Fig. 3: Polarization-resolved photoluminescence microscopy.

a Measured confocal scans of valley-specific emission intensities \({{{\mathcal{I}}}}_{{\sigma }^{\pm }}\) from embedded 1L-MoS2 decorated with monodispersed GNPs upon σ+ excitation and collected through a 660 nm bandpass filter. b Total intensity \({{{\mathcal{I}}}}_{{{\rm{tot}}}}=\left({{{\mathcal{I}}}}_{{\sigma }^{+}}+{{{\mathcal{I}}}}_{{\sigma }^{-}}\right)\) and (c) degree of circular polarization \({{\rm{DOCP}}}=\left({{{\mathcal{I}}}}_{{\sigma }^{+}}-{{{\mathcal{I}}}}_{{\sigma }^{-}}\right)/{{{\mathcal{I}}}}_{{{\rm{tot}}}}\) scans as calculated from the results shown in (a).