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Evolution of Zn based high purity phases under NH3 gas atmosphere and their PL properties |
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| Authors: | Waheed S KhanChuanbao Cao Faheem K ButtZulfiqar Ali M SafdarLiqing Pan M Yasir RafiqueQurrat ul Ain Zahid UsmanGhulam Nabi |
| Institution: | a Research Center of Materials Science, Beijing Institute of Technology, Beijing 100081, PR China b National Laboratory of Flame Retardant Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, PR China c Department of Physics, School of Applied Science, University of Science and Technology Beijing, Beijing 100083, PR China |
| Abstract: | We report here the evolution of zinc based high purity phases with novel morphologies such as Zn3N2 hollow structures, ZnO nanowires and nanopowders, as well as metallic Zn layered hexagonal microparticles at progressively increased reaction temperature of 600 °C, 700 °C, 800 °C under NH3 gas atmosphere using Zn powder precursor and keeping all other experimental parameters unchanged. Growth mechanism for Zn3N2 obtained by nitridation, ZnO by oxidation and Zn microparticles via thermal evaporation & condensation process are discussed briefly. The as-synthesized products were characterized by X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS) and scanning electron microscopy (SEM). Photoluminescence (PL) studies have revealed very interesting and infrequently observed emission bands at 378 and 661 nm for Zn3N2, 359 and 396 nm for ZnO as well as 389 nm for Zn polyhedral microparticles. |
| Keywords: | Zinc nitride Zinc oxide Zinc metal Nanostructures Growth mechanism PL properties |
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