根据电子俘获机制,提出了CaS:Eu,Sm红外上转换的衰减模型,建立了速率方程并进了初步的求解,其解具有三级指数衰减的形式。从实验上测定了CaS:Eu,Sm在不同温度下的红外土转换光衰减特性,对实验结果进行了非线性拟合,拟合结果也具有三级指数衰减规律的形式。
According to electron trapping mechanism, the up conversion luminescence decay model of electron trapping materials CaS:Eu, Sm was proposed, and the related rate equations were established. The solution of rate equations is of 3 order exponential decay form. The up conversion luminescence decay curves of the materials at different temperature were measured and analyzed by nonlinear curve fit method, and the expression of nonlinear curve fit is of the same form as the solution.