Progress and challenges in blocked impurity band infrared detectors for space-based astronomy

Astronomical detection at infrared wavelengths is crucial in astrophysics due to the critical information in this wavelength range. Blocked impurity band (BIB) infrared detectors are desirable for space-based astronomical observation due to their broad response range, low dark currents, high quantum efficiencies, and excellent radiation resistance. In this review, typical BIB device structures and device physics development are first introduced. Subsequently, we discuss progress in Si-based BIB detectors with different doping types and emphasize their applications in space-based infrared detection. Additionally, we discuss recent efforts on pixel performance optimization, response extension, and higher operating temperature devices. Finally, we conclude by proposing the challenges and perspectives of BIB detectors with improved detection performances.

Automated summary

Infrared detection plays a crucial role in astrophysics due to the valuable information it provides. Blocked impurity band (BIB) infrared detectors are highly desirable for space-based astronomical observation due to their wide response range, low dark currents, high quantum efficiencies, and excellent radiation resistance. This review introduces typical BIB device structures and device physics development, discusses progress in Si-based BIB detectors with different doping types, and emphasizes their applications in space-based infrared detection. Furthermore, recent efforts on pixel performance optimization, response extension, and higher operating temperature devices are discussed. Challenges and perspectives of BIB detectors with improved detection performances are also proposed.