Photon emission induced by elastic exciton-carrier scattering in semiconductor quantum wells H. Ouerdane, R. Varache, M. E. Portnoi and I. Galbraith Eur. Phys. J. B, 65 2 (2008) 195-206 Published online: 23 September 2008 DOI: 10.1140/epjb/e2008-00355-x