title: Ultrasound-Induced Organogel Formation Followed by Thin Film Fabrication via Simple Doctor Blading Technique for Field-Effect Transistor Applications.
abstract: 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.
authors.affiliation: Department of Chemistry, South University of Science and Technology of China , Shenzhen, P. R. China.
authors.forename: Jiaju
authors.initials: J
authors.lastname: Xu
authors.affiliation: Department of Chemistry, South University of Science and Technology of China , Shenzhen, P. R. China.
authors.forename: Yulong
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Department of Chemistry, South University of Science and Technology of China , Shenzhen, P. R. China.
authors.forename: Haiquan
authors.initials: H
authors.lastname: Shan
authors.affiliation: Department of Chemistry, South University of Science and Technology of China , Shenzhen, P. R. China.
authors.forename: Yiwei
authors.initials: Y
authors.lastname: Lin
authors.affiliation: Department of Chemistry, South University of Science and Technology of China , Shenzhen, P. R. China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Chen
authors.affiliation: Department of Physics and Materials Science, City University of Hong Kong , Hong Kong, SAR.
authors.forename: V A L
authors.initials: VA
authors.lastname: Roy
authors.affiliation: Department of Chemistry, South University of Science and Technology of China , Shenzhen, P. R. China.
authors.forename: Zongxiang
authors.initials: Z
authors.lastname: Xu
keywords: doctor blading; metal phthalocyanine; organic field-effect transistor; organogel; ultrasound