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首页> 外文期刊>Materials Science and Engineering. B, Solid-State Materials for Advanced Technology >Preparation and photoluminescence of SrNb_2O_6 nanoparticles prepared by combustion method
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Preparation and photoluminescence of SrNb_2O_6 nanoparticles prepared by combustion method

机译：燃烧法制备SrNb_2O_6纳米粒子的制备及光致发光

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摘要

Pure and Mn-doped SrNb_2O_6 nanoparticles have been prepared by sol-gel combustion method using citric acid as fuel and complexing agent and nitrates as oxidants at a relatively low temperature compared to solid-state reaction method. X-ray diffraction (XRD) patterns of the pure SrNb_2O_6 samples show that the SrNb_2O_6 nanoparticles exhibited orthorhombic phase. Photoluminescence (PL) properties of all the undoped and Mn-doped samples were studied in detail. For the pure SrNb_2O_6 samples, a strong blue emission band centered at 442 nm and two weak emission bands centered at 524 nm and 626 nm, respectively, can be observed. For the Mn-doped SrNb_2O_6 samples, no emission from Mn~(2+) was observed while the blue emission intensity of SrNb_2O_6 varied with the Mn-doping concentration. This novel PL characteristic of the doped samples was explained.
机译：与固相反应法相比，采用柠檬酸作为燃料和络合剂，硝酸盐作为氧化剂，通过溶胶-凝胶燃烧法制备了纯锰掺杂的SrNb_2O_6纳米粒子。纯SrNb_2O_6样品的X射线衍射（XRD）图谱显示SrNb_2O_6纳米颗粒表现出正交相。详细研究了所有未掺杂和Mn掺杂样品的光致发光（PL）特性。对于纯SrNb_2O_6样品，可以观察到以442 nm为中心的强蓝色发射带和以524 nm和626 nm为中心的两个弱发射带。对于Mn掺杂的SrNb_2O_6样品，未观察到Mn〜（2+）的发射，而SrNb_2O_6的蓝光发射强度随Mn掺杂浓度的变化而变化。解释了掺杂样品的这种新颖的PL特性。

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