Theoretical and Experimental Study of the Radiative Decay Process in a Modulation Doped GaAs/AlGaAs Heterointerface

• Authors: T. Lundström , J.P. Bergman , P.O. Holtz , B. Monemar , K. Campman , J.L. Merz , A.C. Gossard
• Languages of publication: EN

Abstracts

EN

We have theoretically and experimentally investigated the radiative recombination process in an n-type modulation doped GaAs/Al_{0.35}Ga_{0.65}As heterostructure. The dynamical reshaping of the potential profile across the heterojunction, and the decay of the spatially indirect radiative recombination between electrons in the two-dimensional electron gas and photo-created holes, have been numerically simulated for various values of the electric field across the heterojunction. Optical matrix elements were deduced from a self-consistent solution of the coupled Schrodinger and Poisson equations at every discrete point of time. The calculated recombination energies and integrated luminescence intensities were compared with experimental data from time-resolved photoluminescence measurements on an 800 Å wide GaAs/AlGaAs heterostructure.

Keywords

EN

78.66.-w; 78.60.-b

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1997
• Volume: 92
• Issue: 4
• Pages: 824-828

Dates

published

1997-10

Contributors

author

T. Lundström

• Department of Physics and Measurement Technology, Linköping University, 581 83 Linköping, Sweden

author

J.P. Bergman

• Department of Physics and Measurement Technology, Linköping University, 581 83 Linköping, Sweden

author

P.O. Holtz

• Department of Physics and Measurement Technology, Linköping University, 581 83 Linköping, Sweden

author

B. Monemar

• Department of Physics and Measurement Technology, Linköping University, 581 83 Linköping, Sweden

author

K. Campman

• QUEST Center, University of California at Santa Barbara, Santa Barbara, CA 93106, USA

author

J.L. Merz

• QUEST Center, University of California at Santa Barbara, Santa Barbara, CA 93106, USA

author

A.C. Gossard

• QUEST Center, University of California at Santa Barbara, Santa Barbara, CA 93106, USA