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Temperature dependence of the local conductance in nanocrystalline CdSe films
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10.1063/1.3607291
/content/aip/journal/apl/99/1/10.1063/1.3607291
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/1/10.1063/1.3607291
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Typical sets of local I-V characteristics obtained via C-AFM with positive tip bias at different temperatures for two samples, one with average NC radius r = 5.7 nm (a) and the other with r = 5.1 nm (c). The conductance values at high (above Vt, marked by the arrows) and low voltages, GH and GL, derived from the curves in (a) and (c), are presented in (b) and (d), respectively. A schematic of the measurement configuration is shown in the lower inset to (a), whereas in the upper inset, a typical topographic image (80 × 80 nm2) is presented. The inset to (c) shows a blow up of the curves at 300 K and 35 K (crossing the former from below), where the arrows mark the Vt value for each curve.

Image of FIG. 2.
FIG. 2.

(Color online) (a) Current-time I(t) traces taken at 300 K and 30 K, with a tip bias of 10 V on the r = 5.7 nm sample. (b) The same, and the photocurrent under illumination of a λ = 670 nm laser, for the r = 5.1 sample. Note the effect of pre-amplifier saturation above 45 nA.

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/content/aip/journal/apl/99/1/10.1063/1.3607291
2011-07-05
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Temperature dependence of the local conductance in nanocrystalline CdSe films
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/1/10.1063/1.3607291
10.1063/1.3607291
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