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Quantum model of microcavity intersubband electroluminescent devices

Abstract : We present a quantum theoretical analysis of the electroluminescence from an intersubband transition of a quantum well structure embedded in a planar microcavity. By using a cluster factorization method, we have derived a closed set of dynamical equations for the quantum well carrier and cavity photon occupation numbers, the correlation between the cavity field and the intersubband polarization, as well as polarization-polarization contributions. In order to model the electrical excitation, we have considered electron population tunneling from an injector and into an extractor contact. The tunneling rates have been obtained by considering the bare electronic states in the quantum well and the limit of validity of this approximation (broad-band injection) are discussed in detail. We apply the present quantum model to provide a comprehensive description of the electronic transport and optical properties of an intersubband microcavity light emitting diode, accounting for non-radiative carrier relaxation and Pauli blocking. We study the enhancement of the electroluminescence quantum efficiency passing from the weak to the strong polariton coupling regime.
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https://hal.archives-ouvertes.fr/hal-00189235
Contributor : Cristiano Ciuti Connect in order to contact the contributor
Submitted on : Monday, April 28, 2008 - 8:51:16 PM
Last modification on : Wednesday, August 31, 2022 - 4:46:23 PM
Long-term archiving on: : Tuesday, September 21, 2010 - 4:01:23 PM

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  • HAL Id : hal-00189235, version 2
  • ARXIV : 0711.3146

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Simone de Liberato, Cristiano Ciuti. Quantum model of microcavity intersubband electroluminescent devices. Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2008, 77, pp.155321. ⟨hal-00189235v2⟩

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