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- W4289779600 endingPage "2200898" @default.
- W4289779600 startingPage "2200898" @default.
- W4289779600 abstract "Photodetectors based on 2D transition-metal dichalcogenides (TMDs) are actively investigated to find promising structures with competitive photoresponsivity. Here, a ferroelectric TMD-based vertical photodetector with asymmetric graphene contacts is proposed, which is modulated with a poling field for controlled built-in potentials. Thus far, no device is reported, which combines the ferroelectricity of a 2D TMD for an ideal built-in potential with a vertical structure to reduce the channel length. A ferroelectric phase is obtained in 2D molybdenum ditelluride (MoTe2) by intensive laser irradiation, which transforms the 2H-MoTe2 phase to distorted 1T (d1T)-MoTe2. The subsequent poling of d1T-MoTe2 with −8 V bias results in a photoresponsivity of ≈853 A W–1 under 532 nm illumination at zero gate voltage, which is nearly ≈4.5 times higher than that of the 2H-MoTe2-based reference. The achieved photoresponsivity is the best value thus far compared to the reported values for 2D MoTe2-based UV–vis photodetectors. The origin of these enhancements is discussed in terms of changes in built-in potential at the junctions with asymmetric graphene layers based on the adjusted band alignments driven by the poling field." @default.
- W4289779600 created "2022-08-04" @default.
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- W4289779600 date "2022-08-04" @default.
- W4289779600 modified "2023-09-30" @default.
- W4289779600 title "High‐Performance Photoresponse in Ferroelectric d1T‐MoTe <sub>2</sub> ‐Based Vertical Photodetectors" @default.
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- W4289779600 doi "https://doi.org/10.1002/adom.202200898" @default.
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