Numéro
Le Journal de Physique IV
Volume 03, Numéro C5, Octobre 1993
Third International Conference on Optics of Excitons in Confined
Page(s) C5-95 - C5-98
DOI http://dx.doi.org/10.1051/jp4:1993517
Third International Conference on Optics of Excitons in Confined

Le Journal de Physique IV 03 (1993) C5-95-C5-98

DOI: 10.1051/jp4:1993517

Negatively charged exciton X and donor bound exciton D0X in planar doped CdTe/Cdl-xZnxTe quantum well heterostructures

K. KHENG1, R.T. COX1, M. MAMOR2, K. SAMINADAYAR1 and S. TATARENKO2

1  CEA, Département de Recherche Fondamentale sur la Matière Condensée, BP. 85X, 38041 Grenoble cedex, France
2  Laboratoire de Spectrométrie Physique, CNRS, Université J. Fourier, BP. 87, 38402 Saint Martin d'Hères cedex, France


Abstract
A comparative luminescence and magneto-transmission study is made of donor bound excitons DoX and negatively charged excitons X- in planar doped CdTe/Cd1-xZnxTe quantum wells of 100Å width. As the dopant plane is removed from the well centres to 450Å distance in the barriers, DoX evolves continuously into an X- species weakly localised in random potential fluctuations. The exciton localisation energy in DoX transforms into the second electron's binding energy in X-.



© EDP Sciences 1993