منابع مشابه
Growth Model of MOCVD Polycrystalline ZnO
A growth model for the low pressure chemical vapor deposition (LPCVD) of polycrystalline ZnO thin films is proposed. This model is based on experimental observations of the surfacemorphology and crystallographic orientations of the layers at different thicknesses and growth temperatures. It is shown that the films preferred orientation evolves from c-axis to aaxis as the growth temperature is i...
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The group-III elements, such as Al, Ga and In, are possible dopants for ZnO to improve the electric conductivity of ZnO thin film. Since Ga has lower cost than In and has higher oxidation resistance than Al, it becomes the preferred dopants for ZnO thin film for transparent conducting oxide (TCO) application. In the research, we used MOCVD method with Ga doping to prepare the Ga-doped ZnO thin ...
متن کاملDielectric relaxation of shallow donor in polycrystalline Mn-doped ZnO
The dielectric properties of Mn-doped ZnO ceramics with electrically active grain boundaries at low temperatures of 10–70 K were investigated by admittance spectroscopy. It was observed that the dielectric relaxation of the main shallow donors, zinc interstitial, in these samples occurred in the temperature range of 20–50 K. Based on theoretical analysis, an expression for the admittance of an ...
متن کاملTransformation of ZnO polycrystalline sheets into hexagon-like mesocrystalline ZnO rods (tubes) under ultrasonic vibration
The mesoscale assembly process is sensitive to additives that can modify the interactions of the crystal nucleus and the developing crystals with solid surfaces and soluble molecules. However, the presence of additives is not a prerequisite for the mesoscale transformation process. In this study, ZnO sheet networks were synthesized on Al foils by a hydrothermal process. Scanning electron micros...
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Zinc oxide (ZnO) and indium-doped zinc oxide (IZO) thin films have been deposited onto glass substrates by the spray pyrolysis method. The variations of the structural, electrical and optical properties with the indium incorporation were investigated. The crystal structure and orientation of the ZnO and IZO thin films were investigated by XRD patterns. All the deposited films are polycrystallin...
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ژورنال
عنوان ژورنال: Crystal Growth & Design
سال: 2009
ISSN: 1528-7483,1528-7505
DOI: 10.1021/cg900732h