New Violet Phosphor Sr7Al12O25:Eu2+ Synthesized from Sr–Al–O:Eu Powder Mounted on Polycrystalline Alumina
New Violet Phosphor Sr7Al12O25:Eu2+ Synthesized from Sr–Al–O:Eu Powder Mounted on Polycrystalline Alumina
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由安装在多晶氧化铝上的 Sr–Al–O:Eu 粉末合成的新型紫光荧光粉 Sr7Al12O25:Eu2+
DOI：
10.1143/jjap.49.122601
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发表时间：
2010
影响因子：
1.5
通讯作者：
H. Saitoh
中科院分区：
文献类型：
--
作者：
H. Akasaka;H. Tada;T. Ooki;A. Nakamura;K. Komatsu;S. Tsuchida;S. Ohshio;Nobuyoshi Nambu;H. Saitoh
在多晶氧化铝板上以乙二胺四乙酸（EDTA）配合物氧化的Sr-Al-O:Eu粉末为原料，在还原条件下烧结合成了一种新的紫色荧光粉。根据产物的结晶度随原料组成的变化而变化，确定紫色荧光粉的晶相为Sr7Al12O25。Sr7Al12O25:Eu2+的发光波长为410 nm。在1400℃烧结的EDTA配合物中，Sr:Al:Eu = 6.86:8:0.14的组成，Sr7Al12O25:Eu2+仅在Sr7Al12O25的晶相中得到，并且在我们的实验中表现出最高的410 nm的发射强度。烧结时的烧结温度和EDTA配合物中金属的组成由于结晶度的变化影响了发射波长从410 nm到460 nm的变化。这些变化表明，从紫色到绿色的发射颜色是由成分变化或烧结温度控制的。
A new violet phosphor was synthesized by sintering under the reduction condition from the Sr–Al–O:Eu powder oxidized from an ethylenediaminetetraacetic (EDTA) complex on a polycrystalline alumina plate. The crystalline phase of violet phosphor was determined to be Sr7Al12O25 by the change in the crystallinity of the product with a change in the composition of the raw material. The emission wavelength of the phosphor was 410 nm for Sr7Al12O25:Eu2+. For the composition of Sr:Al:Eu = 6.86:8:0.14 in the EDTA complex with sintering at 1400 °C, Sr7Al12O25:Eu2+ was obtained only in the crystalline phase of Sr7Al12O25 and exhibited the highest emission intensity of 410 nm in our experiment. The sintering temperature at sintering and composition of metals in the EDTA complex affected the emission wavelength change from 410 to 460 nm because of change in crystallinity. These changes indicate that the emission color in the range from violet to green is controlled by composition change or sintering temperature.