Exploring the optical and electrical characteristics of CuO/CuCo2O4 composites

IF 1.4 4区材料科学 Q3 MATERIALS SCIENCE, CERAMICS

Science of Sintering Pub Date : 2022-01-01 DOI:10.2298/sos2203265d

N. Deraz, H. Saleh, A. Abdel-karim

引用次数: 1

Abstract

Series of CuO/CuCo2O4 composites were prepared by using the combustion method followed by heating at 750oC with different molar ratios of Cu/Co. Characterization of different composites is systematically investigated with various analytical techniques. X-ray diffraction patterns and Fourier-transform infrared spectroscopy indicate the growth of well crystalline CuCo2O4 nanoparticles with a cubic spinel structure. Images of transmission electron microscope and scanning electron microscope show a uniform particle distribution. From UV-visible spectra, the calculated optical band gaps of various solids were ranged between 1.2 and 1.8 eV. Electrical properties were measured at temperature ranged from 303 to 463 K in a frequency range from 102 to 106 Hz. The AC conductivity satisfied the Jonscher equation, especially at high frequency. The obtained data of conductivity and dielectric constant indicated that the prepared samples behave as semiconductor materials. Finally, it can be concluded that the CuO/CuCo2O4 composite showed attractive multi-functional features for electrical applications.

查看原文本刊更多论文

CuO/CuCo2O4复合材料的光学和电学特性研究

采用不同Cu/Co摩尔比的燃烧加热法制备了CuO/CuCo2O4复合材料。用各种分析技术系统地研究了不同复合材料的表征。x射线衍射图和傅里叶变换红外光谱分析表明，CuCo2O4纳米颗粒生长出立方尖晶石结构。透射电镜和扫描电镜显示颗粒分布均匀。从紫外可见光谱中，计算出各种固体的光学带隙在1.2 ~ 1.8 eV之间。电性能测量温度范围为303至463 K，频率范围为102至106 Hz。交流电导率满足Jonscher方程，特别是在高频时。电导率和介电常数数据表明，制备的样品具有半导体材料的特性。最后得出CuO/CuCo2O4复合材料在电气应用方面具有良好的多功能特性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Science of Sintering 工程技术-材料科学：硅酸盐

CiteScore

2.50

自引率

46.70%

发文量

审稿时长

3.3 months

期刊介绍： Science of Sintering is a unique journal in the field of science and technology of sintering. Science of Sintering publishes papers on all aspects of theoretical and experimental studies, which can contribute to the better understanding of the behavior of powders and similar materials during consolidation processes. Emphasis is laid on those aspects of the science of materials that are concerned with the thermodynamics, kinetics and mechanism of sintering and related processes. In accordance with the significance of disperse materials for the sintering technology, papers dealing with the question of ultradisperse powders, tribochemical activation and catalysis are also published. Science of Sintering journal is published four times a year. Types of contribution: Original research papers, Review articles, Letters to Editor, Book reviews.