Abstract:The rare earth Er3+ doped and Er3+-Yb3+ co-doped fluoride samples were prepared. Under 980 nm laser excitation, the intense red (650 nm) and green (545 nm) upconversion luminescence was obtained corresponding to the transitions 4S3/2, 2H11/2—4I15/2 and 4F9/2—4I15/2, respectively. For the Er3+-Yb3+ co-doped fluoride samples, it was found that the ratio of the red upconversion luminescence to the green one decreases as the Er3+ concentration increases. The dependence of upconversion intensities on excitation power indicates that two-photon absorption processes are responsible for the upconverted luminescence. The possible upconversion mechanisms of the red and green emissions are discussed based on the energy-matching conditions and the quadratic dependence on excitation power.
雷军辉,肖思国,闫 磊,刘政威 . Er3+单掺,Er3+/Yb3+共掺杂氟化物中红绿上转换荧光机理实验探索[J]. 光谱学与光谱分析, 2005, 25(09): 1382-1384.
LEI Jun-hui, XIAO Si-guo, YAN Lei, LIU Zheng-wei. The Upconversion Mechanisms for the Red and Green Emissions in Er3+ Doped and Er3+-Yb3+ Codopoed Fluoride Materials Based on Experiment . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(09): 1382-1384.