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Optical properties of ZnO nanoparticles on p-type Si and Al2O3 substrates by utilizing a spin-coating method were investigated. While the PL spectra of ZnO nanoparticles on p-type Si substrates shows only strong exciton related to near band emission peak without a green-emission peak, those of ZnO nanoparticle on Al2O3 substrate shows broad green-emission spectra by defect. These results can help...
Organic memory devices with a hybrid active layer consisting of the poly-4-vinyl-phenol (PVP) and C60 were formed by using the spin-coating technique. The C-V curves for Al/hybrid PVP and C60 composites on p-type Si(100)/Al structure at room temperature showed a metal-insulator-semiconductor (MIS) behavior with a large flat-band voltage shift due to the existence of the C60 molecules. The magnitude...
Dependence of the charging effects on the tunneling oxide thickness in Si nanoparticles embedded in a SiO2 layer was investigated by using electrostatic force microscopy (EFM) measurements. EFM images showed that the stored charge in the Si nanoparticles increased with an increase in the applied bias voltage of the EFM tip. The variation of tunnel oxide thickness affected the tunneling threshold voltages,...
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