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首页> 外文期刊>Nanotechnology >Preparation of Eu3+ ions activated Ca2La8(SiO4)(6)O-2 oxyapatite nanophosphors through two-step surfactant-free method and their optical and electrical properties
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Preparation of Eu3+ ions activated Ca2La8(SiO4)(6)O-2 oxyapatite nanophosphors through two-step surfactant-free method and their optical and electrical properties

机译：通过两步表面活性剂的方法及其光学和电性能制备Eu3 +离子的制备活化Ca2La8（SiO 4）（6）o-2氧铝磷酸盐纳米孔

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摘要

Eu3+ ions activated Ca2La8(SiO4)(6)O-2 ( CLSO): Eu3+ nanophosphor samples were synthesized by a mixed solvothermal and hydrothermal method. The samples were carefully studied using various characterization techniques. The XRD patterns of CLSO: Eu3+ and CLSO confirmed that the samples were crystallized in hexagonal phase with a space group of P63/m (176). The morphology of the nanoparticles was studied by varying the reaction parameters such as growth, temperature and time. The photoluminescence (PL) excitation and PL emission spectra exhibited the typical Eu3+ bands in the wavelength range of 200-550 nm and 400-750 nm, respectively. The intensity of the D-5(0) -> F-7(2) electric dipole (ED) transition peak was strong in the PL emission spectrum which imparts the red color when observed under ultraviolet light. The ED transition peak intensity increased when the sample was calcined at an elevated temperature of 700 degrees C, indicating improved asymmetry ratio and good chromaticity coordinates. The electrical properties of the prepared materials were studied by spin-coating the powder dispersed solutions on the silica substrate. The output current values were also measured for the CLSO nanoparticles prepared under different growth conditions. These results showed the advantages of CLSO nanoparticles for their application in optics and feasibility in nanoelectronic and energy harvesting devices.
机译：EU3 +离子活化Ca2La8（SiO 4）（6）O-2（CLSO）：通过混合溶剂热和水热法合成Eu3 +纳米磷样品。使用各种表征技术仔细研究样品。 CLSO的XRD模式：EU3 +和CLSO证实，样品在六边形相中结晶，具有P63 / m（176）的空间组。通过改变反应参数如生长，温度和时间来研究纳米颗粒的形态。光致发光（PL）激励和PL发射光谱分别在波长范围为200-550nm和400-750nm的典型EU3 +条带。在PL发射光谱中，D-5（0） - > F-7（2）电偶极（ED）转变峰的强度在PL发射光谱中强烈，在紫外线下观察时赋予红色。当样品在700℃的高温下煅烧样品时，ED过渡峰强度增加，表明改善的不对称比和良好的色度坐标。通过在二氧化硅基材上旋涂粉末分散的溶液来研究制备的材料的电性能。还针对在不同生长条件下制备的CLSO纳米颗粒测量输出电流值。这些结果表明CLSO纳米粒子在光学和可行性中应用纳米电子和能量收集装置的优点。

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