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A facile route to the controlled synthesis of β-NaLuF4:Ln3+ (Ln = Eu, Tb, Dy, Sm, Tm, Ho) phosphors and their tunable luminescence properties†
CrystEngComm ( IF 3.1 ) Pub Date : 2018-07-13 00:00:00 , DOI: 10.1039/c8ce00932e
Junfeng Yang 1, 2, 3, 4 , Lina Song 1, 2, 3, 4 , Xiaoxue Wang 1, 2, 3, 4 , Nan Luo 1, 2, 3, 4 , Hongyue Wu 1, 2, 3, 4 , Shucai Gan 1, 2, 3, 4 , Lianchun Zou 1, 2, 3, 4
Affiliation  

Highly uniform and monodisperse β-NaLuF4:Ln3+ (Ln = Eu, Tb, Dy, Sm, Tm, Ho) hexagonal prisms have been synthesized via a facile two-step hydrothermal method without any organic surfactants. The structures, morphologies and luminescence properties of the samples were investigated through XRD, SEM, and PL spectra. Furthermore, the shapes and sizes of the products can be further manipulated through adjusting the pH values of initial solutions. Upon excitation at 368 nm, the β-NaLuF4:Tb3+ phosphors exhibit the strongest green emission at pH = 9.0. Moreover, the photoluminescence properties of β-NaLuF4:Ln3+ were studied in detail, and it was found that the photoluminescence color of the β-NaLuF4:0.03Tm3+ phosphor was close to standard blue light (0.14, 0.08). Under 356 nm irradiation, multicolour emission from blue to sapphire and then to pale green has been achieved from the Tm3+/Dy3+ co-doped β-NaLuF4 samples. The energy transfer process from Tm3+ to Dy3+ was studied and was demonstrated to be an electric dipole–dipole interaction mechanism. It is obvious that the β-NaLuF4 phosphors may have potential applications in the field of full-color displays.

中文翻译:

一种简便路线β-NaLuF的受控合成4:LN 3+(LN =铕,铽,镝,钐,铥,钬)的磷光体和它们的可调谐的发光性能

高度均匀的单分散β-NaLuF 4:LN 3+(LN =铕,铽,镝,钐,铥,钬)六角棱镜合成了通过一种容易的两步水热法,没有任何有机表面活性剂。通过XRD,SEM和PL光谱研究了样品的结构,形态和发光特性。此外,可以通过调节初始溶液的pH值来进一步控制产物的形状和大小。当在368 nm激发,β型NaLuF 4:Tb的3+的磷光体显示出在pH = 9.0的最强的绿色发光。此外,光致发光特性β-NaLuF 4:LN 3+详细研究了,并且发现,该β-NaLuF的光致发光颜色4:0.03Tm 3+荧光体接近标准蓝光(0.14,0.08)。下356纳米照射,从蓝色多色发光成兰宝石,然后到淡绿色已经从实现的Tm 3+ / DY 3+共掺杂-β-NaLuF 4样品。研究了从Tm 3+到Dy 3+的能量转移过程,并证明是电偶极-偶极相互作用的机理。很明显的是,β-NaLuF 4磷光体可以在全彩色显示领域的应用潜力。
更新日期:2018-07-13
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