Abstract
LiZn(B1-xAlx)O3 (x=0-1) oxide was prepared by calcining at 750 ℃ for 5h using a solid-state reaction method. Due to the difference in the ionic radii of B3+ and Al3+ ions, the lattice is distorted, and a bi-phase composed of ZnO and γ-LiAlO2 oxides are formed for x=1. As the Al3+ ion doping contents increasing, the bi-phase oxide powder particles transform from agglomerated irregular to flaky structure. Under an excitation wavelength of 367nm, two broad luminescence bands located at blue and yellow-green light regions are observed. The CIE chromaticity coordinates are located in the light blue light region for LiZnBO3, whereas the CIE coordinates are located in the white light region (x=0.33, y=0.34) for the bi-phase oxides, and it is quite close to the NTSC standard white light coordinates (x=0.33, y=0.33).
Published Version
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