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Conduction band structure of a QCD for the long wave infrared range at −0.085 V per period (15.4 kV/cm). The whole cascade and the first energy level of the previous cascade n are presented, together with their associated stationary wave functions.
Experimental and calculated dark current density vs bias characteristics for the 10-period QCD and three temperatures. Dotted lines: experimental measurements; solid lines: calculations.
J(V) dark characteristics of the 10-period QCD at 40 K. Solid line: experimental measurement; dotted blue line: result from the “thermalized subbands” approach; dashed red line: calculation resulting from the resonant tunneling model.
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