Wei Haoming, Wu Yangqing
School of Physics and Physical Engineering, Qufu Normal University, Qufu 273165, China.
Materials (Basel). 2023 Jun 27;16(13):4637. doi: 10.3390/ma16134637.
In this work, Li-doped NiO:Yb,Er thin films are obtained via pulsed laser deposition. It was found that the films exhibit high transparency in the visible region and clearly red up-conversion luminescence under 980 nm excitation. Doping with Li can adjust the up-conversion emission intensity of the films. Moreover, all the films have p-type conductivity with a single activation energy of around 360 meV. The sheet resistivity of the films can be improved through changing the doping concentration of Li ions. Taken together, 5% is the best doping concentration for the potential application of this kind of film.
在本工作中，通过脉冲激光沉积法制备了掺锂的NiO:Yb,Er薄膜。发现该薄膜在可见光区域具有高透明度，并且在980 nm激发下呈现出明显的红色上转换发光。掺锂可以调节薄膜的上转换发射强度。此外，所有薄膜均具有p型导电性，单一激活能约为360 meV。通过改变锂离子的掺杂浓度可以提高薄膜的表面电阻率。综上所述，5%是这种薄膜潜在应用的最佳掺杂浓度。
