One-pot synthesis of single phase Eu2+-activated MSi2O2N2 (M = Sr, Ba) by Controlling precursors and oxygen/nitrogen ratio
One-pot synthesis of single phase Eu2+-activated MSi2O2N2 (M = Sr, Ba) by Controlling precursors and oxygen/nitrogen ratio
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DOI：
10.1016/j.jlumin.2023.119714
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发表时间：
2023-01-23
影响因子：
3.6
通讯作者：
Toda，Kenji
中科院分区：
文献类型：
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作者：
Iwaki，Masato;Tanaka，Ryo;Toda，Kenji
MSi_2O_2N_2：Eu ~（2+）（M= Sr，Ba）发光材料由于其独特的光学性质而备受关注。这些氮氧化物磷光体通常通过两步煅烧通过M2 SiO 4正硅酸盐前体获得。本文通过对原料、加热温度等实验条件的优化，采用一锅固相反应法成功制备了高纯度的Eu 2+激活的MSi 2 O2 N2荧光粉。结果表明，Eu ~（2+）激活的MSi_2O_2N_2的形成与中间化合物和氧氮比有关。系统地研究了纳米粒子的形貌、光致发光和激发光谱、量子效率、寿命和热猝灭行为。
MSi2O2N2:Eu2+(M= Sr, Ba) are attractive luminescent materials due to their unique optical properties. These oxynitride phosphors are normally obtained by two-step calcination throughM2SiO4orthosilicate precursors. In this work, high purity Eu2+-activatedMSi2O2N2phosphors were successfully prepared via the one-pot solid state reaction by optimizing such experimental conditions as raw materials and heating temperature. Based on the result, it is revealed that the single phase Eu2+-activatedMSi2O2N2is formed depending on the intermediate compounds and the oxygen/nitrogen ratio. Moreover, particle morphology, photoluminescence and excitation measurement, quantum efficiencies, lifetime and thermal quenching behaviors are systematically investigated.