Yb. Li et al., INTERSUBBAND ELECTROLUMINESCENCE FROM GAAS ALGAAS TRIPLE BARRIER RESONANT-TUNNELING STRUCTURES/, Physica status solidi. b, Basic research, 204(1), 1997, pp. 435-437
This paper reports the first observation of intersubband electrolumine
scence from a single period resonant tunnelling structure. The emissio
n (lambda = 8.4 mu m) with a full width at half maximum of 7 meV, was
observed from a GaAs/AlGaAs triple barrier structure with quantum well
widths of 66 and 33 Angstrom. The emission was coupled out of the sam
ple by a metallic grating deposited on the surface.