Self-Assembled Photochromic Molecular Dipoles for High Performance Polymer Thin-Film Transistors

Satyaprasad P. Senanayak, Vinod Sangwan, Julian J. McMorrow, Ken Everaerts, Zhihua Chen, Antonio Facchetti, Mark C Hersam, Tobin J Marks, Kavassery Sureswaran Narayan

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The development of high performance multifunctional polymer-based electronic circuits is a major step towards future flexible electronics. Here, we demonstrate a tunable approach to fabricate such devices based on rationally designed dielectric super-lattice structures with photochromic azo-benzene molecules. These nanodielectrics possessing ionic, molecular, and atomic polarization are utilized in polymer thin-film transistors (TFTs) to realize high performance electronics with p-type field-effect mobility (μFET) exceeding 2 cm2V-1s-1. A crossover in the transport mechanism from electrostatic dipolar disorder to ionic-induced disorder is observed in the transistor characteristics over a range of temperatures. The facile supramolecular design allows the possibility to optically control the extent of molecular and ionic polarization in the ultra-thin nanodielectric. Thus, we demonstrate a three-fold increase in the capacitance from 0.1 μF/cm2 to 0.34 μF/cm2, which results in a 200% increase in TFT channel current.

Original languageEnglish
JournalACS Applied Materials and Interfaces
DOIs
Publication statusAccepted/In press - Apr 3 2018

Fingerprint

Thin film transistors
Polymer films
Polarization
Flexible electronics
Benzene
Electrostatics
Polymers
Transistors
Capacitance
Electronic equipment
Molecules
Networks (circuits)
Temperature

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Senanayak, S. P., Sangwan, V., McMorrow, J. J., Everaerts, K., Chen, Z., Facchetti, A., ... Narayan, K. S. (Accepted/In press). Self-Assembled Photochromic Molecular Dipoles for High Performance Polymer Thin-Film Transistors. ACS Applied Materials and Interfaces. https://doi.org/10.1021/acsami.8b05401

Self-Assembled Photochromic Molecular Dipoles for High Performance Polymer Thin-Film Transistors. / Senanayak, Satyaprasad P.; Sangwan, Vinod; McMorrow, Julian J.; Everaerts, Ken; Chen, Zhihua; Facchetti, Antonio; Hersam, Mark C; Marks, Tobin J; Narayan, Kavassery Sureswaran.

In: ACS Applied Materials and Interfaces, 03.04.2018.

Research output: Contribution to journalArticle

Senanayak, Satyaprasad P. ; Sangwan, Vinod ; McMorrow, Julian J. ; Everaerts, Ken ; Chen, Zhihua ; Facchetti, Antonio ; Hersam, Mark C ; Marks, Tobin J ; Narayan, Kavassery Sureswaran. / Self-Assembled Photochromic Molecular Dipoles for High Performance Polymer Thin-Film Transistors. In: ACS Applied Materials and Interfaces. 2018.
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AU - Chen, Zhihua

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