Influence of the electron–phonon interaction on an inverted population in a semiconductor superlattice and a semiconductor size-quantized film in a magnetic field

PLD-produced thin films A3B5, A2B6, A6B4and heterostructures based on them for IR detectors

“…Secondly, choosing appropriate materials (constructing the profile of potential barriers) and/or varying the thickness of the active layer, one is able to rebuild the electron energy structure and tune the spectrum of registered wavelengths to the given task. Finally, quantum well heterostructures, namely, arrays of quantum dots with discrete spectrum of carriers, are considered as the best candidates for devices with temperature-independent characteristics [6], which is connected with the possibility of suppression of electronphonon relaxation mechanisms in quantum dots by appropriate reconstruction of their electron energy spectrum [7,8]. Thus, efficient operation of these systems is expected at room temperatures, while cooling down to ∼77 K is usually required for best operation of the detectors available now [1].…”