Affiliation:
1. Inner Mongolia Normal University
2. Tokyo Institute of Technology
Abstract
In this work, tetraphenyldiphenoquinone (DPQ) was synthesized and characterized by single crystal structure analysis, ultraviolet–visible spectroscopy (UV–Vis) and cyclic voltammetry (CV). DPQ–based organic field-effect transistors (OFET) were fabricated with bottom contact configuration using bare SiO2/Si substrate and hexamethyldisilazane (HMDS) treated substrate, respectively. The HMDS-treated device showed hole mobility of 8.7 × 10−7 cm2 V−1 s−1, current on/off ratio of 1.2 × 102 and threshold voltage of −39 V. Devices with bare substrate showed no FET behaviors. Finally, film morphology was investigated by X-ray diffraction (XRD) analyses and the results showed that the HMDS treatment exhibits better crystallinity of DPQ on the film thus obtaining FET performance.
Publisher
Trans Tech Publications, Ltd.
Subject
Condensed Matter Physics,General Materials Science,Atomic and Molecular Physics, and Optics