Ultrafast radiative decay of polaritons in an interface layer with strong excitonic response

Popov, V. V.; Bagaeva, T.Yu.; Teperik, T. V.; Horing, Norman J. M.; Ayaz, Yüksel

doi:10.1016/j.jlumin.2004.09.061

Journal of Luminescence

2005

DOI: 10.1016/j.jlumin.2004.09.061

|View full text |Cite

Ultrafast radiative decay of polaritons in an interface layer with strong excitonic response

V. V. Popov

T.Yu. Bagaeva

T. V. Teperik

et al.

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2005

2007

Publication Types

Select...

Article5

Relationship

Self Cite0

Independent5

Authors

Journals

Cited by 5 publications

(1 citation statement)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In particular, for PhE-PbI 4 these parameters are 220 meV, 0.5 per formula unit and 50 meV, respectively, with exciton energy meV that corresponds to the homogeneous broadening of exciton line in PhE-PbI 4 [4]. It is seen in Fig.1 that all absorption resonances show no frequency shift with variation of the angle of incidence of external light in the transmission regime tion of the L 0 , T 0 and Z polariton modes exhibit appreciable frequency shift in accordance with appreciable dispersion of these modes in the corresponding region of the polariton dispersion plane, which is between the two straight lines corresponding to the light dispersion in each surrounding medium [7]. …”

mentioning

confidence: 89%

Light absorption by polaritons in an interface layer with strong excitonic response: effects of retardation and total reflection

Popov

Bagaeva

Teperik

2005

phys. stat. sol. (c)

View full text Add to dashboard Cite

Light absorption spectra by interface layer with strong excitonic response in asymmetric dielectric environment are calculated for various angles of incidence of the external light. Appreciable frequency shift of the absorption resonances in the total reflection regime is found. It is shown that higher polarition modes may reveal themselves in absorption spectra of high-ordered excitonic layers with strong exciton-photon interaction. In this case, doublet and triplet structures of absorption spectra emerge for s-and p-polarized light, respectively.The properties of radiative (resonant) polaritons in a two-dimensional excitonic system have been studied theoretically in a number of papers (see, e.g., [1] and references therein). There were found to be three optically active exciton-polariton modes, called T, L and Z modes. These modes are distinguished by their electric field polarization. The T mode has s (or TE) polarization whereas L and Z modes have p (or TM) polarization. Radiative exciton-polaritons were experimentally observed in GaAs/AlGaAs quantum-well (QW) structures [2], CuCl films [3], and in slabs of organic-inorganic PbI-based layered perovskite-type semiconductors [4]. Appreciable renormalization of the polariton frequency under strong coupling between excitons and radiation field was predicted [1,5] and observed experimentally [3].In an earlier study [1] we analyzed theoretically the dispersion and radiative properties of polaritons in a layer with strong excitonic response in symmetric dielectric environment in the non-perturbative electromagnetic (EM) approach. Although the exciton-photon coupling was treated in [1] non-perturbatively, the response of excitonic layer was approximated by making use of the effective boundary conditions (EBCs). The EBCs satisfactorily describe excitonic layers in the long-wavelength approximation (LWA), when an excitonic layer is much thinner than the wavelength of photons in the excitonic-layer material. However, the LWA may be invalid even for geometrically thin layers in the frequency range close to the excitonic pole, in which the dielectric function dramatically increases if the damping of excitons is small enough and/or exciton oscillator strength is large. In this case, the retardation of EM field across the excitonic layer may become important and, hence, higher polariton modes may reveal themselves [3,5].Reflectivity spectra of excitonic layers in GaAs QW structures have been studied for oblique incidence of the external light [6]. Reflectivity spectra in the transmission regime exhibit peaks corresponding to radiative (resonant) exciton-polariton excitation, while in the attenuated total reflection (ATR) regime the spectra of the surface exciton-polaritons are revealed. However, the total reflection (TR) regime, when excitonic layer is located directly at the interface between the prism and substrate media, has not been addressed in earlier papers.

show abstract

mentioning

confidence: 89%

Light absorption by polaritons in an interface layer with strong excitonic response: effects of retardation and total reflection

Popov

Bagaeva

Teperik

2005

phys. stat. sol. (c)

View full text Add to dashboard Cite

show abstract

Functional Perovskite Hybrid of Polyacetylene Ammonium and Lead Bromide: Synthesis, Light Emission, and Fluorescence Imagining

Sun

Qin

et al. 2006

J. Phys. Chem. B

View full text Add to dashboard Cite

A highly photoresponsive perovskite hybrid containing an electroactive organic component (H1) was fabricated. A disubstituted polyacetylene (PA) with a hidden amino functionality (P3) was synthesized, hydrolysis and quaternization of which afforded the desired PA ammonium salt (P5). Mixing P5 with lead bromide readily yielded H1, which was stable, soluble, and film-forming. The inorganic framework induced the polymer chains to align in an ordered fashion, which helped to populate the chain segments with long conjugation lengths. The hybrid emitted a blue light (457 nm) in a high quantum yield (62%), thanks to the enhanced electronic conjugation, the weakened interaction between the layer-segregated chains, and the efficient energy transfer from the inorganic sheets to the organic layers. P3 exhibited a half-discharge time as short as approximately 0.7 s, representing the first example of an efficient photoconductive disubstituted PA. While stable to normal light illumination, H1 was rapidly bleached upon exposure to high-power UV irradiation, enabling facile generation of two-dimensional luminescent photopatterns. After the UV irradiation, the emissions of P9 and P9/H12 were enhanced and weakened, respectively, proving that the inorganic perovskite framework works as a photocatalyst for accelerating the bleaching process of the conjugated PA chains.

show abstract

Dyadic Green's function analysis of the non-stationary nanoelectrodynamic polaritonic response of a twodimensional excitonic layer

Horing

Bagaeva

Popov

2006

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Ultrafast radiative decay of polaritons in an interface layer with strong excitonic response

Cited by 5 publications

References 14 publications

Light absorption by polaritons in an interface layer with strong excitonic response: effects of retardation and total reflection

Light absorption by polaritons in an interface layer with strong excitonic response: effects of retardation and total reflection

Functional Perovskite Hybrid of Polyacetylene Ammonium and Lead Bromide: Synthesis, Light Emission, and Fluorescence Imagining

Dyadic Green's function analysis of the non-stationary nanoelectrodynamic polaritonic response of a twodimensional excitonic layer

Contact Info

Product

Resources

About