CAJ | 학술논문

采用高分子网络凝胶法合成Sm3+掺杂YPO4纳米荧光材料，利用X射线衍射(XRD)、透射电镜(TEM)、傅里叶红外光谱(FT-IR)和荧光光谱等对合成产物的晶体结构、颗粒尺寸、形貌和光学性能进行分析与测试，并研究 Sm3+掺杂浓度(n(Sm)/n(Y+Sm))的影响。结果表明，采用高分子网络凝胶法合成的 YPO4：Sm3+为单一的四方晶系磷钇矿结构的 YPO4晶体，颗粒尺寸约为20 nm。其激发光谱在405 nm 处有一最强激发带，属于 Sm3+的6H5/2-4K11/2跃迁，发射光谱在603 nm处有一最强峰，属于Sm3+的4G5/2-6H7/2跃迁。激发和发射光谱测试结果表明，Sm3+掺杂YPO4荧光材料可以被405 nm波长的光有效地激发，发射出强烈的Sm3+特征橙红色光。当Sm3+掺杂浓度高于2%时观察到浓度猝灭现象，浓度猝灭机理为电多极-电多极相互作用。
채용고분자망락응효법합성Sm3+참잡YPO4납미형광재료，이용X사선연사(XRD)、투사전경(TEM)、부리협홍외광보(FT-IR)화형광광보등대합성산물적정체결구、과립척촌、형모화광학성능진행분석여측시，병연구 Sm3+참잡농도(n(Sm)/n(Y+Sm))적영향。결과표명，채용고분자망락응효법합성적 YPO4：Sm3+위단일적사방정계린을광결구적 YPO4정체，과립척촌약위20 nm。기격발광보재405 nm 처유일최강격발대，속우 Sm3+적6H5/2-4K11/2약천，발사광보재603 nm처유일최강봉，속우Sm3+적4G5/2-6H7/2약천。격발화발사광보측시결과표명，Sm3+참잡YPO4형광재료가이피405 nm파장적광유효지격발，발사출강렬적Sm3+특정등홍색광。당Sm3+참잡농도고우2%시관찰도농도졸멸현상，농도졸멸궤리위전다겁-전다겁상호작용。
Sm3+ doped YPO4 nanocrystals were successfully synthesized via a polyacrylamide gel route. The crystal structure, particle size, morphology, and optical properties of the as-synthesized products were investigated by XRD, SEM, FT-IR and PL. The results reveal that the as-prepared samples have single xenotime structure with particle sizes about 20 nm. The photoluminescence spectra of Sm3+ doped YPO4 nanophosphors show a characteristic orange-red luminescence of Sm3+under 405 nm light excitation. Furthermore, the concentration quenching was observed when the Sm3+doping content was over 2%, and the concentration quenching mechanism was verified as dipole-dipole interaction.