Exciton energy transfer between adsorbates

Кучеренко, М. Г.; Chmereva, T. M.

doi:10.1134/s1063783408030232

Cited by 5 publications

(4 citation statements)

References 4 publications

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“…Near the phase dividing surface, the intermolecular transfer of the electron excitation energy may be achieved differently compared with the case of an iso lated DA pair, because an additional transfer channel of the excitation (excitons, plasmons, and other quasi particles of the solid phase system [24]) appears. When a DA pair is situated near the metal surface, it is necessary to take into account the plasma oscillations of the electron density in the medium as induced by the molecular dipoles.…”

Section: Introductionmentioning

confidence: 99%

Possibilities of improving the characteristics of the scanning near-field optical microscope due to the plasmon-resonance increase of the nonradiative energy transfer rate

Кучеренко¹,

Kislov²,

Chmereva³

2012

Nanotechnol Russia

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The problem of increasing the quality of the image created by a scanning near field optical micro scope with the Förster Resonance Energy Transfer (FRET) module is discussed. The possibility of improving the resolution of the near field optical microscope due to the FRET effect is analyzed, as is the formation of high quality images of nanoobjects on the basis of signals of increased intensity obtained by means of plas mon resonance in specially formed metal nanostructures (the plasmon resonance antennas). Research results for the nonradiative transfer of the electron exitation energy between the molecules placed near the planar surface of a conductor or a metal nanocylinder of the nanometer radius, as well as around a spherical nano particle, are presented. In the simplest model, the influence of the conducting phase boundary is taken into account by introducing an effective dipole image. If the antenna is a sphertical nanoparticle, then multipole polarization formalism is a more adequate representation of the responce.

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Section: Introductionmentioning

confidence: 99%

Possibilities of improving the characteristics of the scanning near-field optical microscope due to the plasmon-resonance increase of the nonradiative energy transfer rate

Кучеренко¹,

Kislov²,

Chmereva³

2012

Nanotechnol Russia

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“…The exciton energy transfer between adsorbates on the surface of a molecular crystal was considered in [5]. In the present work, energy transfer in the donor-acceptor pair located near the plane metal surface is investigated within the limits of the quasi-static approximation, since the energy transfer occurs at distances much smaller than the radiation wavelength.…”

Section: Introductionmentioning

confidence: 99%

Energy transfer between adsorbates by means of surface plasmons

Chmereva

Кучеренко

2011

Russ Phys J

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Nonradiative electron excitation energy transfer between the molecules adsorbed by the plane conducting surface is investigated. It is demonstrated that the mechanism with participation of surface plasmons can be efficient for energy transfer in such system. A dependence of the energy transfer rate in the donor-acceptor adsorbate pair on the distance and anisotropy parameters is established. The efficiencies of the direct dipoledipole and plasmon channels of energy transfer are compared. The dominating (exceeding by 1-2 orders of magnitude the energy transfer rate in a system without conducting bodies) contribution of the plasmon mechanism to the total energy transfer rate is detected when molecules are close to the metal surface.

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“…Some articles have studied the optical and structural characterization for CdTe using absorption and/or XRD spectroscopies but not Raman [12][13][14][15][16][17][18][19]. Meanwhile, there are limited references that are related to Raman spectroscopy of CdTe [20][21][22][23][24]. These references did not use the confinement model used in this work.…”

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confidence: 99%

“…This model has the advantage that it can be used for computing the fitting parameters, like peak width and grain radius, for analyzing the spectrum; in Ref. [23], the data was fitted to a Lorentzian profile and the spectrum in [24] was investigated by a different model described in Ref. [25], while did not use the fitting at all and because of this they could not estimate the peak width and grain size.…”

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confidence: 99%

Structural and optical properties of CdTe thin film: A detailed investigation using optical absorption, XRD, and Raman spectroscopies

Nassar

Yükselici

Bozkurt

2016

Physica Status Solidi (b)

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Physical vapor deposition (PVD) is used to grow CdTe thin films of different thicknesses on glass substrates. The characterization of the samples is then investigated optically and structurally. Three experimental techniques were used in this study; optical absorption (ABS), Raman, and X‐ray diffraction (XRD) spectroscopies. In optical ABS spectroscopy, the Urbach energy related to the width of long‐wavelength tail decreases from 827 to 585 meV as the thickness increases from 100 to 500 nm, respectively. The thickness‐dependent particle size was calculated using the value of the size‐dependent optical absorption edge energy. A shift of 710 meV in the ABS edge energy takes place as the thickness increases from 100 to 500 nm. Thickness‐dependent shifting and widening of XRD line is presumably due to the size effect and strain. Relative to the phonon frequency of bulk CdTe crystal, a thickness‐dependent blueshift was observed in Raman spectra for the Longitudinal Optical (LO) phonon frequency, while a redshift for the longitudinal acoustic (LA) and transverse optical (TO) phonon frequencies is observed. In the present work, the results of optical absorption, XRD, and Raman analyses are combined in order to study the effect of particle‐size evolution, thickness‐dependent strain, and structural disorder.

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Exciton energy transfer between adsorbates

Cited by 5 publications

References 4 publications

Possibilities of improving the characteristics of the scanning near-field optical microscope due to the plasmon-resonance increase of the nonradiative energy transfer rate

Possibilities of improving the characteristics of the scanning near-field optical microscope due to the plasmon-resonance increase of the nonradiative energy transfer rate

Energy transfer between adsorbates by means of surface plasmons

Structural and optical properties of CdTe thin film: A detailed investigation using optical absorption, XRD, and Raman spectroscopies

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