Synthesis and luminescence properties of Eu{sup 3+} doped BaGd{sub 2}Ti{sub 4}O{sub 13} phosphors

Journal Article · Sat Feb 01 04:00:00 EST 2014 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2013.11.009· OSTI ID:22345224

Lee, Soo Hyun

Highlights: • Novel BaGd{sub 2}Ti{sub 4}O{sub 13} (BGT):Eu{sup 3+} phosphors were synthesized by a sol–gel method. • PL and CL spectra showed the dominant emissions due to {sup 5}D{sub 0} → {sup 7}F{sub 1}, {sup 7}F{sub 2} transitions. • These spectra showed the same CIE values which fall in the reddish-orange region. - Abstract: We synthesized the trivalent europium ions (Eu{sup 3+}) doped BaGd{sub 2}Ti{sub 4}O{sub 13} (BGT) phosphors by a sol–gel method and investigated their luminescence properties by varying the dopant concentration. The BGT host material showed the pure orthorhombic phase after annealing at 1350 °C for 40 h. The photoluminescence (PL) emission of BGT:Eu{sup 3+} phosphors exhibited {sup 5}D{sub 0} → {sup 7}F{sub J} {sub =} {sub 1,2,3,4} transitions, resulting in the reddish-orange color under 395 nm of excitation wavelength. From the PL results, an optimized doping concentration of Eu{sup 3+} ions was found to be at 8 mol%. The obtained cathodoluminescence spectra were similar to the PL spectra. The BGT:Eu{sup 3+} phosphors can help to emit a natural white light for near-ultraviolet and visible excitation wavelengths based white light-emitting diodes.

• OSTI ID: 22345224
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 50; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
CATHODOLUMINESCENCE
DOPED MATERIALS
EUROPIUM IONS
EXCITATION
LIGHT EMITTING DIODES
ORTHORHOMBIC LATTICES
PHOSPHORS
PHOTOLUMINESCENCE
SOL-GEL PROCESS
SPECTRA
SYNTHESIS
WAVELENGTHS
X-RAY DIFFRACTION