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(Color online) Sketch of the technique used to suppress the surface leakage in a double heterostructure. This figure represents the case when the contact region is inverted.
(Color online) Quantum efficiency of control samples A-1 and B-1 at . The higher response of sample A-1 in the LWIR is due to the response from the two superlattice contacts.
(Color online) Variation of the inverse of the in function of the perimeter over area ratio for samples B-1 (a), B-2 (b), B-3 (c), and B-4 (d). The measurements of the differential resistance were realized at . The red line is a linear fit of the data points.
Summary of surface resistivities and statistics.
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