Broadband down-conversion through the co-contribution of simultaneous energy transfer from Eu3+/2+ to Yb3+ and CTS absorption of Yb3+
作者： Huiyun Wang , Song Ye , Song Li , Tianhua Liu , Jian Lin
DOI: 10.1016/J.JALLCOM.2015.05.241
关键词:
摘要: Abstract The europium (Eu) and ytterbium (Yb) co-doped SiO2–Al2O3–MF2 (M = Ca, Sr) oxyfluoride glasses were prepared by the melting-quenching method, in which partial reduction of Eu3+ ions during high temperature fabrication air atmosphere was explained optical basicity model. In this system, near-infrared emission Yb3+ at 974 nm can be observed upon excitation both Eu2+, as well charge transfer state absorption Yb3+. steady time-resolved luminescence spectra measurements carried out to further prove energy from Eu3+/2+ Based on measured decay efficiency quantum are much higher glass containing SrF2 due efficient Eu2+
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