Tunable upconversion luminescence and energy transfer process between Yb3+ and Er3+ in the CaY4F14

• Published in: Journal of luminescence Vol. 133; no. 1; pp. 226 - 229
• Main Authors: Du, Peng, Xia, Zhiguo, Liao, Libing
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 01.01.2013; Elsevier
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Dopants; Emission; Energy transfer; Exact sciences and technology; Excitation; Fluoride; Frequency conversion ; harmonic generation, including high-order harmonic generation; Fundamental areas of phenomenology (including applications); Luminescence; Nonlinear optical crystals; Nonlinear optics; Optical materials; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optics; Other solid inorganic materials; Photoluminescence; Photons; Physics; Upconversion; Upconversion luminescence; Upconversion luminescence; Optical materials; Fluoride; Upconversion; Non linear material; Photoluminescence; Doped materials; Excitation energy transfer; High temperature; Two-photon processes; Optical frequency conversion; Codoping
• ISSN: 0022-2313; 1872-7883
• DOI: 10.1016/j.jlumin.2011.09.057

Yb3+/Er3+ codoped CaY4F14 materials with tunable upconversion (UC) emission were prepared by a high temperature solid-state method. Based on the UC luminescence properties investigations, it was found that, under 980nm excitation, CaY4F14:Yb3+,Er3+ showed green–yellow–red upconversion luminescence by changing the composition of the Yb3+-Er3+ dopants. It was also found that the green and red emissions originated from the two photon processes, and the ground-state absorption (GSA), excited-state absorption (ESA) and energy transfer (ET) processes between Er3+/Yb3+ ions were involved in the upconverted emission mechanism. The measured lifetimes show a strong dependence on Yb concentration. ▶ Yb3+/Er3+ codoped CaY4F14 materials with tunable upconversion (UC) emission were prepared. ▶ CaY4F14:Yb3+, Er3+ showed green–yellow–red upconversion luminescence by changing the composition of the Yb3+-Er3+ dopants. ▶ Measured lifetimes show a strong dependence on Yb concentration.