Influence of Mg doping on structural, dielectric properties and Urbach energy in ZnO ceramics

被引：7
|
作者：
Das, Tanushree [1 ]
Das, Dipteerekha [1 ]
Parashar, Kajal [2 ]
Parashar, S. K. S. [2 ]
Anupama, A. V. [1 ]
Sahoo, Balaram [3 ]
Das, Bikram Keshari [1 ]
机构：
[1] Kalinga Inst Social Sci, Sch IKST, Nano Innovat Lab, Bhubaneswar 751024, Orissa, India
[2] KIIT Univ, Sch Appl Sci, Nano Sensor Lab, Bhubaneswar 751024, Orissa, India
[3] Indian Inst Sci, Mat Res Ctr, Bangalore 560012, India
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2023年 / 34卷 / 31期
关键词：
PHOTOLUMINESCENCE; NANOSTRUCTURES; LUMINESCENCE;
D O I：
10.1007/s10854-023-11497-1
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：
This study investigated the impact of magnesium doping on structural, optical, and dielectric properties of zinc oxide. Magnesium-doped ZnO (Zn1-xMgxO) samples were synthesized and characterized with varying doping levels (x = 0, 0.01, 0.02, 0.03) using solid state reaction, employing techniques including X-ray Diffraction(XRD), Field Emission Scanning Electron Microscopy (FESEM), Impedance Spectroscopy and Diffuse Reflectance Spectroscopy (DRS). The synthesized samples show single-phase hexagonal wurtzite structure, indicating successful doping of magnesium in ZnO lattice. FESEM micrograph revealed voids in doped samples. Doping reduces the dielectric constant of ZnO and shows dielectric loss > 200 degrees C in doped sample. Magnesium doping decreased ZnO's band gap, altering its electronic properties and optical behavior. Urbach energy increased with doping and inversely linked to dielectric constant.
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页数：11
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