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Well-aligned ZnO nanorods were grown on the p-GaN substrate by a hydrothermal method and n-ZnO nanorods/p-GaN heterojunction LED structures were formed. The electroluminescence (EL) properties of this structure were studied under both forward and reverse bias. The nanorod LED device only has light output under reverse bias. The I-V characteristic results show that the nanosized junction can increase...
By combining nanoimprint lithography and traditional hydrothermal growth method of ZnO nanorods, vertical and well patterned ZnO nanostructures were successfully fabricated. The imprinted SU-8 resist deep trenches above the ZnO seed layer prohibit the lateral growth of ZnO nanorods. Various patterned vertical ZnO nanostructures like nanorods and nanowalls can be obtained. The improvement of photoluminescence...
The effect of the ZnO homo-buffer layer on the structural, optical and electrical properties of the Sol-gel ZnO films was systematically investigated. The XRD and SEM results show that the homo-buffer layer can improve the degree of the preferential c-axis orientation (the best Lotering orientation factor (F) can reach 0.915), the grain size and the surface morphology of thereon ZnO films. A narrower...
The effects of the deposition condition of DC sputtering on the properties of ZnO thin films were systematic investigated. ZnO films have been prepared by DC sputtering on the Si and glass substrates in the Ar and O2/Ar ambient with different substrate temperature ranging from room temperature to 300??C. Optimal results of the ZnO film were obtained with a deposition temperature of 300??C in the O...
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