Materials, Photonic Devices, and Sensors

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

[+] Author Affiliations
Woo Tae Hong, Joo Hyun Lee, Jin Young Park, Hyun Kyoung Yang

Pukyong National University, Department of LED Convergence Engineering, Sinseon-ro 365, Busan 48547, Republic of Korea

Jung Hyun Jeong, Byung Kee Moon

Pukyong National University, Department of Physics, Yongso-ro 45, Busan 48513, Republic of Korea

Opt. Eng. 55(9), 097108 (Sep 22, 2016). doi:10.1117/1.OE.55.9.097108
History: Received June 30, 2016; Accepted September 1, 2016
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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).

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Woo Tae Hong ; Joo Hyun Lee ; Jin Young Park ; Hyun Kyoung Yang ; Jung Hyun Jeong, et al.
"Orange–red light emitting europium-doped calcium molybdate phosphor prepared by high-energy ball milling", Opt. Eng. 55(9), 097108 (Sep 22, 2016). ; http://dx.doi.org/10.1117/1.OE.55.9.097108


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