Luminescence properties of Ca0.65La0.35F2.35:Yb3+, Er3+ with enhanced red emission via upconversion
作者： Peng Du , Zhiguo Xia , Libing Liao
DOI: 10.1016/J.MATERRESBULL.2010.12.031
关键词: Absorption (electromagnetic radiation) 、 Materials science 、 Photon upconversion 、 Analytical chemistry 、 Excitation 、 Luminescence 、 Two-photon excitation microscopy 、 Ion 、 X-ray crystallography 、 Excited state
摘要: Abstract Yb3+/Er3+ codoped Ca0.65La0.35F2.35 materials with intense red emission via upconversion were prepared by a high temperature solid-state method. Based on the luminescence properties investigations, it was found that, under 980 nm excitation, Ca0.65La0.35F2.35:20 mol.%Yb3+, xEr3+ showed luminescence, which ascribed to 4F9/2 → 4I15/2 transition of Er3+, although both green and emissions could be detected. It also that originated two photon processes, ground-state absorption (GSA), excited-state (ESA) energy transfer (ET) processes between Er3+/Yb3+ ions Er3+/Er3 involved in enhanced mechanism.
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