Structure and optical properties of Cu O- and Cu Se-doped sol–gel silica glasses

Гурин, В. С.; Alexeenko, A. A.; Yumashev, K. V.; Prokoshin, P. V.; Zolotovskaya, Svetlana; Жавнерко, Г. К.

doi:10.1016/j.msec.2003.09.073

Cited by 30 publications

(12 citation statements)

References 8 publications

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“…Composite Me/SiO 2 samples (where Me is Ag, Au, and Cu) containing the noble metal NPs were produced using a modified sol-gel technique based on the hydrolysis of tetraethoxysilane (TEOS), with Audoping followed by a chemical transformation of the dopant precursors annealing in air [36][37][38][39][40][41][42]. A precursor sol was prepared by mixing TEOS, water, and ethyl alcohol with acid catalysts HNO 3 , HCl, or H 2 SO 4 .…”

Section: Synthesis and Structural Characterization Of Noble Metal Npsmentioning

confidence: 99%

Thermo-Optical Effects in Plasmonic Metal Nanostructures

Yeshchenko

Pinchuk

2021

Ukr. J. Phys.

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The effects of the temperature on the surface plasmon resonance (SPR) in noble metal nanoparticles at various temperatures ranging from 77 to 1190 K are reviewed. A temperature increase results in an appreciable red shift and leads to a broadening of the SPR in the nanoparticles (NPs). This observed thermal expansion along with an increase in the electron-phonon scattering rate with rising temperature emerge as the dominant physical mechanisms producing the red shift and broadening of the SPR. Strong temperature dependence of surface plasmon enhanced photoluminescence from silver (Ag) and copper (Cu) NPs is observed. The quantum photoluminescence yield of Ag nanoparticles decreases as the temperature increases, due to a decrease in the plasmon enhancement resulting from an increase in the electron-phonon scattering rate. An anomalous temperature dependence of the photoluminescence from Cu nanoparticles was also observed; the quantum yield of photoluminescence increases with the temperature. The interplay between the SPR and the interband transitions plays a critical role in this effect. The surface-plasmon involved laser heating of a dense 2D layer of gold (Au) NPs and of Au NPs in water colloids is also examined. A strong increase in the Au NP temperature occurs, when the laser frequency approaches the SPR. This finding supports the resonant plasmonic character of the laser heating of metal NPs. The sharp blue shift of the surface plasmon resonance in colloidal Au NPs at temperatures exceeding the water boiling point indicates the vapor-bubble formation near the surface of the NPs.

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Section: Synthesis and Structural Characterization Of Noble Metal Npsmentioning

confidence: 99%

Thermo-Optical Effects in Plasmonic Metal Nanostructures

Yeshchenko

Pinchuk

2021

Ukr. J. Phys.

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“…Technology of the growth of Cu nanoparticles in SiO 2 matrix is similar to described in Ref. [9]. Porous silica matrices (obtained by the transformation to monolithic glasses) were produced by the conventional sol-gel technique based on hydrolysis of tetraethoxysilane (TEOS).…”

Section: Nanoparticle Growth and Sample Preparation For Optical Measumentioning

confidence: 99%

Influence of annealing conditions on size and optical properties of copper nanoparticles embedded in silica matrix

Yeshchenko

Dmitruk

Dmytruk

et al. 2007

Materials Science and Engineering: B

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“…[5,20]. Porous silica matrices (xerogels) were produced by the conventional sol-gel technique based on hydrolysis of tetraethoxysilane (TEOS).…”

Section: Fabrication and Measurements Proceduresmentioning

confidence: 99%

Optical properties of sol–gel fabricated Mn/SiO2 nanocomposites: Observation of surface plasmon resonance in Mn nanoparticles

Yeshchenko

Dmitruk

Alexeenko

et al. 2008

Applied Surface Science

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Structure and optical properties of Cu O- and Cu Se-doped sol–gel silica glasses

Cited by 30 publications

References 8 publications

Thermo-Optical Effects in Plasmonic Metal Nanostructures

Thermo-Optical Effects in Plasmonic Metal Nanostructures

Influence of annealing conditions on size and optical properties of copper nanoparticles embedded in silica matrix

Optical properties of sol–gel fabricated Mn/SiO2 nanocomposites: Observation of surface plasmon resonance in Mn nanoparticles

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