Absolute quantum yield measurements of colloidal NaYF4: Er3+, Yb3+ upconverting nanoparticles
Absolute quantum yield measurements of colloidal NaYF4: Er3+, Yb3+ upconverting nanoparticles
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DOI：
10.1039/c0nr00253d
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发表时间：
2010-01-01
期刊：
影响因子：
6.7
通讯作者：
van Veggel, Frank C. J. M.
中科院分区：
文献类型：
--
作者：
Boyer, John-Christopher;van Veggel, Frank C. J. M.
在这篇文章中，我们描述了一种基于使用市售荧光计和积分球测量上转换纳米材料的绝对量子产率（QY）的技术。使用该装置，我们成功地获得了镧系元素掺杂的上转换纳米颗粒的发光效率数据（泵浦激光、吸收泵浦和可见发射强度）。对于几种NaYF4：2%Er3+，20%Yb3+纳米颗粒，测量的QY在0.005%至0.3%的范围内，颗粒尺寸在10至100 nm的范围内，而对于本体样品测量的QY为3%。
In this communication we describe a technique for measuring the absolute quantum yields (QYs) of upconverting nanomaterials based on the use of a commercially available fluorimeter and an integrating sphere. Using this setup, we have successfully acquired luminescence efficiency data (pump laser, absorbed pump, and visible emitted intensities) for lanthanide-doped upconverting nanoparticles. QYs in the range of 0.005% to 0.3% were measured for several NaYF4: 2% Er3+, 20% Yb3+ nanoparticles with particle sizes ranging from 10 to 100 nm while a QY of 3% was measured for a bulk sample.