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首页> 外文期刊>Science and Technology of Advanced Materials >Frequency up-conversion luminescence in Yb~(3+)-Ho~(3+) co-doped Pb_xCd_(1-x)F_2 nano-crystals precipitated transparent oxyfluoride glass-ceramics
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Frequency up-conversion luminescence in Yb~(3+)-Ho~(3+) co-doped Pb_xCd_(1-x)F_2 nano-crystals precipitated transparent oxyfluoride glass-ceramics

机译：Yb〜（3 +）-Ho〜（3+）共掺杂Pb_xCd_（1-x）F_2纳米晶体中析出的透明氟氧化物玻璃陶瓷的频率上转换发光

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摘要

Oxyfluoride glasses were developed with composition 30SiO_2·15AlO_(1.5)·28PbF_2·22CdF_2·(4.9 - x)GdF_3·0.1HoF_3·x YbF_3 (x = 0, 0.1, 0.2, 0.5, 1, 2, 3, and 4) in mol%. Powder X-ray diffraction analysis revealed that the heat-treatments of the oxyfluoride glasses at the first crystallization temperature cause the precipitation of Yb~(3+)-Ho~(3+) co-doped fluorite-type nano-crystals of about 17.8 nm in diameter in the glass matrix. These transparent glass-ceramics exhibited very strong green up-conversion luminescence due to the Ho~(3+): (~5F_4, ~5S_2) → ~5I_8 transition under 980 nm excitation. The intensity of the green up-conversion luminescence in the glass-ceramics was much stronger than that in the precursor oxyfluoride glass. The reasons for the highly efficient Ho~(3+) up-conversion luminescence in the oxyfluoride glass-ceramics are discussed.
机译：氟氧化物玻璃的成分为30SiO_2·15AlO_（1.5）·28PbF_2·22CdF_2·（4.9-x）GdF_3·0.1HoF_3·x YbF_3（x = 0，0.1，0.2，0.5，1，2，3，4）在摩尔％。粉末X射线衍射分析表明，在第一结晶温度下对氟氧化物玻璃进行热处理会导致约17.8的Yb〜（3 +）-Ho〜（3+）共掺杂萤石型纳米晶体的析出。在玻璃基质中的直径为100 nm。这些透明的玻璃陶瓷在980 nm激发下由于Ho〜（3+）：（〜5F_4，〜5S_2）→〜5I_8跃迁而表现出非常强的绿色上转换发光。玻璃陶瓷中绿色上转换发光的强度比前体氟氧化物玻璃中的强度高得多。讨论了氟氧化物玻璃陶瓷中高效的Ho〜（3+）上转换发光的原因。

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