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首页> 外文期刊>RSC Advances >Investigation of luminescence properties and the energy transfer mechanism of L(i)6Lu(BO3)(3): Ce3+, Tb3+ green-emitting phosphors
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Investigation of luminescence properties and the energy transfer mechanism of L(i)6Lu(BO3)(3): Ce3+, Tb3+ green-emitting phosphors

机译：L（i）6Lu（BO3）（3）：Ce3 +，Tb3 +发射绿色荧光粉的发光性质和能量转移机理的研究

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摘要

Li6Lu(BO3)(3): Ce3+, Tb3+ phosphor was synthesized via a conventional solid-state method. The phase purity, photoluminescence properties, energy transfer mechanism, thermal stability and chromaticity coordinates were investigated. The absorption spectrum was comprised of broad bands in the UV region and the emission spectrum was consisted of characteristic peaks from both Ce3+ and Tb3+ under UV excitation. The amount of Ce3+ was fixed to 3 mol% while Tb3+ was varied from 20 to 80 mol% and the chromaticity coordinates were tuned from the blue to green region. The energy transfer mechanism between Ce3+ and Tb3+ was attributed to a quadrupole-quadrupole interaction and the critical distance was measured to be 8.12 angstrom. The overall performance of the phosphor was enhanced by the efficient energy transfer between Ce3+ and Tb3+ ions.
机译：通过传统的固态方法合成了Li6Lu（BO3）（3）：Ce3 +，Tb3 +荧光粉。研究了相纯度，光致发光性质，能量转移机理，热稳定性和色度坐标。吸收光谱由紫外线区域的宽带组成，发射光谱由紫外线激发下Ce3 +和Tb3 +的特征峰组成。 Ce3 +的含量固定为3 mol％，而Tb3 +的含量从20 mol％更改为80 mol％，并且色度坐标从蓝色变为绿色。 Ce3 +和Tb3 +之间的能量转移机制归因于四极-四极相互作用，测得的临界距离为8.12埃。 Ce3 +和Tb3 +离子之间的有效能量转移增强了磷光体的整体性能。

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