Electric-field-tunable intervalley excitons and phonon replicas in bilayer WSe${}_2$

Mashael M. Altaiary, Erfu Liu, Ching-Tarng Liang +7

We report the direct observation of intervalley exciton between the Q conduction valley and $\Gamma$ valence valley in bilayer WSe${}_2$ by photoluminescence. The Q$\Gamma$ exciton lies at ~18…