Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Comparison of (a) refractive index n and (b) extinction coefficient k between the single-crystalline MoS2 and the electron-sample (300 kGy). (c) Optical absorption coefficient shows the dependence of (ahv)1/2 on the photon energy (hv) for two samples. (d) Extrapolating the linear part of each curve toward energy axis gives the corresponding indirect bandgap energy (Eg).
