Figure | Bipolar-barrier tunnel heterostructure of 2D BP/MoTe2/BP for MIR photodetection. (IMAGE)
Caption
Figure | Bipolar-barrier tunnel heterostructure of 2D BP/MoTe2/BP for MIR photodetection. a, Schematic of device structure. b, Schematic of band structure. Under mid-infrared light illumination, the effective barrier height in the valence bands of BP/MoTe2 heterostructure decreases compared to the dark condition, promoting quantum tunneling of photo hole carriers and resulting in significant tunneling photocurrents.
Credit
Fakun Wang, Song Zhu et al.
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