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| 1 | Ca_3Al_2O_6:Eu/Tb的溶胶-凝胶法合成及发光性能研究显示文摘运用Pechini溶胶-凝胶法成功合成了Ca_3Al_2O_6:Eu/Tb发光材料。通过X射线衍射(XRD),傅里叶变换红外光谱(FTIR),扫描电镜(SEM),光致发光(PL)等表征方法对样品的结构、形貌和发光性能进行了详细的研究。探讨了煅烧温度对材料结构的影响,确定了最佳煅烧温度为900℃,远低于传统固相法的1350℃;考察了掺杂浓度对材料发光性能的影响,确定了Eu^(3+)和Tb^(3+)的最佳掺杂浓度分别为5.0 mol%和1.0 mol%。 | 王阳春 | 2018 | 中国陶瓷工业2018，25，2： | 0 |
| 2 | Energy transfer,superior thermal stability and multi-color emitting properties of langbeinite-type solid-solution phosphor K_(2)Dy_(1.5-x)Eu_(x)Ta_(0.5)(PO_(4))_(3)显示文摘Langbeinite type compounds are a large kind of oxometallate with good flexibility structure.Herein,we synthesized a new langbeinite type compound K_(2)Dy_(1.5)Ta_(0.5)(PO_(4))_(3),in which the Dy^(3+)and Ta^(5+)were blended to occupy the same crystallographic sites.Simultaneously,solid solutions of K_(2)Dy_(1.5-x)Eu_(x)Ta_(0.5)(PO_(4))_(3)(x=0-1.5)were prepared and their photoluminescence properties were investigated.Due to energy transfer from Dy3+to Eu3+,both Dy3+and Eu3+characteristic emissions are observed under 393 nm light excitation.The emitting color of K_(2)Dy_(1.5-x)Eu_(x)Ta_(0.5)(PO_(4))_(3)turns from green through yellow to red by simply adjusting the Eu^(3+)concentration from 0 to 0.4.Moreover,K_(2)Dy_(1.48)Eu_(0.02)Ta_(0.5)(PO_(4))_(3)phosphor possesses excellent fluorescence thermal stability and exhibits zero thermal quenching at 150℃.These results manifest that K_(2)Dy_(1.5-x)Eu_(x)Ta_(0.5)(PO_(4))_(3)solutions are promising multi-color emitting phosphors candidate for near-UV LED. | Shirui Zhang Dan Zhao Shaojie Dai Hongli Lou Ruijuan Zhang | 2021 | Journal of Rare Earths2021，39，8： | 0 |
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