Multicolor emission in single-phase Ca(MoO4)(WO4):Dy3+, Eu3+ materials prepared by rapid synthesis
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2017
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INTERNATIONAL CONFERENCE ON LUMINESCENCE, 18th
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Resumo
Solid state materials with dynamic emission colors form the basis of future smart lighting systems
for a wide variety of everyday applications [1]. For this reason, the rare earth ions (RE3+) doping
materials overtake the design of such systems exhibit easy tuning of colors and likewise offer
straightforward spectral interpretations with their narrow lines characteristics.
In this work we report preparation as well as the spectroscopic properties of the single phase new
highly tricolor luminescent emitting of Eu3+, Dy3+ codoped into the Ca(MO4)(WO4) host lattice.
The materials were prepared at room temperature exposed to ultrasonic irradiation for 30 min from
stoichiometry aqueous solutions of Na2MoO4, Na2WO4, CaCl2, EuCl3 and DyCl3 (XDy: 0.3; XEu:
0.1 mol% of the Ca2+ amount). The as prepared materials were washed with distilled water, filtered
and after dried.
In the excitation spectrum,
there is a broad band in the
range 220-350 nm
corresponding to the Ligandto-
metal charge transfer
(LMCT) (Fig.). This band
can be deconvoluted into two
bands. The band located at
270 nm is due only to the
charge transfer O2-W6+,
whereas that centered at 300 nm
indicates energy transfer from
O2-Mo6+, and O2-Eu3+.
The emission arising mainly from the Dy3+ 4F9/26H15/2, 6H13/2 and Eu3+ 5D07F2, 7F4 transitions
are due to the 488, 575, 614 and 700 nm, respectively (Fig.). In the 353 nm excitation wavelength
the phosphor exhibits warm white color emission.
These results suggest that Ca(MoO4)(WO4):Dy3+, Eu3+ could act as a multicolor phosphor in solid
state-lighting technology.
Como referenciar
BARBOSA, HELLIOMAR P.; PEDROSO, CASSIO C.S.; SILVA, IVAN G.N.; FELINTO, MARIA C.F.C.; MALTA, OSCAR L.; BRITO, HERMI F. Multicolor emission in single-phase Ca(MoO4)(WO4):Dy3+, Eu3+ materials prepared by rapid synthesis. In: INTERNATIONAL CONFERENCE ON LUMINESCENCE, 18th, August 27 - September 01, 2017, João Pessoa, PB. Abstract... p. 393-393. Disponível em: http://repositorio.ipen.br/handle/123456789/28668. Acesso em: 27 Mar 2026.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.