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Vertical Coupling Effects in Arrays of InAs Quantum Dots
Author(s) -
Taddei S.,
Colocci M.,
Vinattieri A.,
Gucciardi P.G.,
Bogani F.,
Franchi S.,
Frigeri P.,
Lazzarini L.,
Salviati G.
Publication year - 2001
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(200103)224:2<413::aid-pssb413>3.0.co;2-6
Subject(s) - blueshift , quantum dot , redshift , indium , coulomb , coupling (piping) , condensed matter physics , indium arsenide , strain (injury) , optoelectronics , materials science , physics , photoluminescence , quantum mechanics , electron , medicine , galaxy , metallurgy
We show that either a blueshift or a redshift of the fundamental transition energy can be observed in vertical arrays of InAs/GaAs quantum dots, depending on the spacer thicknesses, and explained by including strain, indium segregation, and Coulomb effects.