Tuning the Upconversion Luminescence Lifetimes of KYb2 F7 :Ho(3+) Nanocrystals for Optical Multiplexing.
Tuning the Upconversion Luminescence Lifetimes of KYb2 F7 :Ho(3+) Nanocrystals for Optical Multiplexing.
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DOI：
10.1002/cphc.201500795
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发表时间：
2015-12
期刊：
影响因子：
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通讯作者：
M. Ding;Daqin Chen;Danyang Ma;Peng Liu;Kaixin Song;Hongwei Lu;Z. Ji
中科院分区：
文献类型：
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作者：
M. Ding;Daqin Chen;Danyang Ma;Peng Liu;Kaixin Song;Hongwei Lu;Z. Ji
传统的发光颜色编码受到光谱重叠和背景荧光干扰的限制，从而限制了可在实践中使用的可区分身份的数量。在这里，我们证明了产生不同的时域代码的可能性，专门为一个单一的发射带，使用镧系元素掺杂的上转换纳米晶体。基于浓度猝灭理论，通过改变Ho（3+）离子的掺杂浓度，可以精确控制KYb 2 F7：Ho（3+）纳米晶体的上转换发光动力学，得到了75.8 ~ 1944.5 μs的可调发光寿命，这表明了这些时域编码用于光复用的实用性。
Conventional luminescent color coding is limited by spectral overlap and the interference of background fluorescence, thus restricting the number of distinguishable identities that can be used in practice. Here, we demonstrate the possibility of generating diverse time-domain codes, specially designed for a single emission band, using lanthanide-doped upconversion nanocrystals. Based on the knowledge of concentration quenching, the upconversion luminescence kinetics of KYb2 F7 : Ho(3+) nanocrystals can be precisely controlled by modifying the dopant concentration of Ho(3+) ions, resulting in a tunable emission lifetime from 75.8 to 1944.5 μs, which suggests the practicality of these time-domain codes for optical multiplexing.