Luminescent properties of synthetic opal

Грузинцев, А. Н.; Емельченко, Г. А.; Масалов, В. М.; Romanelli, Michael M.; Barthou, Carlos; Bénalloul, P.; Maître, Agnès

doi:10.1134/s0020168508020143

Cited by 17 publications

(19 citation statements)

References 8 publications

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“…The luminescence response occurs in a broad spectrum 450-700 nm and demonstrates quite surprising longtime decay at the low-temperature conditions [14]. The spectrum shape depends on the observation angle and the presence of a photonic bandgap was found to occur [15][16][17].…”

Section: Methodsmentioning

confidence: 95%

Luminescence response of synthetic opal under femtosecond laser pumping

Vasnetsov

Bazhenov

Dmitruk

et al. 2015

Journal of Luminescence

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Section: Methodsmentioning

confidence: 95%

Luminescence response of synthetic opal under femtosecond laser pumping

Vasnetsov

Bazhenov

Dmitruk

et al. 2015

Journal of Luminescence

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“…1 shows spectra corresponding to specular reflection for non polarized light at different incidence angles. In [10], it was shown that the wavelength λ max in Eq. (1) corresponds to the minimum of the intrinsic luminescence intensity or to the maximum of the reflection for the opal.…”

Section: Opal Characterizationmentioning

confidence: 98%

Manipulating emission of CdTeSe quantum dots embedded in synthetic opals

Vion¹,

Barthou²,

Bénalloul³

et al. 2010

Phys. Status Solidi (c)

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Photonic crystals (PCs) are the object of great interest due to the possibility, for appropriate PCs, to modify and control light propagation and even to influence the emission properties of an emitter, such as its emission diagram and its life time. One of the most common approaches to prepare 3D PCs takes advantage of the spontaneous self‐organisation of spherical colloidal particles. Large opals have been prepared by the sedimentation method and the size of the balls has been adjusted so that the pseudo‐band gap of those PCs lies in the same region than the emission band of CdSe/ZnS nanocrystals. Diagrams of radiation and the modification of the spontaneous life time of the embedded nanocrystals will be presented and discussed. It is found that, for the opal‐CdSe/ZnS nanocomposites, the emission intensity decreases and the luminescence decay time increases in the spatial directions, in which the spectral positions of the photonic band gap and the luminescence peak of the quantum dots coincide (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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“…The fact of the matter is that the material of nanospheres will emit predomi nantly into existing bound optical modes with a high quality factor, which can be easily registered in lumi nescence spectra excited by various mechanisms. Opal silica spheres almost always possess intrinsic lumines cence in the visible spectral range, which is related to both impurity and structural point defects of the mate rial [8,9]. Different metals and OH groups, which are contained in spheres, can act as impurity lumines cence centers.…”

Section: Introductionmentioning

confidence: 99%

“…Different metals and OH groups, which are contained in spheres, can act as impurity lumines cence centers. It has been revealed that the intensity of the visible luminescence of opal is anisotropic, with the anisotropy corresponding to the frequency disper sion and angular dispersion of photonic stop bands of the opal matrix [8]. In addition, it has been shown that bound modes of opal spheres yield additional peaks in photoluminescence spectra and can be visualized in an optical microscope by applying a matted sapphire plate to the opal surface [9].…”

Section: Introductionmentioning

confidence: 99%

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Emission of bound optical modes of photonic glasses from silica spheres

Грузинцев

2014

Opt. Spectrosc.

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The effect of bound optical modes of photonic glasses from silica spheres on their luminescence in the visible range of the spectrum is investigated. It is shown that local photonic states give rise to a fine structure in luminescence spectra, positions of the maxima of which depend on the diameters of SiO 2 nano spheres. A theoretical model of the calculation of characteristic wavelengths of bound modes and values of the Purcell factor for the amplification of spontaneous luminescence into these modes is proposed. It is revealed that the experimental data agree well with theoretical results for the intrinsic luminescence of pho tonic glasses with different diameters of silica spheres.

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Luminescent properties of synthetic opal

Cited by 17 publications

References 8 publications

Luminescence response of synthetic opal under femtosecond laser pumping

Luminescence response of synthetic opal under femtosecond laser pumping

Manipulating emission of CdTeSe quantum dots embedded in synthetic opals

Emission of bound optical modes of photonic glasses from silica spheres

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