5, Canada

Institut de Physique et Chimie des Matériaux de Strasbourg, CNRS − Université de Strasbourg, UMR7504, 23 Rue du Loess, Strasbourg 67034, France

Department of Chemistry

SRM University-AP

Institut de Chimie et Procédés pour l’Energie, l’Environnement et la Santé, CNRS − Université de Strasbourg- ECPM, UMR7515, 25 Rue Becquerel, Strasbourg 67087, France

Funding

Canada Foundation for Innovation · Natural Sciences and Engineering Research Council of Canada

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