Probing Interlayer Interactions in Transition Metal Dichalcogenide Heterostructures by Optical Spectroscopy: MoS2/WS2 and MoSe2/WSe2 Rigosi, Albert F. ; Hill, Heather M. ; Li, Yilei ; Chernikov, Alexey ; Heinz, Tony F. Abstract Publication: Nano Letters Pub Date: August 2015 DOI: 10.1021/acs.nanolett.5b01055 Bibcode: 2015NanoL..15.5033R