Numéro
Le Journal de Physique IV
Volume 03, Numéro C5, Octobre 1993
Third International Conference on Optics of Excitons in Confined
Page(s) C5-413 - C5-416
DOI http://dx.doi.org/10.1051/jp4:1993588
Third International Conference on Optics of Excitons in Confined

Le Journal de Physique IV 03 (1993) C5-413-C5-416

DOI: 10.1051/jp4:1993588

Zn(S, Se)-based quantum wells : band offsets, excitons and optical properties

G. MARTINO1, R. GIRLANDA1, N. TOMASSINI2, A. D'ANDREA2 and R. ATANASOV3

1  Istituto di Struttura della Materia, Università di Messina, Salita Sperone, S. Agata, 98166 Messina, Italy
2  Istituto di Metodologie Avanzate Inorganiche, CNR, 00016 Monterotondo Staz., Roma, Italy
3  Scuola Normale Superiore, Pz. dei Cavalieri 7, 56126 Pisa, Italy


Abstract
The Wannier exciton properties in a single quantum well (SQW) of Zn(S,Se)/ZnS strained materials are reproduced by an accurate variational envelope function. A systematic study of binding energy and oscillator strength is performed as a function of well thicknesses and strain parameter values. Optical response and second harmonic generation effects (SHG) in asymmetric single quantum wells (ASQWs) is computed and briefly discussed.



© EDP Sciences 1993