Electroluminescence of monolayer WS${}_2$ in a scanning tunneling microscope: the effect of bias polarity on the spectral and angular distribution of the emitted light

Ricardo Javier Peña Román}, Delphine Pommier, Rémi Bretel +12

Inelastic electron tunneling in a scanning tunneling microscope (STM) is used to generate excitons in monolayer tungsten disulfide (WS${}_2$). Excitonic electroluminescence is measur…