title: Design criteria for transparent single-wall carbon nanotube thin-film transistors.
abstract: A study based on two-dimensional percolation theory yielding quantitative parameters for optimum connectivity of transparent single-wall carbon nanotube (SWNT) thin films is reported. Optimum SWNT concentration in the filtrated solution was found to be 0.1 mg/L with a volume of 30 mL. Such parameters lead to SWNT fractions in the films of approximately Phi = 1.8 x 10(-3), much below the metallic percolation threshold, which is found to be approximately PhiC = 5.5 x 10(-3). Therefore, the performance of transparent carbon nanotube thin-film transistors is limited by the metallic SWNTs, even below their percolation threshold. We show how this effect is related to hopping or tunneling between neighboring metallic tubes.
authors.affiliation: Materials Science and Engineering, Rutgers University, Piscataway, New Jersey 08854, USA.
authors.forename: Husnu Emrah
authors.initials: HE
authors.lastname: Unalan
authors.forename: Giovanni
authors.initials: G
authors.lastname: Fanchini
authors.forename: Alokik
authors.initials: A
authors.lastname: Kanwal
authors.forename: Aurelien
authors.initials: A
authors.lastname: Du Pasquier
authors.forename: Manish
authors.initials: M
authors.lastname: Chhowalla
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D003460:Crystallization / Q000379:methods*; D004553:Electric Conductivity; D004563:Electrochemistry / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008422:Materials Testing; D008956:Models, Chemical; D036103:Nanotechnology / Q000295:instrumentation* / Q000379:methods; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D014173:Transistors, Electronic
chemical_list: D037742:Nanotubes, Carbon