Efficient and promising luminescent borate glass doped with tin was fabricated and examined. This unique optical material is characterized by two considerably different Sn emission centers affected by distinct crystal field strengths. Firstly, the efficient broadband luminescence can be selectively excited at 266 nm and 360 nm; however, simultaneous activation of both blue and red emission bands is possible as a result of the overlapping of PLE spectra. Consequently, intense and broad emission covering the whole visible light spectrum with an extremely high CRI of 97 is achieved. This result is exceptional for a single phosphor light source. The resulting luminescence glass color can be smoothly adjusted from cool-white to warm-white utilizing anti-overlapping or overlapping excitation ranges especially between 300 and 340 nm. A dual-wavelength-excitation experiment was performed to demonstrate the excellent control of the balance between the blue and red emissions by varying the power of the excitation diode. The highest quantum yield (QY) of the LaMBO:Sn emission was found to be 85%.

中文翻译：

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使用新颖的双激发设计和高效的 Sn 掺杂凝聚硼酸盐玻璃荧光粉的精细可调白光源


制造和检查了掺锡的高效且有前途的发光硼酸盐玻璃。这种独特的光学材料的特点是两个截然不同的 Sn 发射中心受不同晶体场强度的影响。首先，高效的宽带发光可以在 266 nm 和 360 nm 处选择性激发;然而，由于 PLE 光谱的重叠，蓝色和红色发射带同时激活是可能的。因此，实现了覆盖整个可见光谱的强烈而广泛的发射，具有 97 的极高 CRI。对于单个荧光粉光源来说，这一结果非常出色。所得发光玻璃颜色可以利用防重叠或重叠激发范围（尤其是在 300 至 340 nm 之间）从冷白平滑调整为暖白。进行了双波长激发实验，以证明通过改变激发二极管的功率来出色地控制蓝光和红光发射之间的平衡。发现 LaMBO：Sn 发射的最高量子产率 （QY） 为 85%。