Abstract
Bistable quantum-well infrared phototransistors (BQWIPs) utilising intersubband electron phototransitions and resonant-tunnelling injection are considered. The mechanisms of the bistability effect are discussed. An analytical model of the BQWIP operation is proposed and used to derive its characteristics. To optimise the BQWIP performance the parameters of the hysteresis loops in the BQWIP characteristics are obtained as functions of its physical parameters.
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