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Carrier transport mechanisms of organic bistable devices fabricated utilizing colloidal ZnO quantum dot-polymethylmethacrylate polymer nanocomposites
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Organic bistable devices (OBDs) fabricated utilizing ZnOquantum dots(QDs) embedded in a poly(methyl methacrylate) (PMMA) layer were fabricated by using a spin-coating technique. Transmission electron microscopy images revealed that 5-nm-diameter ZnOQDs were formed inside the PMMA polymer layer. Current-voltage (I-V) measurements on Al/ZnO QDs embedded in PMMA layer/indium-tin-oxide devices at 300 K showed electrical bistability. The maximum ON/OFF ratio of the current bistability for the OBDs was as large as . Carrier transport mechanisms for the OBDs are described by using several models to fit the experimental I-V data.
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