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Electrospun hybrid organic/inorganic semiconductor Schottky nanodiode
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10.1063/1.2227758
/content/aip/journal/apl/89/3/10.1063/1.2227758
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/3/10.1063/1.2227758
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Figures

Image of FIG. 1.
FIG. 1.

Schematic of the prepatterned and then cleaved -doped substrate and the electrospun polymer nanofiber making contacts to the gold electrode above and to the doped Si below the oxide layer. The real fiber is flexible and does not fracture as it bends over the substrate edge. The external electrical connections are also shown.

Image of FIG. 2.
FIG. 2.

(Color online) (a) Scanning electron microscope image showing a top view of the electrospun nanofiber lying on the gold electrode and extending to and over the wafer edge. (b) Atomic force microscope height image of a section of the fiber indicated by the box in (a) together with a height profile along a selected dark line and shown in part (c). The average fiber diameter was .

Image of FIG. 3.
FIG. 3.

Current-voltage characteristics at of the Schottky diode shown in the previous figure when the positive terminal of was connected to the gold electrode (엯) and when the positive terminal of was connected to the doped Si (◻). Inset: Semilog plot of the forward bias current as a function of forward bias voltage for the case when the positive terminal of was connected to the gold electrode.

Image of FIG. 4.
FIG. 4.

characteristic curve at for a single diameter electrospun polyaniline fiber that makes contacts to two gold electrodes having a separation. The linear response indicates Ohmic contacts, and we calculate a fiber conductivity of . Inset: SEM image of the fiber bridging the two electrodes as seen from above.

Image of FIG. 5.
FIG. 5.

characteristic curves for a Schottky nanodiode when used as a gas sensor and measured in the following sequence: (엯) as prepared sample measured in vacuum, (◻) a few seconds after exposure to ammonia vapor, and (▵) after of pumping.

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/content/aip/journal/apl/89/3/10.1063/1.2227758
2006-07-20
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Electrospun hybrid organic/inorganic semiconductor Schottky nanodiode
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/3/10.1063/1.2227758
10.1063/1.2227758
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