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Preparation of ZnO Nanocrystals and Their Applications in Varistors

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The varistor effect of ZnO nanocrystals has attraction much attention due to its applications in life science, nanotechnology, and energy. In this work we prepared ZnO nanocrystals by coprecipitation and decomposition zinc salt methods, did comparison study of the structure, and size structure of the nanocrystals. The nanocrystal growth was studied by different experimental parameters such as temperature and Zn concentration compared to the decomposition of Zn salt producing ZnO nanocrystals. The varistors based on the ZnO nanocrystals prepared by the two methods were also investigated and compared. The nonlinear coefficients (α) of the devices based on nanocrystals prepared by coprecipitation method vary with the nanocrystal preparation conditions. However, relative stable α are observed as the ZnO nanocrystals are synthesized by decomposition of Zn salt at high temperatures.
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Keywords: COPRECIPITATION; NANOCRYSTALS; SYNTHESIS; VARISTORS; ZNO

Document Type: Short Communication

Publication date: March 1, 2017

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  • Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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