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Interfacial Siloxane Interactions to Enhance Semiconductor Ordering and Performance in Organic Thin-Film Transistors
DOI:10.1021/acsami.6c01543.png)
Abstract
En 中文
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.
Keywords:
Insulators
Interfaces
Polymers
Semiconductors
Transistors
interfacial engineering
siloxane interactions
organic thin-film transistors
diketopyrrolopyrrole (DPP)
polyionic liquid (PIL)
Journal
A
IF:
0
Papers:
1.6K
Citations:
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