Chemistry Letters, Vol.37, No.3, 284-285, 2008
2,6-dialkylbenzo[1,2-b : 4,5-b']dithiophenes (C-n-BDTs) as soluble organic semiconductors for solution-processed organic field-effect transistors
2,6-Dialkyl[1,2-b:4,5-b']dithiophenes were synthesized as novel solution-processible organic semiconductors. Thin films of the organic semiconductors deposited on Si/SiO2 substrates by spin coating have well-ordered structures as confirmed by XRD analysis. Evaluations of the devices under ambient conditions showed typical p-channel FET responses with the field-effect mobility of ca. 10(-2) cm(2) V-1 s(-1) and I-on/I-off of ca. 10(5).