Synthesis and XRD/PL studies of pure and Sb2O3 doped ZnO nanophases

被引：0
作者：
Boulares, N. [1 ]
Guergouri, K. [1 ]
Tabet, N. [2 ]
Monty, C. [3 ]
机构：
[1] Mentouri Univ, Constantine, Algeria
[2] King Fahd Univ Petroleum & Minerals, Dhahran, Saudi Arabia
[3] CNRS, Promes, F-66120 Odeillo Font Romeu, France
来源：
NANOTECHNOLOGY AND ITS APPLICATIONS | 2007年 / 929卷
关键词：
ZnO nanopowders; XRD; XPS; photoluminescence;
D O I：
暂无
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Pure and Sb2O3 (0 to 5% molar fraction) doped ZnO nanophases were synthesized using a sublimation-condensation method in a solar furnace. The initial and final powders were characterized by X-ray diffraction (XRD) and photoluminescence (PL) techniques. XRD results showed no significant change in the lattice parameters and the presence of a new phase Zn7O2Sb12 in the highly doped micropowders but not in the nanopowders. The photoluminescence spectra showed a strong donor-acceptor pair (DAP) emission in the pure untreated ZnO micropowder which is drastically reduced in pure and doped nanopowders. The donor-bound excitonic band (DX) includes three well resolved peaks in the PL spectra of the doped micropowders while the spectra of doped nanopowders showed a broader band. Furthermore, the free exciton emission was absent in all doped samples.
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页码：172 / +
页数：2
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