Carrier injection effects on exciton dynamics in GaAs/AlAs resonant-tunneling diodes F. J. Teran, M. D. Martín, J. M. Calleja, L. Viña, L. Eaves and M. Henini EPL, 85 6 (2009) 67010 Published online: 07 April 2009 DOI: 10.1209/0295-5075/85/67010