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首页> 外文期刊>Sensor Letters: A Journal Dedicated to all Aspects of Sensors in Science, Engineering, and Medicine >Effect of Flux Boric Acid (H_3BO_3) on Yttrium Silicate Y_2SiO_5: Dy~(3+) (9 mol%) Nanophosphors Its Characterization and Luminescence Studies
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Effect of Flux Boric Acid (H_3BO_3) on Yttrium Silicate Y_2SiO_5: Dy~(3+) (9 mol%) Nanophosphors Its Characterization and Luminescence Studies

机译：助焊剂（H_3bO_3）对钇硅酸盐Y_2SIO_5：DY〜（3+）（9mol％）纳米膦酰磷的影响其特征和发光研究

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Flux Boric acid (H_3BO_3) doped on Y_2SiO_5:Dy~(3+) phosphors were synthesized by auto ignition based low temperature Solution Combustion Synthesis (SCS) using Oxalic acid dihydrate (ODH) as fuel. Powder X-ray diffraction (PXRD) patterns confirm the nano sized particles corresponding to JCPDS card 36-1476. The crystallite size of the samples estimated from Scherer's formula and Williamson-Hall (W-H) plots was found to be in the range ～21 nm and 26 nm respectively. Scanning electron Microscope (SEM) micrographs infer addition of flux gives the enhanced grain growth and it attains smooth surface improves the crystallinity and particle morphology of the sample. Fourier transform Infrared (FTIR) data reveals the presence of M-O bonds and Y-O bonds and also the bands at 642 cm~(-1), 655 cm~(-1), 668 cm~(-1), 697 cm~(-1), 719 cm~(-1) are ascribed due to the B-O-B linkage in the borate network. Addition of flux on Thermoluminescence (TL) glow curves from 0.5 KGy-4 KGy acts as a sensitizer and the peak appearing at 185°C is quite stable and can be named as "dosimetric peak" to use in TL phosphor. The kinetic parameters estimated by Chen's peak shape method was found to be second order with activation energy 0.82.
机译：掺杂在Y_2SIO_5：DY〜（3+）磷光体上的助熔剂硼酸（H_3BO_3）由基于自动点火的低温溶液燃烧合成（SCS）作为燃料而合成了X2SIO_5：DY〜（3+）磷光体。粉末X射线衍射（PXRD）图案确认对应于JCPDS卡36-1476的纳米尺寸粒子。发现从Scher's公式和Williamson-Hall（W-H）地块估计的样品的微晶尺寸分别在〜21nm和26nm的范围内。扫描电子显微镜（SEM）显微照片再次添加通量给出增强的晶粒生长，并且它达到平滑的表面改善样品的结晶度和颗粒形态。傅里叶变换红外（FTIR）数据显示了Mo键和yo键的存在，以及642cm〜（-1），655cm〜（-1），668cm〜（-1），697cm〜（ - 1），由于硼酸网络中的鲍勃连接，719cm〜（-1）归因于硼酸盐网络中。从0.5kGy-4 kgy作为敏化剂的热致发光（TL）发光曲线的助焊剂的添加，并且出现在185°C时的峰值是非常稳定的，并且可以命名为在TL磷光体中使用的“剂量峰值”。发现由Chen的峰值形状方法估计的动力学参数是具有0.82的激活能量的秒顺序。

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