Room Temperature Frenkel-Wannier-Mott Hybridization of Degenerate Excitons in a Strongly Coupled Microcavity

Slootsky, Michael; Liu, Xiaoze; Menon, Vinod M.; Forrest, Stephen R.

doi:10.1103/physrevlett.112.076401

Cited by 66 publications

(62 citation statements)

References 21 publications

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“…Furthermore, optical nonlinearities in such systems were predicted to be increased by up to two orders of magnitude due to hybridization of the excitonic species 21 . Recent observations of the strong light-matter coupling in such hybrid structures 22, 23 , highlights their potential, albeit no observation of optical nonlinearities or lasing have been reported up to now.…”

Section: Introductionmentioning

confidence: 99%

Hybrid organic-inorganic polariton laser

Paschos

Somaschi

Tsintzos

et al. 2017

Sci Rep

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Organic materials exhibit exceptional room temperature light emitting characteristics and enormous exciton oscillator strength, however, their low charge carrier mobility prevent their use in high-performance applications such as electrically pumped lasers. In this context, ultralow threshold polariton lasers, whose operation relies on Bose-Einstein condensation of polaritons – part-light part-matter quasiparticles, are highly advantageous since the requirement for high carrier injection no longer holds. Polariton lasers have been successfully implemented using inorganic materials owing to their excellent electrical properties, however, in most cases their relatively small exciton binding energies limit their operation temperature. It has been suggested that combining organic and inorganic semiconductors in a hybrid microcavity, exploiting resonant interactions between these materials would permit to dramatically enhance optical nonlinearities and operation temperature. Here, we obtain cavity mediated hybridization of GaAs and J-aggregate excitons in the strong coupling regime under electrical injection of carriers as well as polariton lasing up to 200 K under non-resonant optical pumping. Our demonstration paves the way towards realization of hybrid organic-inorganic microcavities which utilise the organic component for sustaining high temperature polariton condensation and efficient electrical injection through inorganic structure.

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Section: Introductionmentioning

confidence: 99%

Hybrid organic-inorganic polariton laser

Paschos

Somaschi

Tsintzos

et al. 2017

Sci Rep

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“…It reaches values similar to those characteristic of hybrid organic-inorganic systems with simulataneous coupling of two degenerate excitons and a microcavity photon. [52] The (non-linear) inter-condensate interaction is resonant (similar to FRET) and approximately inversely proportional to the distance separating two sheets. It can be controlled by adjusting this distance with a very high precision by using the atomically thin dielectric h-BN.…”

Section: Discussionmentioning

confidence: 99%

Exciton polaritons in two-dimensional dichalcogenide layers placed in a planar microcavity: Tunable interaction between two Bose-Einstein condensates

et al. 2015

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Exciton-polariton modes arising from interaction between bound excitons in monolayer thin semiconductor sheets and photons in a Fabry-Perot microcavity are considered theoretically. We calculate the dispersion curves, mode lifetimes, Rabi splitting, and Hopfield coefficients of these structures for two nearly 2D semiconductor materials, MoS2 and WS2, and suggest that they are interesting for studying the rich physics associated with the Bose-Einstein condensation of exciton-polaritons. The large exciton binding energy and dipole allowed exciton transitions, in addition to the relatively easily controllable distance between the semiconductor sheets are the advantages of this system in comparison with traditional GaAs or CdTe based semiconductor microcavities. In particular, in order to mimic the rich physical properties of the quantum degenerate mixture of two bosonic species of dilute atomic gases with tunable inter-species interaction , we put forward a structure containing two semiconductor sheets separated by some atomic-scale distance (l) using a nearly 2D dielectric (e.g. h-BN), which offers the possibility of tuning the interaction between two exciton-polariton Bose-Enstein condensates. We show that the dynamics of this novel structure are ruled by two coupled Gross-Pitaevskii equations with the coupling parameter ∼ l −1 .

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“…[14][15][16][17] Here, we investigate ladder-type oligo(p-phenylene)s that offer various attractive features in the above context. [18][19][20] Because of their rigid planar geometry, these molecules exhibit mirror-type, weakly Stokes-shifted absorption and emission spectra featuring well-resolved vibronic progressions. The absorption coefficient is considerably larger than that of the respective oligo(p-phenylene)s with non-rigidified backbone and the fluorescence quantum yield reaches unity in solution.…”

Section: Introductionmentioning

confidence: 99%

Strong Coupling and Laser Action of Ladder‐Type Oligo(p‐phenylene)s in a Microcavity

et al. 2014

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We investigate the coupling of ladder-type quarterphenyl to the photon modes of a dielectric ZrOx /SiOx microcavity at ultraviolet wavelengths. For a relatively long cavity (≈10 μm) with high-reflectivity mirrors (0.998), optically pumped laser action is demonstrated in the weak-coupling regime. We observe single-mode operation with a threshold of 0.4 mJ cm(-2) . Strong coupling is achieved by using a short λ/2 cavity. We find pronounced anti-crossing features of the molecular (0,0) and (0,1) vibronic transitions and the cavity mode in angle-dependent reflectivity measurements providing Rabi splittings of (90±10) meV. All these features occur spectrally resonant to the exciton transition of ZnO demonstrating the potential of ladder-type oligo(p-phenylene)s for the construction of inorganic/organic hybrid microcavities.

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Room Temperature Frenkel-Wannier-Mott Hybridization of Degenerate Excitons in a Strongly Coupled Microcavity

Cited by 66 publications

References 21 publications

Hybrid organic-inorganic polariton laser

Hybrid organic-inorganic polariton laser

Exciton polaritons in two-dimensional dichalcogenide layers placed in a planar microcavity: Tunable interaction between two Bose-Einstein condensates

Strong Coupling and Laser Action of Ladder‐Type Oligo(p‐phenylene)s in a Microcavity

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