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Raman Spectroscopy of Suspended MoS 2
Author(s) -
O'Brien Maria,
Scheuschner Nils,
Maultzsch Janina,
Duesberg Georg S.,
McEvoy Niall
Publication year - 2017
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201700218
Subject(s) - raman spectroscopy , materials science , substrate (aquarium) , chemical vapor deposition , suspension (topology) , analytical chemistry (journal) , deposition (geology) , strain (injury) , characterization (materials science) , optoelectronics , nanotechnology , optics , chemistry , chromatography , medicine , paleontology , physics , mathematics , homotopy , sediment , pure mathematics , biology , geology , oceanography
This report details the Raman spectroscopic characterization of suspended MoS 2 . MoS 2 was grown by chemical vapor deposition (CVD) and then transferred onto holey substrates using a polymer‐assisted technique, allowing measurement of suspended MoS 2 . Significant differences in the spectral characteristics of suspended and supported MoS 2 were observed which are attributed to strain in the MoS 2 suspended over the holey regions of the substrate. In particular, we investigate the low‐frequency Raman spectrum of free‐standing CVD‐grown MoS 2 , and estimate the strain caused in the layers by suspension over holes.