22 September 2016 Orange–red light emitting europium-doped calcium molybdate phosphor prepared by high-energy ball milling
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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).
© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
Woo Tae Hong, Joo Hyun Lee, Jin Young Park, Hyun Kyoung Yang, Jung Hyun Jeong, 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 . Submission:
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