Piezoelectric effect in elongated (In,Ga)As islands on GaAs(100)
Identifieur interne : 00C724 ( Main/Repository ); précédent : 00C723; suivant : 00C725Piezoelectric effect in elongated (In,Ga)As islands on GaAs(100)
Auteurs : RBID : Pascal:03-0093773Descripteurs français
- Pascal (Inist)
- 7855C, 7867L, 7765L, Etude expérimentale, Indium composé, Gallium arséniure, Semiconducteur III-V, Matériau semiconducteur piézoélectrique, Couche épitaxique semiconductrice, Structure îlot, Photoluminescence, Déplacement raie, Rétrécissement raie, Microscopie force atomique, Diffraction RX, Point quantique semiconducteur.
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Abstract
The piezoelectric (PZ) effect is demonstrated for the elongated three-dimensional (In,Ga)As islands grown on a GaAs (100) substrate. The photoluminescence (PL) spectrum is studied as a function of excitation intensity. With increasing excitation intensity, a blue shift and a linewidth reduction of the PL peak from the (In,Ga)As islands are observed. The observed phenomena are attributed to the screening of the internal strain-induced PZ field in the (In,Ga)As islands.
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<author><name sortKey="Wang, Xiaoyong" uniqKey="Wang X">Xiaoyong Wang</name>
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<front><div type="abstract" xml:lang="en">The piezoelectric (PZ) effect is demonstrated for the elongated three-dimensional (In,Ga)As islands grown on a GaAs (100) substrate. The photoluminescence (PL) spectrum is studied as a function of excitation intensity. With increasing excitation intensity, a blue shift and a linewidth reduction of the PL peak from the (In,Ga)As islands are observed. The observed phenomena are attributed to the screening of the internal strain-induced PZ field in the (In,Ga)As islands.</div>
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