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Synthesis and Physical Properties of Mn Doped ZnO Dilute Magnetic Semiconductor Nanostructures
Authors:Javed Iqbal  Xiaofang Liu  Abdul Majid  Ronghai Yu
Affiliation:1. Laboratory of Nanoscience and Technology, Department of Physics, International Islamic University, Islamabad, 45320, Pakistan
2. Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
3. School of Materials Science and Engineering, Beihang University, Beijing, 100191, China
4. Department of Physics, University of Gujrat, Gujrat, 50700, Pakistan
Abstract:Mn doped ZnO nanostructures have been prepared using low temperature simple, quick, and versatile synthesis approach. The structural, microstructural, and vibrational investigations reveal that as prepared nanostructures with low Mn doping concentration have single hexagonal phase and are grown along the preferred c-axis. The X-rays photoelectron spectroscopy demonstrates that the Mn ions are in mixed oxidation states for high doping concentration of Mn, while are in 2+ oxidation state for low concentration into ZnO lattice. The photoluminescence spectrum (PL) exhibits a significant red-shift of 22 nm in the optical band gap of doped ZnO and shows the improved luminescence properties, which makes it potential for its use in the photocatalyst, optoelectronics and solar cell nanodevices. Furthermore, the magnetic measurement of Mn doped ZnO nanostructures exhibits the ferromagnetism at room temperature.
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