Interband Quantum Cascade Infrared Photodetectors: Current Status and Future Trends

The authors review the past, present, and possible future of interband quantum cascade photodetectors (IB QCPs) based on type-II superlattices of $I\phantom{\rule{0}{0ex}}I\phantom{\rule{0}{0ex}}I\ensuremath{-}V$ semiconductors, in the context of high-operating-temperature (HOT) conditions for infrared technologies. Emerging trends related to IB-QCP detectivity and response time are discussed in terms of commonly used benchmarks, to promote the development of IR HOT optoelectronics.