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