Figure 3

Doping mechanism by Co-DNA and Raman analysis of TMD films doped by Co-DNA.

(a) Schematic diagrams explaining Co-DNA doping on TMD. (b) Raman spectra of DNA, Gd³⁺-based Ln-DNA (or Gd-DNA) and Gd³⁺-based Co-DNA (with Cu²⁺ ions). (c) Extracted Raman peak shift data of MoS₂ and WSe₂ doped by Co-DNA.