Ultrasound-Induced Organogel Formation Followed by Thin Film Fabrication via Simple Doctor Blading Technique for Field-Effect Transistor Applications
journal contributionposted on 05.07.2016, 00:00 by Jiaju Xu, Yulong Wang, Haiquan Shan, Yiwei Lin, Qian Chen, V. A. L. Roy, Zongxiang Xu
We demonstrate doctor blading technique to fabricate high performance transistors made up of printed small molecular materials. In this regard, we synthesize a new soluble phthalocyanine, tetra-n-butyl peripheral substituted copper(II) phthalocaynine (CuBuPc), that can easily undergo gel formation upon ultrasonic irradiation, leading to the formation of three-dimensional (3D) network composed of one-dimensional (1D) nanofibers structure. Finally, taking the advantage of thixotropic nature of the CuBuPc organogel, we use the doctor blade processing technique that limits the material wastage for the fabrication of transistor devices. Due to the ultrasound induced stronger π–π interaction, the transistor fabricated by doctor blading based on CuBuPc organogel exhibits significant increase in charge carrier mobility in comparison with other solution process techniques, thus paving a way for a simple and economically viable preparation of electronic circuits.
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doctor blading techniquedoctor blade processing techniquetransistor devicesthixotropic naturecharge carrier mobilityCuBuPc organogelnanofibers structureCuBuPc organogel exhibitsmaterial wastageThin Film Fabricationperformance transistorsgel formationdoctor bladingsolution process techniquesSimple Doctor Blading Technique