Department of Physics, University of the Free State, P. O. Box 339, Bloemfontein, South Africa.
Department of Physics, R.T.M. Nagpur University, Nagpur, India.
Luminescence. 2021 Dec;36(8):1847-1850. doi: 10.1002/bio.3923. Epub 2020 Aug 26.
A BaY F :Yb ,Ho phosphor was synthesized using a simple precipitation method. The temperature-sensing properties of BaY F :Yb ,Ho phosphor were investigated using the fluorescence intensity ratio (FIR) of the thermally coupled energy levels ( F and S ) of Ho . Energy transitions F → I and S → I gave rise to emission peaks at 538 nm and 549 nm, respectively. The areas under these two emission peaks were used to calculate the FIR. Temperature-dependent upconversion luminescence was recorded in the temperature range 303-623 K using a 980 nm laser excitation source. The results suggested that the BaY F :Yb , Ho phosphor has the potential to be used as a non-contact optical temperature sensor.
采用简单的沉淀法合成了 BaYF:Yb,Ho 荧光粉。利用 Ho 的热耦合能级（F 和 S）的荧光强度比（FIR）研究了 BaYF:Yb,Ho 荧光粉的温度传感性能。能级跃迁 F→I 和 S→I 分别产生了 538nm 和 549nm 的发射峰。这两个发射峰的面积用于计算 FIR。使用 980nm 激光激发源在 303-623K 的温度范围内记录了上转换发光的温度依赖性。结果表明，BaYF:Yb,Ho 荧光粉有望用作非接触式光学温度传感器。
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