Published July 3, 2005 | Version v1
Conference paper Metadata-only

Time resolved photoluminescence study of ZnO/(Zn,Mg)O quantum wells

Bretagnon, Thierry
Valvin, Pierre
Lefebvre, Pierre
Gil, Bernard
Morhain, Christian
Tang, Xiaodong
Others:
Groupe d'étude des semiconducteurs (GES) ; Université Montpellier 2 - Sciences et Techniques (UM2)-Centre National de la Recherche Scientifique (CNRS)
Centre de recherche sur l'hétéroepitaxie et ses applications (CRHEA) ; Université Nice Sophia Antipolis (1965 - 2019) (UNS) ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA)
Shu Ping Lau
Siu Fung Yu
Gyu-Chul Yi
Masashi Kawasaki

Description

We have investigated a series of samples embedding ZnO/(Zn,Mg)O quantum wells of different sizes, in wurtzite phase, by using time-resolved photoluminescence. The samples were grown by molecular beam epitaxy on ZnO templates, themselves deposited on sapphire substrates. The presence of large internal electric fields in these quantum wells manifests itself not only through the energies of the optical recombinations, but also through the size dependence of the recombination times. An envelope-function model that includes the variational calculation of the exciton binding energy allows us to determine a value of 0.9 MV/cm for the internal electric field.

Abstract

International audience

Additional details

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Created:
February 28, 2023
Modified:
November 27, 2023