Fig. 1: Raman signatures of hBN/WSe2/Gr vdWH and its constituents.
From: Probing the interfacial coupling in ternary van der Waals heterostructures
a Optical image of the sample containing 22L-hBN/3L-WSe2/5LG, 22L-hBN/3L-WSe2, 3L-WSe2/5LG, and 3L-WSe2. b Schematic diagram of cross-section of the sample along the dash-dotted line in a. The regions of ternary vdWH, binary vdWHs, and pristine WSe2 flakes are indicated. c Raman spectra of 22L-hBN, 5LG, 3L-WSe2, 3L-WSe2/5LG, 22L-hBN/3L-WSe2, and 22L-hBN/3L-WSe2/5LG. Stars indicate the LB modes. S3LW, SGr and ShBN denote the S modes of 3L-WSe2, multilayer graphene and hBN flakes, respectively.
