A quantum dot (QD) microcavity emitting around 1.3 μm 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.
Photoreflectance symmetry and amplitude study of quantum dots in microcavity light emitting diode structure: the cavity-ground state exciton resonance
DE VITTORIO, Massimo;CINGOLANI, Roberto
2007-01-01
Abstract
A quantum dot (QD) microcavity emitting around 1.3 μm 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.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
