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首页> 外文期刊>Combustion Science and Technology >PHOTOLUMINESCENCE PROPERTIES OF COMBUSTION SYNTHESIZED BaB_2O_4:Pb~(2+) PHOSPHOR
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PHOTOLUMINESCENCE PROPERTIES OF COMBUSTION SYNTHESIZED BaB_2O_4:Pb~(2+) PHOSPHOR

机译：燃烧合成BaB_2O_4：Pb〜（2+）磷的光致发光性质

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摘要

Inorganic borate host phosphor BaB_2O_4 doped with varying concentrations of Pb~(2+) has been prepared by a solution combustion synthesis technique. The synthesis is based on the exothermic reaction between the fuel (urea) and oxidizer (ammonium nitrate). The photoluminescence properties of prepared materials were studied at room temperature. Under the excitation of 240 nm, the phosphor BaB_2O_4:Pb~(2+) shows broad emission at 370 nm (corresponds to ~3P_1 to ~1S_0 transition). The optimum concentration of Pb~(2+) in BaB_2O_4:Pn~(2+) was found to be 0.02 mol (relative to Ba). The critical transfer distances, R_0 were calculated. Stokes shifts were calculated (using corresponding excitation and emission band peaks) to be 14,640 cm~(-1). The emission bands of synthesized phosphors are in the ultraviolet (UV) region and could be potential candidates for application in UV lamps.
机译：通过固溶燃烧合成技术制备了掺杂不同浓度的Pb〜（2+）的无机硼酸盐主体荧光粉BaB_2O_4。合成基于燃料（尿素）和氧化剂（硝酸铵）之间的放热反应。在室温下研究了制备材料的光致发光性能。在240 nm的激发下，荧光粉BaB_2O_4：Pb〜（2+）在370 nm处显示宽发射（对应于〜3P_1至〜1S_0跃迁）。发现BaB_2O_4：Pn〜（2+）中Pb〜（2+）的最佳浓度为0.02 mol（相对于Ba）。计算出临界转移距离R_0。计算出斯托克斯位移（使用相应的激发和发射带峰）为14,640 cm〜（-1）。合成的磷光体的发射带在紫外（UV）区域，可能是在UV灯中应用的潜在候选者。

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