SYNTHESIS AND PHOTOLUMINESCENCE PROPERTIES OF MICRON-ALUMINA

Shihua Zhao (), Zheng Wang, Mingquan Wang, Yuting Cui and Quanlin Liu
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Shihua Zhao: School of Physics and Electrical Information, Shangqiu Normal University, Shangqiu, Henan province 476000, P. R. China;
Zheng Wang: School of Physics and Electrical Information, Shangqiu Normal University, Shangqiu, Henan province 476000, P. R. China
Mingquan Wang: School of Physics and Electrical Information, Shangqiu Normal University, Shangqiu, Henan province 476000, P. R. China
Yuting Cui: School of Physics and Electrical Information, Shangqiu Normal University, Shangqiu, Henan province 476000, P. R. China
Quanlin Liu: School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China

Surface Review and Letters (SRL), 2014, vol. 21, issue 02, 1-4

Abstract: Micron-alumina is expected to be of new properties and applications owing to its different morphology structures, which is prepared by the conventional preparation methods. X-ray diffraction (XRD) patterns present that the micron-alumina has poly-crystalline structure. Scanning electron microscopy (SEM) shows that the micron-alumina looks like a bouquet of flowers and its surface is covered with much micron-strips. Transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM) show that the micron-alumina is composed of many particles, which has polycrystalline structure. PL spectra display that emission peak of the micron-alumina centers at 301 nm, which attributes to theF+centers. A schematic drawing for electronic transitions in the excitation and emission processes is proposed.

Keywords: Photoluminescence (PL); excitation spectrum; emission spectrum; electronic transition (search for similar items in EconPapers)
Date: 2014
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DOI: 10.1142/S0218625X14500310

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