GoKawiilResearchers grow bilayer MoS2 that retains a direct band gap
Scientists used chemical vapor deposition to grow atomically aligned 1H-stacked bilayers of molybdenum disulfide, a two-dimensional semiconductor. Unlike conventional bilayer MoS2, which typically shifts to an indirect band gap, this stacking arrangement preserves a direct band gap and shows stronger light emission and valley polarization than standard bilayers, according to the study published in Nature.