Multi-spectral phototransistor based on 2-D materials/group Ⅳ bulk materials heterojunctions
Multi-spectral detection had significant applications in many fields of industry.High-performance broadband photodetectors integrating multi-band responses became one of the important research directions of optical imaging technology.Current research progress of broadband photodetectors was briefly introduced.The prospects of 2-D/3-D mix-dimensional van der Waals(VDW)heterojunctions in the development of broadband photodetectors were elaborated.Some progress of broadband phototransistors based on 2-D transition metal dichalcogenides/3-D group Ⅳ materials VDW heterojunctions by the research group,including traditional NPN-type,PNP-type phototransistors and emerging phototransistors with Schottky junction collectors were reviewed.Ultimately,the applications of these phototransistors were prospected.
detectorsphototransistorvan der Waals heterojunctionmulti-spectral photodetection2-D materialsgroup Ⅳ materials