Pr3+ doped Li2SrSiO4: an efficient visible-ultraviolet C up-conversion phosphor
Pr3+ doped Li2SrSiO4: an efficient visible-ultraviolet C up-conversion phosphor
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DOI：
10.1016/j.ceramint.2020.10.058
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发表时间：
2020-10
影响因子：
5.2
通讯作者：
Yin Zhiqian;Peng Yuan;Zheng Zhu;Tianyi Li;Yanmin Yang
中科院分区：
文献类型：
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作者：
Yin Zhiqian;Peng Yuan;Zheng Zhu;Tianyi Li;Yanmin Yang
上转换(UC)荧光粉将可见光转换为紫外光(UVC)，在许多领域具有潜在的应用前景。然而，较低的能量转换效率限制了它的实际应用。在这里，我们证明了合成的Li2SrSiO4：Pr3+荧光粉是一种高效的紫外光荧光粉，发射功率为0.25 mW/cm2(UVC波段为0.1 mW/cm2)，可以在10分钟内有效地灭活细菌。根据可见光和UVC在普通玻璃中的不同传播特性，提出了将这种荧光粉涂覆在共焦显微镜载玻片和盖板上的方案，以实现对微生物在UVC照射下的响应的实时观察，从而为微生物研究提供了一种新的有效方法。
Up-conversion (UC) phosphor converting visible light into ultraviolet C light (UVC) has potential application in many fields. However, the lower energy conversion efficiency limits its practical application. Here, we proven that the synthesized Li2SrSiO4:Pr3+phosphor is an efficient UV phosphor with the emission power of 0.25 mW/cm2(0.1 mW/cm2for UVC band), which can effectively inactivate bacteria within 10 min. Based on the different propagation properties of visible light and UVC in ordinary glass, we proposed a scheme to coat this phosphor inside the slide and cover glass of a confocal microscope to realize the real-time observation of the response of microorganisms under UVC irradiation, thereby providing a new effective method for microbial research.