TY - JOUR
T1 - Measurement of the optical dielectric function of monolayer transition-metal dichalcogenides
T2 - MoS2, Mo S e2, WS2, and WS e2
AU - Li, Yilei
AU - Chernikov, Alexey
AU - Zhang, Xian
AU - Rigosi, Albert
AU - Hill, Heather M.
AU - Van Der Zande, Arend M.
AU - Chenet, Daniel A.
AU - Shih, En Min
AU - Hone, James
AU - Heinz, Tony F.
N1 - Publisher Copyright:
© 2014 American Physical Society.
PY - 2014/11/17
Y1 - 2014/11/17
N2 - We report a determination of the complex in-plane dielectric function of monolayers of four transition-metal dichalcogenides: MoS2, MoSe2, WS2, and WSe2, for photon energies from 1.5 to 3 eV. The results were obtained from reflection spectra using a Kramers-Kronig constrained variational analysis. From the dielectric functions, we obtain the absolute absorbance of the monolayers. We also provide a comparison of the dielectric function for the monolayers with the corresponding bulk materials.
AB - We report a determination of the complex in-plane dielectric function of monolayers of four transition-metal dichalcogenides: MoS2, MoSe2, WS2, and WSe2, for photon energies from 1.5 to 3 eV. The results were obtained from reflection spectra using a Kramers-Kronig constrained variational analysis. From the dielectric functions, we obtain the absolute absorbance of the monolayers. We also provide a comparison of the dielectric function for the monolayers with the corresponding bulk materials.
UR - https://www.scopus.com/pages/publications/84911370010
UR - https://www.scopus.com/pages/publications/84911370010#tab=citedBy
U2 - 10.1103/PhysRevB.90.205422
DO - 10.1103/PhysRevB.90.205422
M3 - Article
AN - SCOPUS:84911370010
SN - 1098-0121
VL - 90
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 20
M1 - 205422
ER -