Qian Haiyue, Zhang Tianqing, Jiang Xiliang, Wang Haihao, Yang Weiling, Li Chun
JiLin Technology College of Electronic Information, JiLin, 132021 China.
School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022 China.
J Mater Sci Mater Electron. 2022;33(29):22718-22727. doi: 10.1007/s10854-022-08963-7. Epub 2022 Sep 25.
Avalanche phenomenon uses critical pump power to produce extreme nonlinear behavior from small disturbances, and has gradually become known. Here, it is reported that the strong green up-conversion emission produced in NaBi(WO) phosphor by the positive feedback enhancement of the energy transfer process. The power dependence indicates that the photon avalanche process has occurred. Contrary to other up-conversion mechanisms, photon avalanche (PA) is a bifurcation phenomenon: avalanches occur above the critical excitation power. The experimental results are analyzed using the rate equation model. The high-response photon avalanche process produced by Yb and Ho ions is discussed in detail. The results show that PA can not only improve the brightness and efficiency of up-conversion, but also has a wider range of applications than traditional up-conversion materials, especially in the detection material of temperature sensor plays an important role.
雪崩现象利用临界泵浦功率从小扰动中产生极端非线性行为，并且已逐渐为人所知。在此，据报道，通过能量转移过程的正反馈增强，在NaBi(WO)荧光粉中产生了强烈的绿色上转换发射。功率依赖性表明光子雪崩过程已经发生。与其他上转换机制相反，光子雪崩（PA）是一种分岔现象：雪崩发生在临界激发功率之上。使用速率方程模型对实验结果进行了分析。详细讨论了由Yb和Ho离子产生的高响应光子雪崩过程。结果表明，PA不仅可以提高上转换的亮度和效率，而且比传统上转换材料具有更广泛的应用，特别是在温度传感器检测材料中发挥着重要作用。
