Fig. 1: Schematic diagram of the LWIR T2SL phototransistor structure with a summary of the key fabrication steps at the right.
From: Band-structure-engineered high-gain LWIR photodetector based on a type-II superlattice
Blue numbers indicate the sector designations used in Fig. 2, with 1 the bottom contact, 2 the emitter, 3 the base, and 4–5 the hybrid collector
