Unraveling the Photoluminescence Properties of the
Sr10V6O25 Structure through Experimental
and Theoretical Analyses
Posted on 2020-06-30 - 11:38
White
light photoluminescent materials can overcome many problems
due to an intrinsic color balance, in addition to reducing the cost
for application in emitting components and electronic devices. In
this sense, to observe this phenomenon of photoluminescence, variations
in the synthesis time at low temperatures were carried out, which
also influenced the degree of structural order/disorder of strontium
vanadate (Sr10V6O25, SVO). The microwave-assisted
hydrothermal route allowed us to evaluate the structural and morphological
evolution of the SVO compound. Furthermore, this paper discusses how
van der Waals forces influence the morphological evolution of a semiconductor
as a function of orientation, induction, and dispersion interactions.
The experimental study combined with theoretical approaches provided
information about the structure and electronic properties of SVO.
From the experimental data and theoretical analysis, we propose, for
the first time, that the unit cell of the SVO structure is composed
of three distorted [SrOx] (x = 6, 7, and 9) and two distorted [VO4] clusters. Photoluminescence
measurements revealed an efficient broadband emission, and the conversion
of ultraviolet light excitation into visible light was observed. The
emission chromaticity showed that the structural disorders of the
[SrOx] and [VO4] clusters present
the possibility of change in the Commission Internationale de l’Éclairage
emission color.
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Teixeira, Mayara Mondego; Gouveia, Amanda Fernandes; de Sousa, Alexsandro Gama; da Silva, Luís Fernando; de Oliveira, Regiane Cristina; San-Miguel, Miguel A.; et al. (2020). Unraveling the Photoluminescence Properties of the
Sr10V6O25 Structure through Experimental
and Theoretical Analyses. ACS Publications. Collection. https://doi.org/10.1021/acs.jpcc.0c02768
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AUTHORS (8)
MT
Mayara Mondego Teixeira
AG
Amanda Fernandes Gouveia
Ad
Alexsandro Gama de Sousa
Ld
Luís Fernando da Silva
Rd
Regiane Cristina de Oliveira
MS
Miguel A. San-Miguel
ML
Máximo Siu Li
EL
Elson Longo