سنتز هیدروترمال و شناسایی لایه های ZnO با نانوساختارهای مختلف

Hydrothermal synthesis and characterization of

ZnO films with different nanostructures

سنتز هیدروترمال و شناسایی لایه های ZnO با نانوساختارهای مختلف

ABSTRACT

ZnO nanomaterials were grown on the F-doped SnO2 glass substrate by a two-step hydrothermal method [14]. Firstly, ZnO buffer layer was modified on FTO substrates by spin-coating. Secondly, hydrothermal method was employed to synthesize ZnO materials. ZnO buffer layer was obtained by the following procedure. Zinc acetate was dissolved in the mixed solution of ethanolamine and 2- methoxyethanol with a concentration of 0.75 M. The mixture was then agitated at 60 ◦C for 30 min to yield a homogeneous and stable colloid solution. The procedure was the same as Ref. [27]. After coated with the above colloid solution by spin-coating, FTO substrates were annealed at 300 ◦C to get ZnO buffer layer.

 

سنتز نانو میله های ZnO با اندازه ی بزرگ با روش تبخیر حرارتی ساده

Synthesis of large size ZnO microrods by a simple way of

thermal evaporation

سنتز نانو میله های ZnO با اندازه ی بزرگ با روش تبخیر حرارتی ساده

ABSTRACT

Large sizeneedle-like ZnO microrods with diameters around 100 μm and length of up to2.5 mm have been achieved by asimple method of thermal evaporation of ZnO powder discs in the open air. Metallic catalysts and vacuum condition are not necessary. Both the micro-sized and nano-sized ZnO rods were grown vertically at different sites of the substrate. Theas-synthe sized micro rod sand nanorods are pure ZnO without any other element, and both of them consist of single crystalline cores with hexagonal cross sections.