Carrier transport of carbon nanotube embedded organic semiconductor composite. (June 2017)

• Record Type: Journal Article
• Authors: Song, Young Seok; Bok, Moonjeong; Lim, Eunju
• Is Part Of: Materials research bulletin. Volume 90(2017)
• Page Start: 232
• Page End: 236
• Publication Date: 2017-06
• Subjects: A. Composites -- A. Nanostructures -- A. Semiconductors -- B. Semiconductivity -- D. Electrical properties; Materials -- Periodicals; Crystal growth -- Periodicals; Matériaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Crystal growth; Materials; Periodicals; 620.11
• DOI: 10.1016/j.materresbull.2017.03.009
• Languages: English
• ISSNs: 0025-5408

Abstract

Graphical abstract: Highlights: The carrier transport of an organic semiconductor composite was investigated. The TIPS/CNT composites offered enhanced DC electrical conductivity. The carrier trapping of the composite increased by embedding CNTs. Abstract: This study exploits the carrier transport of an organic semiconductor composite incorporated with carbon nanomaterials. Carbon nanotubes (CNTs) were employed as a conductive inorganic nanofiller, and 6, 13-Bis(triisopropylsilylethynyl)pentacene (TIPS) was applied as an organic semiconducting material to evaluate gate-voltage (VGS ) of field effect transistors (FETs). The direct current (DC) electrical conductivity was controlled by adding the CNTs into the composite, and the resulting characteristics of terminals, sources and drain-source voltage (VDS ) of transistors were evaluated. Our experimental results revealed that the TIPS/CNT composites offered enhanced DC electrical conductivity, e.g., above 0.195 S/m. These findings demonstrated that the carrier trapping of the organic semiconductor significantly increased by embedding CNTs. The TIPS and TIPS/CNT OFETs were analyzed using the Maxwell-Wagner model to understand the carrier mechanisms in the CNTs embedded OFET device.