Recent Progress on Infrared Detectors: Materials and Applications

Abstract

 It is impossible for human eyes to see infrared radiation, a type of electromagnetic wave with a wavelength that falls between visible light and microwaves. This radiation must be transformed into other physically quantifiable qualities in order to be detected and measured in order to determine whether it is present and how intense it is. Infrared detectors are tools that transform the signal from incident infrared light into an electrical signal output. With the wide application of infrared detectors in various countries, higher requirements are put forward for infrared detectors. In order to further expand the wavelength, improve the resolution and reduce the cost, infrared detectors based on class II superlattices, colloidal quantum dots, silicon-based materials and other new materials and technologies have been developed. In this paper, the development of infrared detectors at home and abroad is reviewed and the new materials and technologies of infrared detectors are reported. limitations and advantages of the current research on infrared detectors are discussed, and the future development trend of infrared detector is prospected. Furthermore, recent progress on IR detectors is outlined. The basic mechanism is introduced. Then, materials nanowire, HgCdTe, HOT and InAs/InGaAs are included. The last but not the least, further applications are displayed.