title: Impact of SWCNT processing on nanotube-silicon heterojunctions.
abstract: Single-wall carbon nanotube (SWCNT) films are ideal components for thin, flexible, and durable electronic devices. Here, we use a variety of processing approaches to fabricate SWCNT-silicon heterojunctions from both unsorted and chirality-enriched SWCNTs. Through measured structure/processing/property relationships, we quantify the influence of SWCNT purity, alignment and residual doping on device performance and diode characteristics. Our results show that mixed-type unaligned SWCNTs processed in super-acid solvents can achieve state-of-the-art performance. The devices perform comparably to those fabricated from type or chiral-purified SWCNTs, despite what appear to be significant deviations from ideal diode behavior. Our results clarify a direct route for processing nanotube-silicon heterojunctions while providing additional insight into the underlying nature of these devices.
authors.affiliation: Department of Physics, North Dakota State University, Fargo, North Dakota 58108, USA. erik.hobbie@ndsu.edu.
authors.forename: John M
authors.initials: JM
authors.lastname: Harris
authors.affiliation: Department of Chemistry, Rice University, Houston, Texas 77005, USA and Richard E. Smalley Institute for Nanoscale Science and Technology, Rice University, Houston, Texas 77005, USA.
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Headrick
authors.affiliation: Department of Physics, North Dakota State University, Fargo, North Dakota 58108, USA. erik.hobbie@ndsu.edu.
authors.forename: Matthew R
authors.initials: MR
authors.lastname: Semler
authors.affiliation: National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA.
authors.forename: Jeffrey A
authors.initials: JA
authors.lastname: Fagan
authors.affiliation: Department of Chemistry, Rice University, Houston, Texas 77005, USA and Richard E. Smalley Institute for Nanoscale Science and Technology, Rice University, Houston, Texas 77005, USA and Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, USA.
authors.forename: Matteo
authors.initials: M
authors.lastname: Pasquali
authors.affiliation: Department of Physics, North Dakota State University, Fargo, North Dakota 58108, USA. erik.hobbie@ndsu.edu and Department of Coatings & Polymeric Materials, North Dakota State University, Fargo, North Dakota 58108, USA.
authors.forename: Erik K
authors.initials: EK
authors.lastname: Hobbie