Microstructural Aspects of the CePO4:Tb3+ Phosphor for Luminescence Sensing
Microstructural Aspects of the CePO4:Tb3+ Phosphor for Luminescence Sensing
复制标题
用于发光传感的 CePO4:Tb3 荧光粉的微观结构
DOI：
10.1111/ijac.12173
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发表时间：
2015
影响因子：
2.1
通讯作者：
Mami Kitsuda
中科院分区：
文献类型：
--
作者：
Shinobu Fujihara;Yuina Takano;Mami Kitsuda
采用液相法合成了三价铽离子掺杂的磷酸铈（CePO 4：Tb 3+）陶瓷粉体和薄膜，并对其微结构进行了调制，研究了其结构与氧化还原发光开关性能之间的关系。采用KMnO 4水溶液和L（+）-抗坏血酸水溶液研究了CePO 4：Tb 3+的氧化还原响应，分别表现为发光猝灭和发光恢复。粉末样品的颗粒形状和尺寸取决于热处理条件，这也对开关性能有很大影响。制备的纳米棒颗粒比热处理的较大球形颗粒对氧化还原反应更敏感，表明开关由颗粒的表面状态控制。薄膜样品的厚度也是确定对氧化还原反应的响应的重要因素。在任何情况下，我们的研究结果表明，重要的是要控制CePO 4：Tb 3+材料的微观结构，用于发光开关器件的氧化还原监测。
Ceramic powders and thin films of cerium phosphate doped with trivalent terbium ions (CePO4:Tb3+) were synthesized from liquid phases, and their microstructures were modulated to investigate the relationship between the structure and the luminescence switching property responsive to redox reactions. Aqueous KMnO4and L(+)‐ascorbic acid solutions were used to evaluate the redox response of CePO4:Tb3+, appearing as luminescence quenching and recovering, respectively. The particle shape and size of the powder samples depended on heat‐treatment conditions, which had also a large influence on the switching property. As‐prepared nanorod particles were more sensitive to the redox reactions than heat‐treated larger spherical particles, indicating that the switching was governed by the surface state of the particles. The thickness of the thin‐film samples was also an important factor to determine the response to the redox reactions. In any case, our results demonstrate that it is important to control the microstructure of the CePO4:Tb3+materials for their use in luminescence switching devices for the redox monitoring.