Park, Sangmoon Cho, So-Hye 2024-01-20T10:33:27Z 2024-01-20T10:33:27Z 2021-09-05 2014-01-25 0925-8388 https://pubs.kist.re.kr/handle/201004/127209 Luminescent materials composed of Y1-m-nErmYbnOCl (m = 0.001-0.1, n = 0.005-0.1) were prepared via a solid-state reaction using NH4Cl flux. Photoluminescence spectra, the dependence of the luminescent intensity as a function of Er3+ content, and their CIE coordinates of the Er3+-doped layered YOCl compounds were also investigated under near-ultraviolet (NUV) and visible lights. The spectral up-converting properties of Er3+ and Er3+-Yb3+ in YOCl phosphors were elucidated under 980 and 1550 nm diode laser irradiations. This up-conversion emission spectra and the pump power dependence versus emission intensity observed in the Y0.9Er0.1OCl up-conversion phosphors gave rise to one- and two-photon processes. The up-conversion mechanism of Er3+ and Yb3+ ions in YOCl was described by a schematic energy-level diagram. Through the use of these up-conversion luminescent materials, the desired emitting lights throughout the orange and red regions of the spectra were achieved. (C) 2013 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE SA UP-CONVERSION LUMINESCENCE GREEN Spectral-converting behaviors of Er3+ and Er3+-Yb3+ doped YOCl phosphors Article 10.1016/j.jallcom.2013.09.118 1 JOURNAL OF ALLOYS AND COMPOUNDS, v.584, pp.524 - 529 JOURNAL OF ALLOYS AND COMPOUNDS 584 524 529 scie scopus 000327135400084 2-s2.0-84885368757 Chemistry, Physical Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Chemistry Materials Science Metallurgy & Metallurgical Engineering Article UP-CONVERSION LUMINESCENCE GREEN Optical materials Solid state reactions X-ray diffraction Luminescence