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Photoresponse mechanisms of ultraviolet photodetectors based on colloidal ZnO quantum dot-graphene nanocomposites
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10.1063/1.4776651
/content/aip/journal/apl/102/2/10.1063/1.4776651
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/2/10.1063/1.4776651
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Figures

Image of FIG. 1.
FIG. 1.

(a) Scanning electron microscopy image of the ZnO QDs on graphene/PET sheets. The inset presents an enlarged image of the ZnO QDs. (b) Cross-sectional bright-field high-resolution transmission electron microscopy image of ZnO QDs on graphene sheets. The inset presents an enlarged HRTEM image of ZnO QDs on graphene/PET sheets.

Image of FIG. 2.
FIG. 2.

(a) Currents as functions of the applied voltage (I-V) for the UV photodetector in the dark (rectangles) and under illumination by a 365-nm UV light at a power of 6 W (circles). (b) Plot of log currents of Fig. 2(a) as functions of the voltage for the UV photodetector. (c) Reversible switching between the low- and high-resistivity states for the photodetector under an applied voltage of 3 V with and without UV illumination at different times.

Image of FIG. 3.
FIG. 3.

Schematic diagram of the photoresponse mechanisms of the photodetector.

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/content/aip/journal/apl/102/2/10.1063/1.4776651
2013-01-16
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Photoresponse mechanisms of ultraviolet photodetectors based on colloidal ZnO quantum dot-graphene nanocomposites
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/2/10.1063/1.4776651
10.1063/1.4776651
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