Reduced radiative currents from GaAs/InGaAs and AlGaAs/GaAs p-i-n quantum well devices - Nelson,J; Barnes,J; Ekins-Daukes,N; Barnham,KWJ; Kluftinger,B; Tsui,ESM; Foxon,CT; Cheng,TS; Roberts,JS (IOP PUBLISHING LTD, 1998)