17 research outputs found
Modeling of optical properties of hybrid metal-organic nanostructures
To model spectral characteristics of hybrid metal-organic nanostructures, the extended Mie theory was used, which makes it possible to calculate the extinction efficiency factor (Qext)Β and the scattering efficiency factor in the near zone (QNF) of two-layer spherical particles placed in an absorbing matrix. Two-layer plasmon nanospheres consisting of a metallic core (Ag, Cu) coated with dielectric shells and located into the copper phthalocyanine (CuPc) matrix were considered. The influence of dielectric shell thickness and refractive index on the characteristics of the surface plasmon resonance of absorption (SPRA) was studied. The possibility of the SPRA band tuning by changing the optical and geometrical parameters of dielectric shells was shown. It was established that dielectric shells allow to shift the surface plasmon resonance band of plasmonic Β nanoparticles absorption both Β to Β short- Β and Β long-wavelength Β spectral Β range Β depending on the relation between shell and matrix refractive indexes.To model spectral characteristics of hybrid metal-organic nanostructures, the extended Mie theory was used, which makes it possible to calculate the extinction efficiency factor (Qext)Β and the scattering efficiency factor in the near zone (QNF)Β ofΒ two-layerΒ sphericalΒ particlesΒ placedΒ inΒ anΒ absorbingΒ matrix.Β Two-layer plasmon nanospheres consisting of a metallic core (Ag, Cu) coated with dielectric shells and located into the copper phthalocyanine (CuPc) matrix were considered. The influence of dielectric shell thickness and refractive index on the characteristics of the surface plasmon resonance of absorption (SPRA) was studied. The possibility of the SPRA band tuning by changing the optical and geometrical parameters of dielectric shells was shown. It was established that dielectric shells allow to shift the surface plasmon resonance band of plasmonic Β nanoparticles absorption both Β to Β short- Β and Β long-wavelength Β spectral Β range Β depending on the relation between shell and matrix refractive indexes
Modeling of optical properties of hybrid metal-organic nanostructures
To model spectral characteristics of hybrid metal-organic nanostructures, the extended Mie theory was used, which makes it possible to calculate the extinction efficiency factor (Qext) and the scattering efficiency factor in the near zone (QNF) of two-layer spherical particles placed in an absorbing matrix. Two-layer plasmon nanospheres consisting of a metallic core (Ag, Cu) coated with dielectric shells and located into the copper phthalocyanine (CuPc) matrix were considered. The influence of dielectric shell thickness and refractive index on the characteristics of the surface plasmon resonance of absorption (SPRA) was studied. The possibility of the SPRA band tuning by changing the optical and geometrical parameters of dielectric shells was shown. It was established that dielectric shells allow to shift the surface plasmon resonance band of plasmonic nanoparticles absorption both to short- and long-wavelength spectral range depending on the relation between shell and matrix refractive indexes
ΠΠΠΠΠΠΠΠΠ«Π Π ΠΠΠΠΠΠΠ‘ Π ΠΠΠΠΠΠ ΠΠ«Π₯ Π‘ΠΠΠΠ‘Π’Π«Π₯ ΠΠΠΠΠ‘Π’Π Π£ΠΠ’Π£Π ΠΠ₯ Π‘ΠΠ ΠΠΠ Π-Π€Π’ΠΠΠΠ¦ΠΠΠΠΠ ΠΠΠΠΠΠ―1
Spectral properties of nickel phthalocyanine (NiPc) and silver (Ag) thin films, as well as of planar hybrid nanostructures composed of organic semiconductor nanometer films contacting with silver island structures were studied. All nanostructures were fabricated by thermal vacuum evaporation on glass and quartz substrates (S). Two configurations of planar hybrid nanostructures were investigated, in which the silver nanoparticle monolayer was placed under the NiPc film (S/Ag/NiPc) and over the NiPc film (S/NiPc/Ag). The NiPc film thickness was changed from 10 to 30 nm. The silver surface density was about 2β
10-6 g/cm2. The surface structure of films was studied with the use of a scanning probe microscope βSolver P47 - PROβ in the semi-contact regime. Optical spectra were recorded by a spectrophotomer βCary 500β. The most significant increasein the organic film absorption in a presence of Ag nanoparticles was observed for the NiPc film thickness of 10 nm over the spectral range of electronic absorption bands Ξ» ~ 600β700 nm. The effect is due to the local field strengthening near the plasmonic nanoparticles surface for distances compared with nanoparticle sizes. Quantitative regards showed that for the nanostructures of S/Ag/NiPc and S/NiPc/Ag the existence of Ag nanoparticles leads to an increase in the optical density at the wavelength Ξ» = 625 nm at 25 and 33 %, respectively. We suppose that the dependence of the NiPc film effective absorption on the hybrid nanostructure configuration may be related to the features of the nanostructure formation in the process of thermal evaporation.ΠΠ·ΡΡΠ΅Π½Ρ ΡΠΏΠ΅ΠΊΡΡΠ°Π»ΡΠ½ΡΠ΅ ΡΠ²ΠΎΠΉΡΡΠ²Π° ΡΠΎΠ½ΠΊΠΈΡ
ΠΏΠ»Π΅Π½ΠΎΠΊ ΡΡΠ°Π»ΠΎΡΠΈΠ°Π½ΠΈΠ½Π° Π½ΠΈΠΊΠ΅Π»Ρ (NiPc) ΠΈ ΡΠ΅ΡΠ΅Π±ΡΠ° (Ag), ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΡ
ΡΠ΅ΡΠΌΠΈΡΠ΅ΡΠΊΠΈΠΌ ΠΎΡΠ°ΠΆΠ΄Π΅Π½ΠΈΠ΅ΠΌ Π² Π²Π°ΠΊΡΡΠΌΠ΅ Π½Π° ΡΡΠ΅ΠΊΠ»ΡΠ½Π½ΡΠ΅ ΠΈ ΠΊΠ²Π°ΡΡΠ΅Π²ΡΠ΅ ΠΏΠΎΠ΄Π»ΠΎΠΆΠΊΠΈ (Π), Π° ΡΠ°ΠΊΠΆΠ΅ ΠΏΠ»Π°Π½Π°ΡΠ½ΡΡ
Π³ΠΈΠ±ΡΠΈΠ΄Π½ΡΡ
Π½Π°Π½ΠΎΡΡΡΡΠΊΡΡΡ, Π² ΠΊΠΎΡΠΎΡΡΡ
Π½Π°Π½ΠΎΠΌΠ΅ΡΡΠΎΠ²ΡΠ΅ ΠΏΠ»Π΅Π½ΠΊΠΈ ΠΎΡΠ³Π°Π½ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΏΠΎΠ»ΡΠΏΡΠΎΠ²ΠΎΠ΄Π½ΠΈΠΊΠ° ΠΊΠΎΠ½ΡΠ°ΠΊΡΠΈΡΡΡΡ Ρ ΠΎΡΡΡΠΎΠ²ΠΊΠΎΠ²ΡΠΌΠΈ ΡΡΡΡΠΊΡΡΡΠ°ΠΌΠΈ ΡΠ΅ΡΠ΅Π±ΡΠ°. ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Ρ Π΄Π²Π΅ ΠΊΠΎΠ½ΡΠΈΠ³ΡΡΠ°ΡΠΈΠΈ ΠΏΠ»Π°Π½Π°ΡΠ½ΡΡ
Π³ΠΈΠ±ΡΠΈΠ΄Π½ΡΡ
Π½Π°Π½ΠΎΡΡΡΡΠΊΡΡΡ β ΠΌΠΎΠ½ΠΎΡΠ»ΠΎΠΉ Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡ ΡΠ΅ΡΠ΅Π±ΡΠ° ΠΏΠΎΠ΄ ΠΏΠ»Π΅Π½ΠΊΠΎΠΉ ΡΡΠ°Π»ΠΎΡΠΈΠ°Π½ΠΈΠ½Π° Π½ΠΈΠΊΠ΅Π»Ρ (Π/Ag/NiPc) ΠΈ ΠΌΠΎΠ½ΠΎΡΠ»ΠΎΠΉ Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡ ΡΠ΅ΡΠ΅Π±ΡΠ° Π½Π°Π΄ ΠΏΠ»Π΅Π½ΠΊΠΎΠΉ ΡΡΠ°Π»ΠΎΡΠΈΠ°Π½ΠΈΠ½Π° Π½ΠΈΠΊΠ΅Π»Ρ(Π/NiPc/Ag). Π’ΠΎΠ»ΡΠΈΠ½Π° ΠΏΠ»Π΅Π½ΠΎΠΊ NiPc ΠΈΠ·ΠΌΠ΅Π½ΡΠ»Π°ΡΡ ΠΎΡ 10 Π΄ΠΎ 30 Π½ΠΌ. ΠΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠ½Π°Ρ ΠΏΠ»ΠΎΡΠ½ΠΎΡΡΡ ΠΌΠ΅ΡΠ°Π»Π»Π° ΡΠΎΡΡΠ°Π²Π»ΡΠ»Π° ~ 2β
10β6 Π³/ΡΠΌ2.. Π‘ ΠΏΠΎΠΌΠΎΡΡΡ ΡΠΊΠ°Π½ΠΈΡΡΡΡΠ΅Π³ΠΎ Π·ΠΎΠ½Π΄ΠΎΠ²ΠΎΠ³ΠΎ ΠΌΠΈΠΊΡΠΎΡΠΊΠΎΠΏΠ° Solver P47-PRO Π² ΠΏΠΎΠ»ΡΠΊΠΎΠ½ΡΠ°ΠΊΡΠ½ΠΎΠΌ ΡΠ΅ΠΆΠΈΠΌΠ΅ ΠΈΠ·ΡΡΠ΅Π½Π° ΡΡΡΡΠΊΡΡΡΠ° ΠΈΡΡΠ»Π΅Π΄ΡΠ΅ΠΌΡΡ
Π½Π°Π½ΠΎΡΡΡΡΠΊΡΡΡ. ΠΠΏΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΠΏΠ΅ΠΊΡΡΡ Π·Π°ΠΏΠΈΡΡΠ²Π°Π»ΠΈΡΡ Π½Π° ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΎΡΠΎΠΌΠ΅ΡΡΠ΅ Cary 500. Π£ΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ, ΡΡΠΎ ΠΏΡΠΈΡΡΡΡΡΠ²ΠΈΠ΅ Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡ Ag Π½Π°ΠΈΠ±ΠΎΠ»Π΅Π΅ Π·Π½Π°ΡΠΈΡΠ΅Π»ΡΠ½ΠΎ ΡΡΠΈΠ»ΠΈΠ²Π°Π΅Ρ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΠ΅ ΠΏΠΎΠ³Π»ΠΎΡΠ΅Π½ΠΈΠ΅ ΠΏΠ»Π΅Π½ΠΊΠΈ NiPc ΡΠΎΠ»ΡΠΈΠ½ΠΎΠΉ ~ 10 Π½ΠΌ Π² ΠΎΠ±Π»Π°ΡΡΠΈ ΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΡΡ
ΠΏΠΎΠ»ΠΎΡ ΠΏΠΎΠ³Π»ΠΎΡΠ΅Π½ΠΈΡ Ξ» ~ 600β700 Π½ΠΌ. ΠΠ°Π½Π½ΡΠΉ ΡΡΡΠ΅ΠΊΡ ΠΏΡΠΎΡΠ²Π»ΡΠ΅ΡΡΡ Π·Π° ΡΡΠ΅Ρ ΡΠΏΠΎΡΠΎΠ±Π½ΠΎΡΡΠΈ ΠΏΠ»Π°Π·ΠΌΠΎΠ½Π½ΡΡ
Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡ ΡΡΠΈΠ»ΠΈΠ²Π°ΡΡ Π»ΠΎΠΊΠ°Π»ΡΠ½ΠΎΠ΅ ΠΏΠΎΠ»Π΅ Π²Π±Π»ΠΈΠ·ΠΈ ΡΠ²ΠΎΠ΅ΠΉ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ Π½Π° ΡΠ°ΡΡΡΠΎΡΠ½ΠΈΡΡ
, ΡΡΠ°Π²Π½ΠΈΠΌΡΡ
Ρ ΡΠ°Π·ΠΌΠ΅ΡΠ°ΠΌΠΈ Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡ. ΠΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π΅Π½Π½ΡΠ΅ ΠΎΡΠ΅Π½ΠΊΠΈ ΠΏΠΎΠΊΠ°Π·Π°Π»ΠΈ, ΡΡΠΎ Π½Π°Π»ΠΈΡΠΈΠ΅ Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡ Ag ΠΏΡΠΈΠ²ΠΎΠ΄ΠΈΡ ΠΊ ΡΠ²Π΅Π»ΠΈΡΠ΅Π½ΠΈΡ ΠΎΠΏΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΏΠ»ΠΎΡΠ½ΠΎΡΡΠΈ Π½Π° Π΄Π»ΠΈΠ½Π΅ Π²ΠΎΠ»Π½Ρ Ξ» = 625 Π½ΠΌ Π΄Π»Ρ Π½Π°Π½ΠΎΡΡΡΡΠΊΡΡΡ Π/Ag/NiPc ΠΈ Π/NiPc/Ag ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²Π΅Π½Π½ΠΎ Π½Π° 25ΠΈ 33 %. ΠΡΠ΅Π΄ΠΏΠΎΠ»Π°Π³Π°Π΅ΡΡΡ, ΡΡΠΎ Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΡ Π²Π΅Π»ΠΈΡΠΈΠ½Ρ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΠ³ΠΎ ΠΏΠΎΠ³Π»ΠΎΡΠ΅Π½ΠΈΡ ΠΏΠ»Π΅Π½ΠΊΠΈ NiPc ΠΎΡ ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΠΈ Π³ΠΈΠ±ΡΠΈΠ΄Π½ΠΎΠΉ ΡΠΈΡΡΠ΅ΠΌΡ ΠΌΠΎΠΆΠ΅Ρ Π±ΡΡΡ ΡΠ²ΡΠ·Π°Π½Π° Ρ ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΡΠΌΠΈ ΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½ΠΈΡ Π½Π°Π½ΠΎΡΡΡΡΠΊΡΡΡ Π² ΠΏΡΠΎΡΠ΅ΡΡΠ΅ ΡΠ΅ΡΠΌΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΎΡΠ°ΠΆΠ΄Π΅Π½ΠΈΡ
ΠΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΠΎΠ½Π½Π°Ρ Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΡ ΠΏΠΎΠ»ΠΎΡΡ ΠΏΠ»Π°Π·ΠΌΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΏΠΎΠ²Π΅ΡΡ Π½ΠΎΡΡΠ½ΠΎΠ³ΠΎ ΡΠ΅Π·ΠΎΠ½Π°Π½ΡΠ° ΠΏΠΎΠ³Π»ΠΎΡΠ΅Π½ΠΈΡ Π½Π°Π½ΠΎΡΡΡΡΠΊΡΡΡ Π·ΠΎΠ»ΠΎΡΠ° Π² ΡΠ³Π»Π΅ΡΠΎΠ΄ΡΠΎΠ΄Π΅ΡΠΆΠ°ΡΠΈΡ ΠΌΠ°ΡΡΠΈΡΠ°Ρ
For fullerene matrixes doped by gold nanoparticles we have established experimentally a miss of a red concentration-induced shift of surface plasmon resonance absorption band maximum. Theoretical modeling has been made for spectral characteristics of carbonβbearing nanostructures. Numerical calculations of extinction factors for a spherical metallic particle in an absorbing surrounding medium were based on the Mie theory. Transmission spectra coefficients of densely packed plasmonic nanoparticles monolayers were calculated with the use of the single coherent scattering approximation modified for absorbing matrices. Thin-film Au-air and AuβC60 nanostructures have been fabricated on glass and quartz substrates by thermal evaporation and condensation in vacuum at an air pressure of 2 Β· 10β3 PΠ°. The surface mass density of Au into AuβC60 nanostructures was varied in the range (3.86β7.98) Β· 10β6 g/cm2. The comparison of theoretical and experimental data allowed making a conclusion that the absorbency in carbon-bearing matrix leads to the attenuation of lateral electrodynamics coupling and blocks collective plasmon resonance in densely packed gold nanostructures.ΠΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΠΎ ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ, ΡΡΠΎ Π΄Π»Ρ Π½Π°Π½ΠΎΡΡΡΡΠΊΡΡΡ AuβΠ‘60 Π½Π°Π±Π»ΡΠ΄Π°Π΅ΡΡΡ ΠΏΠΎΠ΄Π°Π²Π»Π΅Π½ΠΈΠ΅ Π΄Π»ΠΈΠ½Π½ΠΎΠ²ΠΎΠ»Π½ΠΎΠ²ΠΎΠ³ΠΎ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΡΠ΄Π²ΠΈΠ³Π° ΠΌΠ°ΠΊΡΠΈΠΌΡΠΌΠ° ΠΏΠΎΠ»ΠΎΡΡ ΠΏΠ»Π°Π·ΠΌΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠ½ΠΎΠ³ΠΎ ΡΠ΅Π·ΠΎΠ½Π°Π½ΡΠ° ΠΏΠΎΠ³Π»ΠΎΡΠ΅Π½ΠΈΡ. ΠΡΠΎΠ²Π΅Π΄Π΅Π½ΠΎ ΡΠ΅ΠΎΡΠ΅ΡΠΈΡΠ΅ΡΠΊΠΎΠ΅ ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ ΡΠΏΠ΅ΠΊΡΡΠ°Π»ΡΠ½ΡΡ
Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ ΡΠ³Π»Π΅ΡΠΎΠ΄ΡΠΎΠ΄Π΅ΡΠΆΠ°ΡΠΈΡ
Π½Π°Π½ΠΎΡΡΡΡΠΊΡΡΡ. Π Π°ΡΡΠ΅ΡΡ ΡΠΊΡΡΠΈΠ½ΠΊΡΠΈΠΈ Π΄Π»Ρ ΠΎΠ΄Π½ΠΎΠΉ ΠΌΠ΅ΡΠ°Π»Π»ΠΈΡΠ΅ΡΠΊΠΎΠΉ Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡΡ ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈΡΡ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΡΠ΅ΠΎΡΠΈΠΈ ΠΠΈ Π΄Π»Ρ ΠΏΠΎΠ³Π»ΠΎΡΠ°ΡΡΠΈΡ
ΠΌΠ°ΡΡΠΈΡ. ΠΠΎΡΡΡΠΈΡΠΈΠ΅Π½Ρ ΠΊΠΎΠ³Π΅ΡΠ΅Π½ΡΠ½ΠΎΠ³ΠΎ ΠΏΡΠΎΠΏΡΡΠΊΠ°Π½ΠΈΡ ΠΏΠ»ΠΎΡΠ½ΠΎΡΠΏΠ°ΠΊΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΠΌΠΎΠ½ΠΎΡΠ»ΠΎΡ ΠΏΠ»Π°Π·ΠΌΠΎΠ½Π½ΡΡ
Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡ Π²ΡΡΠΈΡΠ»ΡΠ»ΡΡ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΠΌΠΎΠ΄ΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ Π΄Π»Ρ ΠΏΠΎΠ³Π»ΠΎΡΠ°ΡΡΠΈΡ
ΠΌΠ°ΡΡΠΈΡ ΠΏΡΠΈΠ±Π»ΠΈΠΆΠ΅Π½ΠΈΡ ΠΎΠ΄Π½ΠΎΠΊΡΠ°ΡΠ½ΠΎΠ³ΠΎ ΠΊΠΎΠ³Π΅ΡΠ΅Π½ΡΠ½ΠΎΠ³ΠΎ ΡΠ°ΡΡΠ΅ΡΠ½ΠΈΡ. Π’ΠΎΠ½ΠΊΠΎΠΏΠ»Π΅Π½ΠΎΡΠ½ΡΠ΅ Π½Π°Π½ΠΎΡΡΡΡΠΊΡΡΡΡ Au ΠΈ AuβC60 Π½Π° ΠΏΠΎΠ΄Π»ΠΎΠΆΠΊΠ°Ρ
ΠΈΠ· ΡΡΠ΅ΠΊΠ»Π° ΠΈ ΠΊΠ²Π°ΡΡΠ° ΠΏΠΎΠ»ΡΡΠ°Π»ΠΈ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΡΠ΅ΡΠΌΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΈΡΠΏΠ°ΡΠ΅Π½ΠΈΡ ΠΈ ΠΊΠΎΠ½Π΄Π΅Π½ΡΠ°ΡΠΈΠΈ Π² Π²Π°ΠΊΡΡΠΌΠ΅ ΠΏΡΠΈ ΠΎΡΡΠ°ΡΠΎΡΠ½ΠΎΠΌ Π΄Π°Π²Π»Π΅Π½ΠΈΠΈ Π²ΠΎΠ·Π΄ΡΡ
Π° 2Β·10β3 ΠΠ°. ΠΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠ½Π°Ρ ΠΏΠ»ΠΎΡΠ½ΠΎΡΡΡ Au Π² Π½Π°Π½ΠΎΡΡΡΡΠΊΡΡΡΠ°Ρ
AuβC60 ΠΈΠ·ΠΌΠ΅Π½ΡΠ»Π°ΡΡ Π² ΠΏΡΠ΅Π΄Π΅Π»Π°Ρ
(3,86β7,98)Β·10β6 Π³Β·ΡΠΌβ2 . ΠΠ° ΠΎΡΠ½ΠΎΠ²Π΅ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ ΡΠ΅ΠΎΡΠ΅ΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΈ ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΡΡ
ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠΎΠ² ΡΠ΄Π΅Π»Π°Π½ Π²ΡΠ²ΠΎΠ΄ ΠΎΠ± ΠΎΡΠ»Π°Π±Π»Π΅Π½ΠΈΠΈ ΠΊΠΎΠ»Π»Π΅ΠΊΡΠΈΠ²Π½ΡΡ
Π»Π°ΡΠ΅ΡΠ°Π»ΡΠ½ΡΡ
ΡΠ»Π΅ΠΊΡΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΡΠ΅ΡΠΊΠΈΡ
Π²Π·Π°ΠΈΠΌΠΎΠ΄Π΅ΠΉΡΡΠ²ΠΈΠΉ ΠΌΠ΅ΠΆΠ΄Ρ Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡΠ°ΠΌΠΈ Π·ΠΎΠ»ΠΎΡΠ° Π² ΡΡΠ»Π»Π΅ΡΠ΅Π½ΠΎΠ²ΠΎΠΉ ΠΌΠ°ΡΡΠΈΡΠ΅ Π‘60, Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΠ·ΡΡΡΠ΅ΠΉΡΡ Π½Π°Π»ΠΈΡΠΈΠ΅ΠΌ ΠΏΠΎΠ³Π»ΠΎΡΠ΅Π½ΠΈΡ
Π‘ΠΠΠΠ’Π ΠΠΠ¬ΠΠ-ΠΠ ΠΠΠΠΠΠΠ― ΠΠΠΠΠΠΠΠ ΠΠΠ‘Π’ΠΠ¦ΠΠΠΠΠ ΠΠΠΠ ΠΠΠΠΠΠ©ΠΠΠΠ― ΠΠΠΠΠΠ‘ΠΠΠΠΠ«Π₯ ΠΠΠ ΠΠΠΠΠ§ΠΠ‘ΠΠΠ₯ ΠΠΠΠΠΠΠΠΠ«Π₯ ΠΠΠΠΠ‘Π’Π Π£ΠΠ’Π£Π
The features of the induced changes in the optical density spectra of multilayer Ag-Na3 AlF6 nanostructures under a femtosecond laser pulses exitation in the band of surface plasmonic resonance of absorption (SPRA) were studied. The dependence of the amplitude of the induced changes on the thickness of the dielectric Na3 AlF6 films separating the monolayeres of silver nanoparticles was registered. A significant increase of the optical response amplitude (up to 80 %) was found for the nanostructures with the quarter-wavelength Na3 AlF6 interlayers. For nanostructures with different-thickness dielectric Na3 AlF6 interlayers the characteristic relaxation times of induced changes at an excitation energy of 5β10 ΞΌJ do not practically vary, are equal to ~2 ps and coincide with the kinetic response time parameters of the used silver nanoparticle monolayers.Β ΠΠ·ΡΡΠ΅Π½Ρ ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠΈ Π½Π°Π²Π΅Π΄Π΅Π½Π½ΡΡ
ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΠΉ Π² ΡΠΏΠ΅ΠΊΡΡΠ°Ρ
ΠΎΠΏΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΏΠ»ΠΎΡΠ½ΠΎΡΡΠΈ ΠΌΠ½ΠΎΠ³ΠΎΡΠ»ΠΎΠΉΠ½ΡΡ
Π½Π°Π½ΠΎΡΡΡΡΠΊΡΡΡ Ag-Na3 AlF6 ΠΏΡΠΈ ΠΈΡ
Π²ΠΎΠ·Π±ΡΠΆΠ΄Π΅Π½ΠΈΠΈ ΡΠ΅ΠΌΡΠΎΡΠ΅ΠΊΡΠ½Π΄Π½ΡΠΌΠΈ Π»Π°Π·Π΅ΡΠ½ΡΠΌΠΈ ΠΈΠΌΠΏΡΠ»ΡΡΠ°ΠΌΠΈ Π² ΠΏΠΎΠ»ΠΎΡΠ΅ ΠΏΠ»Π°Π·ΠΌΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠ½ΠΎΠ³ΠΎ ΡΠ΅Π·ΠΎΠ½Π°Π½ΡΠ° ΠΏΠΎΠ³Π»ΠΎΡΠ΅Π½ΠΈΡ (ΠΠΠ Π). ΠΠ°ΡΠ΅Π³ΠΈΡΡΡΠΈΡΠΎΠ²Π°Π½Π° Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΡ Π°ΠΌΠΏΠ»ΠΈΡΡΠ΄Ρ Π½Π°Π²Π΅Π΄Π΅Π½Π½ΡΡ
ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΠΉ Π² ΠΎΠ±Π»Π°ΡΡΠΈ ΠΠΠ Π ΠΎΡ ΡΠΎΠ»ΡΠΈΠ½Ρ Π΄ΠΈΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΠ»Π΅Π½ΠΎΠΊ Na3 AlF6 , ΡΠ°Π·Π΄Π΅Π»ΡΡΡΠΈΡ
ΠΌΠΎΠ½ΠΎΡΠ»ΠΎΠΈ Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡ ΡΠ΅ΡΠ΅Π±ΡΠ°. ΠΠ±Π½Π°ΡΡΠΆΠ΅Π½ΠΎ ΡΡΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎΠ΅ ΡΠ²Π΅Π»ΠΈΡΠ΅Π½ΠΈΠ΅ Π°ΠΌΠΏΠ»ΠΈΡΡΠ΄Ρ ΠΎΠΏΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΎΡΠΊΠ»ΠΈΠΊΠ° (Π΄ΠΎ 80 %) Π΄Π»Ρ Π½Π°Π½ΠΎΡΡΡΡΠΊΡΡΡΡ Ρ ΡΠ΅ΡΠ²Π΅ΡΡΡΠ²ΠΎΠ»Π½ΠΎΠ²ΡΠΌΠΈ ΠΏΡΠΎΡΠ»ΠΎΠΉΠΊΠ°ΠΌΠΈ Na3 AlF6 . Π₯Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ Π²ΡΠ΅ΠΌΠ΅Π½Π° ΡΠ΅Π»Π°ΠΊΡΠ°ΡΠΈΠΈ Π½Π°Π²ΠΎΠ΄ΠΈΠΌΡΡ
ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΠΉ ΠΏΡΠΈ ΡΠ½Π΅ΡΠ³ΠΈΡΡ
Π²ΠΎΠ·Π±ΡΠΆΠ΄Π΅Π½ΠΈΡ 5β10 ΠΌΠΊΠΠΆ Π΄Π»Ρ Π½Π°Π½ΠΎΡΡΡΡΠΊΡΡΡ Ρ ΡΠ°Π·Π»ΠΈΡΠ½ΠΎΠΉ ΡΠΎΠ»ΡΠΈΠ½ΠΎΠΉ Π΄ΠΈΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΡΠΎΡΠ»ΠΎΠ΅ΠΊ Na3 AlF6 ΠΏΡΠ°ΠΊΡΠΈΡΠ΅ΡΠΊΠΈ Π½Π΅ ΠΈΠ·ΠΌΠ΅Π½ΡΡΡΡΡ, ΡΠΎΡΡΠ°Π²Π»ΡΡΡ ~2 ΠΏΡ ΠΈ ΡΠΎΠ²ΠΏΠ°Π΄Π°ΡΡ Ρ Π²ΡΠ΅ΠΌΠ΅Π½Π½ΡΠΌΠΈ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠ°ΠΌΠΈ ΠΊΠΈΠ½Π΅ΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΎΡΠΊΠ»ΠΈΠΊΠ°, Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠ½ΡΠΌΠΈ Π΄Π»Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΡΠ΅ΠΌΠΎΠ³ΠΎ ΠΌΠΎΠ½ΠΎΡΠ»ΠΎΡ Π½Π°Π½ΠΎΡΠ°ΡΡΠΈΡ Ag.