Modification of erbium photoluminescence excitation spectra for the emission wavelength 1.54μm in mesoscopic structures

Гапоненко, Н. В.; Unuchak, D. M.; Мудрый, А. В.; Malyarevich, G. K.; Gusev, O. B.; Stepikhova, M. V.; Krasilnikova, L. V.; Stupak, A. P.; Kleshcheva, S. M.; Samoĭlovich, M. I.; Tsvetkov, M. Yu.

doi:10.1016/j.jlumin.2006.07.015

Cited by 8 publications

(3 citation statements)

References 11 publications

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“…In addition, it should be noted that the presence of un-oxidized metal in depth inside the PAFs obviously affects the electrophysical and optical characteristics of the oxide, and turns out into spectral–luminescent properties of light-emitting materials obtained on its basis using the sol–gel technology [ 70 ]. The presence of metallic aluminum in the PAF volume is confirmed by the studies of other authors [ 32 , 71 , 72 ].…”

Section: Resultsmentioning

confidence: 99%

Porous Alumina Films Fabricated by Reduced Temperature Sulfuric Acid Anodizing: Morphology, Composition and Volumetric Growth

et al. 2021

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The volumetric growth, composition, and morphology of porous alumina films fabricated by reduced temperature 280 K galvanostatic anodizing of aluminum foil in 0.4, 1.0, and 2.0 M aqueous sulfuric acid with 0.5–10 mA·cm−2 current densities were investigated. It appeared that an increase in the solution concentration from 0.4 to 2 M has no significant effect on the anodizing rate, but leads to an increase in the porous alumina film growth. The volumetric growth coefficient increases from 1.26 to 1.67 with increasing current density from 0.5 to 10 mA·cm−2 and decreases with increasing solution concentration from 0.4 to 2.0 M. In addition, in the anodized samples, metallic aluminum phases are identified, and a tendency towards a decrease in the aluminum content with an increase in solution concentration is observed. Anodizing at 0.5 mA·cm−2 in 2.0 M sulfuric acid leads to formation of a non-typical nanostructured porous alumina film, consisting of ordered hemispheres containing radially diverging pores.

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Section: Resultsmentioning

confidence: 99%

Porous Alumina Films Fabricated by Reduced Temperature Sulfuric Acid Anodizing: Morphology, Composition and Volumetric Growth

et al. 2021

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“…One of the reason of the observed dependence, which is reproducible and reversible for the wet and dried samples of xerogel/opal, is supposed to be influenced by light scattering on lanthanides excitations in mesoscopic structures. The observed modification of Er photoluminescence excitation spectrum (PLE) for the emission wavelength 1.54 µm manifested by appearance of a strong band at 360 nm for the structure opal/titania xerogel [75,76], results from favourable interaction between silica and titania [77]. The strong PLE band in ultraviolet range obtained for the TiO 2 /SiO 2 composites makes, from our point of view, these materials attractive for the development of light transformers for the rapidly extended market of short-wavelength optoelectronic devices on the basis of the group III nitrates [78,79].…”

Section: Artificial Opalsmentioning

confidence: 99%

“…Sol-gel synthesis of xerogels doped with lanthanides inside partial volume of interglobule spacing results in achievement of 3D photonic crystals doped with the lanthanides remaining with unfilled the residual part of volume [71]. Excitation of lanthanides in the structures based on artificial opals had been studied and modification of Eu [72], Tb [73,74], and Er [75,76] luminescence characteristics was reported. Our recent experiments reveal strong dependence of Er and Eu PL intensity on refractive index of liquids inside the voids of the samples of artificial opal/titania xerogel, doped with erbium or europium (Fig.…”

Section: Artificial Opalsmentioning

confidence: 99%