Persistent photoconductivity in uniforndy and selectively silicon doped AlAs / GaAs short period superlattices P. Jeanjean, J. Sicart, J.L. Robert, F. Mollot et R. PlanelJ. Phys. III France, 1 4 (1991) 503-510DOI: https://doi.org/10.1051/jp3:1991134