Orange–red light emitting europium-doped calcium molybdate phosphor prepared by high-energy ball milling

Woo Tae Hong; Joo Hyun Lee; Jin Young Park; Hyun Kyoung Yang; Jung Hyun Jeong; Byung Kee Moon

doi:10.1117/1.OE.55.9.097108

22 September 2016 Orange–red light emitting europium-doped calcium molybdate phosphor prepared by high-energy ball milling

Woo Tae Hong, Joo Hyun Lee, Jin Young Park, Hyun Kyoung Yang, Jung Hyun Jeong, Byung Kee Moon

Author Affiliations +

Optical Engineering, Vol. 55, Issue 9, 097108 (September 2016). https://doi.org/10.1117/1.OE.55.9.097108

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 Ca_0.95MoO₄:0.05Eu³⁺ 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).

Citation Download Citation

Woo Tae Hong, Joo Hyun Lee, Jin Young Park, Hyun Kyoung Yang, Jung Hyun Jeong, and Byung Kee Moon "Orange–red light emitting europium-doped calcium molybdate phosphor prepared by high-energy ball milling," Optical Engineering 55(9), 097108 (22 September 2016). https://doi.org/10.1117/1.OE.55.9.097108

Published: 22 September 2016

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