A Comparative Investigation on the Structural,Optical and Electrical Properties of SiO_2-Fe_3O_4 Core-Shell Nanostructures with Their Single Components

查看全文 作　　者：Neena [1]Bachan;[2]A.Asha;W.Jothi [1]Jeyarani;D.Arun [3]Kumar;J.Merline [1]Shyla

机构地区：[1]Department of Physics,Energy NanoTechnology Centre(ENTeC),Loyola Institute of Frontier Energy(LIFE),Loyola College;[2]Department of Physics,Dhanalakshmi Srinivasan College of Engineering and Technology;[3]Department of Physics,Shri Andal Alagar College of Engineering

出　　处：《Acta Metallurgica Sinica(English Letters)》索引2015年第28卷第11期,共9页

摘　　要：The SiO_2-Fe_3O_4 core-shell nanostructures were synthesized by sol-gel chemistry.The morphological features of the nanostructures were examined by field emission scanning electron microscopy which revealed the core-shell nature of the nanoparticles.X-ray diffraction studies evidenced the formation of SiO_2-Fe_3O_4 core-shell nanostructures with high degree of homogeneity.The elemental composition of the SiO_2-Fe_3O_4 core-shell nanostructures was determined by energy-dispersive X-ray spectroscopy analysis.Fourier transform infrared spectroscopy showed the Si-O-Fe stretching vibrations.On analysis of the optical properties with UV-Vis spectra and Tauc's plot,it was found that the band gap of SiO_2-Fe_3O_4 core-shell nanostructures diminished to 1.5 eV.Investigation of the electrical properties of the core-shell nanostructures using field-dependent conductivity measurements presented a significant increase in photoconductivity as compared to those of its single components,thereby rendering them as promising candidates for application as photoelectrodes in dye-sensitized solar cells. 关键词：核壳结构纳米结构电学性质光学特性成分电子显微镜观察傅里叶变换红外光谱染料敏化太阳能电池

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A Comparative Investigation on the Structural,Optical and Electrical Properties of SiO_2-Fe_3O_4 Core-Shell Nanostructures with Their Single Components

参考文献(55)

引证文献(4)

耦合文献(7)

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