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Space charge limited conduction with exponential trap distribution in reduced graphene oxide sheets
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10.1063/1.3484956
/content/aip/journal/apl/97/9/10.1063/1.3484956
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/9/10.1063/1.3484956
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Cartoon of DEP assembly setup. (b) Tapping-mode AFM of a RGO device assembled via DEP. Scale bar represents 500 nm. (c) Height profile of the AFM image shown in Fig. 1(b). (d) Room temperature transfer characteristic of device A.

Image of FIG. 2.
FIG. 2.

(a) Current-Voltage characteristics at different temperatures for device A. (b) curves at different temperatures plotted in semi log scale to clearly show highly symmetric nature of the curves. (c) Current density vs plotted in a log-log scale for different temperatures. The symbols are the experimental points while the solid lines are fits to . Two regions are separated by . For , and the conduction is Ohmic. the conduction is due to SCLC with exponentially distributed trap states. (d) Expanded view of the SCLC regime. For clarity, at 77 K was divided by 1.2.

Image of FIG. 3.
FIG. 3.

Extrapolation of the curves at low temperatures plotted in log-log scale for device A. From this plot, we determine the temperature independent crossover voltage .

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/content/aip/journal/apl/97/9/10.1063/1.3484956
2010-09-01
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Space charge limited conduction with exponential trap distribution in reduced graphene oxide sheets
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/9/10.1063/1.3484956
10.1063/1.3484956
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