کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8208012 | 1531899 | 2018 | 21 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of Cu and Ag doping on structure and optical properties of In2O3 thin film prepared by spray pyrolysis
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
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چکیده انگلیسی
Thin films of In2O3 and In2O3 doped with Ag+ or Cu2+ were assembled by spray pyrolysis from aqueous solution at 450â¯Â°C. The microstructure analysis and optical properties were investigated using XRD, SEM, EDX and UV-Vis. spectrophotometer. XRD analysis proved that Ag-doping greatly reduces the crystallites sizes of In2O3 from 96â¯nm to 59â¯nm. However, Cu-doping has less pronounced effect on the crystallite sizes than that of Ag doping. The band gap energy of In2O3 decreases with both Cu2+ and Ag+ doping. The change in lattice parameter of cubic In2O3 with Cu and Ag substitutions is compatible with the ionic radius of the substituted ions, i.e. Ag-substitution increases the lattice parameter and Cu-substitution decreases the lattice parameter. The calculated direct band gap of bare In2O3 film is 3.59â¯eV. Doping In2O3 with Cu2+ and Ag+ decreases the band gap to 3.36â¯eV and 3.27â¯eV, respectively. Ag+ substitution in place of In3+ ion in In2O3 cubic lattice causes negative strain value due to the shrinkage of the interplaner spacing of the unit cell. In contrary, replacing In3+ cation with Cu2+ cation expands interplaner distances of the crystallographic planes of In2O3 lattice and causes positive strain value. The present work demonstrates the capability to assemble high quality doped - In2O3 thin films by simple solution based spray pyrolysis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Results in Physics - Volume 10, September 2018, Pages 126-131
Journal: Results in Physics - Volume 10, September 2018, Pages 126-131
نویسندگان
Nasser Y. Mostafa, Ali Badawi, Sameh I. Ahmed,