Journal
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS
Volume 46, Issue 17-19, Pages L396-L398Publisher
INST PURE APPLIED PHYSICS
DOI: 10.1143/JJAP.46.L396
Keywords
carbon-nanotube; semiconductive polymer; organic FET; mobility; dispersion
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We fabricated organic field effect transistors (FETs) using semiconductive polymers incorporating small amounts of single-walled carbon nanotubes (SCNTs) as an active layer. Poly(3-hexyl-thiophene) (P3HT) and poly(3,3 ''-dioctyl-terthiophene) (PDTT) were used as matrix semiconductive polymers. The mobility of the FETs was increased by more than two orders of magnitude maintaining high on-off ratios of over 105 by incorporation of SCNTs into the polymers. Uniform dispersion of SCNTs into the semi-conductive polymers was essential for this enhancement of FET mobility, which was attained by use of SCNTs wrapped with P3HT (SCNT-complex).
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