Synthesis, Characterization Of 9, 9 '-Bianthracene And Fabrication Of 9, 9 '-Bianthracene Field-Effect Transistors
CHINESE PHYSICS LETTERS(2008)
Abstract
We synthesize and purify 9, 9'-bianthracene with the purity upto 96.4%. The electronic and crystallographic structures of 9, 9'-bianthracene are studied. The results of a joint experimental investigation based on a combination of x- ray diffraction (XRD) spectra, hydrogen nuclear magnetic (HNMR) spectra, infrared absorption (FT-IR) spectra, and mass spectra (MS) of 9,9'-bianthracene are obtained. The uniform compact film is observed by an atomic-force microscope (AFM). Organic field effect transistors (OFETs) with an active layer based on the synthesized 9, 9'-bianthracene are fabricated for the first time. Its field-effect mobility is as large as 0.067 cm(2)/(V.s) and the on/off ratio is above 5 x 10(4). The result demonstrates that the oligomerization of a small semiconductor molecule is an effective method to develop high-mobility organic semiconductors.
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