Journal
MATERIALS LETTERS
Volume 169, Issue -, Pages 135-139Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2016.01.102
Keywords
Phosphors; Upconversion; Cathodoluminescence; Rare-earth
Funding
- National Research Foundation of Korea (NRF) - Korea Government (MISP) [2015R1A5A1037656]
- National Research Foundation of Korea [2015R1A5A1037656] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Upconversion (UC) emission and cathodoluminescence (CL) properties of Ho3+/Yb3(+)-codoped BiOCI phosphors were reported. Under 980 nm light excitation, all the samples exhibited strong green and red UC emissions corresponding to the (F-5(4), S-5(2)) ->(5) I-8 and F-5(5) -> I-5(8) transitions of Ho3+ ions, respectively. Furthermore, the UC emission intensity as a function of Yb3+ ion concentration was investigated to determine an optimum doping concentration and the UC mechanism was found to be a two-photon process. Additionally, excellent CL properties were observed in Ho3+/Yb3+-codoped BiOCI phosphors and the CL emission intensity increased with increasing the accelerating voltage and filament current. (C) 2016 Elsevier B.V. All rights reserved.
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