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Schematic of the nanoparticles embedded in the PMMA layer//ITO devices.
TEM image of ZnO nanoparticles in the PMMA layer.
Current-voltage characteristics for the nanoparticles embedded in the PMMA layer//ITO and the nanoparticles embedded in the PMMA layer/ITO devices. Filled rectangles and empty circles represent the OBDs with and without layers, respectively.
Schematic of the energy band diagram corresponding to the carrier transport mechanisms of the hole and electron injection processes during the forward voltage for the nanoparticles embedded in the PMMA layer//ITO devices. The LUMO and the HOMO represent the energy levels of the highest occupied molecular orbital and the lowest unoccupied molecular orbital of the PMMA, respectively. The and represent the conduction band edge and the valence band edge of the molecules and ZnO nanoparticles, respectively.
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