Parameterized optical properties of monolayer MoSe2

Abstract

We report a model dielectric function, ε = ε1 + iε2, of MoSe2 from 1 to 6.42 eV with which the optical property of a MoSe2 monolayer can be calculated at arbitrary temperatures from 31 to 300 K for potential application for device designs based on this material. Analytic representations, performed with the dielectric-function parametric model, allow interpolation with respect to both energy and temperature. We used reported spectrum data [Park et al., Sci. Rep. 8(1), 3173 (2018)] as the basis of our approach, verifying that the parameterized model dielectric function can reproduce the experimental data at various temperatures and can also produce the dielectric function (and the refractive index) at arbitrary temperatures.