A quantum dot (QD) microcavity emitting around 1.3 mu m at room temperature is studied by photoreflectance (PR) and photoluminescence. The temperature dependence of the PR spectra line shape and amplitude allows determining the tuning condition of the quantum dot ground state transition with the cavity mode. Our study suggests a way to find the exciton energy when the distinct QD features are hidden by the broadening of the QD dielectric function in combination with the relatively narrow cavity-mode width. (c) 2007 American Institute of Physics.

Photoreflectance symmetry and amplitude study of quantum dots in microcavity light emitting diode structure: The cavity-ground state exciton resonance

De Giorgi M;Todaro MT;De Vittorio M;Tasco V;Passaseo A;
2007

Abstract

A quantum dot (QD) microcavity emitting around 1.3 mu m at room temperature is studied by photoreflectance (PR) and photoluminescence. The temperature dependence of the PR spectra line shape and amplitude allows determining the tuning condition of the quantum dot ground state transition with the cavity mode. Our study suggests a way to find the exciton energy when the distinct QD features are hidden by the broadening of the QD dielectric function in combination with the relatively narrow cavity-mode width. (c) 2007 American Institute of Physics.
2007
Istituto di Nanotecnologia - NANOTEC
INFM
CHEMICAL-VAPOR-DEPOSITION
SPECTROSCOPY
REGIME
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.14243/123120
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