Electrical Transport in Polymer-Covered Silicon Nanowires
| Autor: | P. Ding, Zahid A. K. Durrani, Kristel Fobelets, N. Mohseni Kiasari |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Conductive polymer
chemistry.chemical_classification Materials science Silicon technology industry and agriculture Nanowire chemistry.chemical_element macromolecular substances Polymer Polyethylene Conductivity Computer Science Applications Organic semiconductor chemistry.chemical_compound chemistry Chemical engineering Polymer chemistry Polystyrene Electrical and Electronic Engineering |
| Zdroj: | IEEE Transactions on Nanotechnology. 11:661-665 |
| ISSN: | 1941-0085 1536-125X |
| Popis: | The influence of polymer layers wrapped around n-type Si nanowires (NW) on their electrical characteristics is investigated. The NWs are fabricated via metal induced excessive oxidation and dissolution of Si, and have a diameter of ~350 nm. Single wires are covered by various polymer layers. The polymers used are both insulating [poly (methyl methacrylate) (PMMA), polyethylene (PE), polystyrene, and polyethylene oxide (PEO)] and semiconducting poly (3,4-ethylenedioxythiophene):poly (styrenesulfonate). Four-point probe measurements are used to measure the conductivity changes of single NWs. The NW resistivity increases with PE and PMMA coverage, but decreases with PEO coverage. The changes are attributed to carrier exchange between the polymer and NW. The measurements also confirm active electron trapping with PE coverage that is not observed with the other polymers. |
| Databáze: | OpenAIRE |
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