Figure 2.

(a) Raman spectra of the E¹_2g peak intensity variation for few monolayers thick 2H-MoTe₂ flakes exposed to 100 °C in air for the shown time intervals. (b) Comparison of E¹_2g peak intensities changes as a function of 100 °C in air holding time for uncapped MoTe₂ and BN-capped MoTe₂ flakes; to facilitate the comparisons and avoid errors due to absolute peak intensity changes over time, the peak intensity was normalized to the Si substrate peak (520.5 cm⁻¹). The shown linear fitting was used to calculate E¹_2g peak intensity decline due to oxidation processes for 2H-MoTe₂ and 2H-MoTe₂/a-BN.