Characterization of structure and photoluminescence properties for LiZn(B1-xAlx)O3 (x=0-1) oxides

IF 5.8 2区 材料科学 Q2 CHEMISTRY, PHYSICAL
Sean Wu, Lay-Gaik Teoh, Jia- Jin Chen, Yee-Shin Chang
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引用次数: 0

Abstract

LiZn(B1-xAlx)O3 (x=0-1) oxide was prepared by calcining at 750 ℃ for 5 h 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 367 nm, 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).

Abstract Image

LiZn(B1-xAlx)O3 (x=0-1)氧化物的结构及光致发光性能表征
采用固相反应法,在750℃下煅烧5 h,制备了LiZn(B1-xAlx)O3 (x=0-1)氧化物。由于B3+和Al3+离子的离子半径不同,晶格发生畸变,在x=1时形成ZnO和γ-LiAlO2氧化物组成的双相。随着Al3+离子掺杂量的增加,双相氧化物粉末颗粒由不规则的块状结构转变为片状结构。在367nm激发波长下,观察到蓝色和黄绿色两个较宽的发光带。对于LiZnBO3, CIE色度坐标位于浅蓝色区域,而对于双相氧化物,CIE色度坐标位于白光区域(x=0.33, y=0.34),并且非常接近NTSC标准白光坐标(x=0.33, y=0.33)。
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来源期刊
Journal of Alloys and Compounds
Journal of Alloys and Compounds 工程技术-材料科学:综合
CiteScore
11.10
自引率
14.50%
发文量
5146
审稿时长
67 days
期刊介绍: The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.
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