Pal U, Meléndrez R, Chernov V, Barboza-Flores M
Instituto Física, Universidad Autónoma de Puebla, Apartado Postal J-48, Puebla 72570, México.
J Nanosci Nanotechnol. 2008 Dec;8(12):6513-8.
ZnO nanophosphors prepared by a glycol mediated chemical synthesis exhibit afterglow (AG) and thermoluminescence (TL) after excitation with beta rays. These properties, which are of great interest in dose assessment of ionizing radiation fields, could be appreciably modified by Yb doping. Concentration of 1, 2 and 5% diminished the AG and TL efficiency and modified the TL glow curve shape significantly. However, the 5% Yb doping concentration reduced the AG and TL fading behavior, improving the use of ZnO:Yb (5%) as potential TL ionizing radiation dosimeter.
通过乙二醇介导的化学合成法制备的ZnO纳米磷光体在受到β射线激发后会表现出余辉（AG）和热释光（TL）现象。这些特性在电离辐射场剂量评估中具有重要意义，通过镱（Yb）掺杂可以对其进行显著改性。1%、2%和5%的掺杂浓度会降低AG和TL效率，并显著改变TL发光曲线的形状。然而，5%的Yb掺杂浓度降低了AG和TL的衰减行为，提高了ZnO:Yb（5%）作为潜在TL电离辐射剂量计的适用性。
