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研究了发光体系中能量传递对发光时间演化的影响.针对以往各种能量传递模型中存在的问题，同时考虑施主-受主（D-A）能量传递和施主-施主（D-D）能量迁移，将只考虑D-A能量传递的I-H,D-H,V-F模型与考虑到D-D能量迁移的跳跃模型B分别结合起来，建立了I-H-B,D-H-B,V-F-B三种综合模型.采用这些模型对钾冰晶石（elpasolite）体系的施主发光激发态占据概率进行数值模拟，给出不同D、A浓度下及不同D-A,D-D作用强度条件下施主发光的时间演化曲线，发现V-F-B模型给出的曲线最合理.然后The effects of energy transfer on luminescence decay curves are studied. Donor-acceptor energy transfer and donor-donor energy migration are considered simultaneously for solving the problems in previous models. Three models named I-H-B,D-H-B and V-F-B are established here. The RE ions luminescence decay curves of the elpasolite system under different conditions are calculated using the above models. The conclusion is that the V-F-B model is the best. Then the luminescence decay curves from the 4G5/2 state to 6H7/2 state of Sm3+ at 170K in Cs2NaSmxY1-xCl6 for six different concentrations are simulated successfully using V-F-B model.
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中国物理学会期刊
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