Figure 7 | Scientific Reports

Figure 7

From: Ultra-low Doping on Two-Dimensional Transition Metal Dichalcogenides using DNA Nanostructure Doped by a Combination of Lanthanide and Metal Ions

Figure 7

Schematic diagram and characterization of TMD photodetectors doped by various Co-DNA.

(a) Schematic diagram of Co-DNA-doped MoS2/WSe2 photodetectors with a light source (λ = 785 nm and P = 0.6 mW) and the energy band diagrams of Ti-MoS2/Pt-WSe2 junctions under the illuminated condition. ID-VG characteristics of Gd3+-based Co-DNA-doped (b) MoS2 and (e) WSe2 photodetectors before/after the laser exposure. Photoresponsivity of (c) MoS2 and (f) WSe2 photodetectors as a function of VGS–VTH (in off-state). Detectivity of (d) MoS2 and (g) WSe2 photodetectors as a function of VGS–VTH (in off-state).

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