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Electrically tunable mid-infrared electroluminescence from graded cascade structures

Vasilyev, Yu. B. ; Solovev, V. A. ; Meltser, B. Ya. ; Semenov, A. N. ; Ivanov, S. V. ; Kopev, P. S. ; Ulbrich, N. ; Abstreiter, Gerhard ; Amann, A.-C. ; Schmult, Stefan ; Wegscheider, Werner
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Date of publication of this fulltext: 15 Dec 2009 08:57


Abstract

Mid-infrared electroluminescence (EL) is observed from multiperiod bilayer type-II InAs/AlGaSb structures with the effective interlayer separation controlled by bias. The emission with powers in the microwatt range is characterized by a linear dependence of the photon energy on the bias. By measuring the temperature and current dependence of EL, we find evidence that the EL emission results from ...

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