Structural, optical and electrical properties of Zn-doped SnO2 nanoparticles synthesized by the co-precipitation technique

被引:49
作者
Bargougui, R. [1 ,2 ]
Oueslati, A. [3 ]
Schmerber, G. [4 ]
Ulhaq-Bouillet, C. [4 ]
Colis, S. [4 ]
Hlel, F. [3 ]
Ammar, S. [1 ,2 ]
Dinia, A. [4 ]
机构
[1] Ecole Natl Ingn Sfax, Sfax, Tunisia
[2] Univ Gabes, Cite Erriadh, Fac Sci Gabes, Gabes 6072, Tunisia
[3] Fac Sci Sfax, Lab Etat Solide, Sfax, Tunisia
[4] CNRS UDS ECPM, IPCMS, UMR 7504, F-67034 Strasbourg 2, France
关键词
TIN OXIDE; THIN-FILMS; MAGNETIC-PROPERTIES; CO; SPECTROSCOPY; TEMPERATURE; IMPEDANCE; CATALYSTS; SENSORS; SYSTEM;
D O I
10.1007/s10854-014-1841-2
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Nanometric size Zn-doped SnO2 particles with Zn concentration varying from 1 to 6 % were prepared using the co-precipitation method. X-ray diffraction patterns show for all samples a typical rutile-type tetragonal structure of SnO2 without any additional peaks from spurious phases. These results together with transmission electron microscopy analyses have shown that the size of the nanoparticles decreases with Zn doping down to 4 nm. According to UV-visible absorption measurements this decrease of particle size is accompanied by a decrease of the band gap value from 3.34 eV for SnO2 down to 3.28 eV for 6 % Zn doping. The electrical conductivity of the system has been investigated between 473 and 718 K, in the 200 Hz-5 MHz frequency range, by means of impedance spectroscopy. The temperature dependence of the bulk conductivity was found to obey the Arrhenius law with activation energies of 0.74 eV for SnO2 and 0.69 eV for 6 % Zn doping.
引用
收藏
页码:2066 / 2071
页数:6
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