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Optical Engineering

Orange–red light emitting europium-doped calcium molybdate phosphor prepared by high-energy ball milling
Author(s): Woo Tae Hong; Joo Hyun Lee; Jin Young Park; Hyun Kyoung Yang; Jung Hyun Jeong; Byung Kee Moon
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Paper Abstract

Europium-doped calcium molybdates (CaMoO4:Eu3+) were successfully synthesized by a high-energy ball milling method. The x-ray diffraction patterns confirmed their powellite structure, and the field emission scanning electron microscope image exhibited the spherical particles with submicron size. The photoluminescence (PL) properties of Eu3+ in these phosphors were also studied by analyzing the excitation and emission spectra for the effect of europium concentration. The CaMoO4:Eu3+ PL excitation and PL spectra show charge transfer band and several transition peaks correlated with host lattice band gap and f-f transitions of Eu3+, respectively. By sintering Ca0.95MoO4:0.05Eu3+ phosphor at 1200°C, PL intensity has a maximum value at 618 nm with Commision Internationale de I’Eclairage 1931 (CIE 1931) chromaticity coordinates (0.609, 0.343).

Paper Details

Date Published: 22 September 2016
PDF: 4 pages
Opt. Eng. 55(9) 097108 doi: 10.1117/1.OE.55.9.097108
Published in: Optical Engineering Volume 55, Issue 9
Show Author Affiliations
Woo Tae Hong, Pukyong National Univ. (Republic of Korea)
Joo Hyun Lee, Pukyong National Univ. (Republic of Korea)
Jin Young Park, Pukyong National Univ. (Republic of Korea)
Hyun Kyoung Yang, Pukyong National Univ. (Republic of Korea)
Jung Hyun Jeong, Pukyong National Univ. (Republic of Korea)
Byung Kee Moon, Pukyong National Univ. (Republic of Korea)


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