@article{2145d4f84d2d41688b5b7923e0003048,
title = "Ellipsometric characterization and density-functional theory analysis of anisotropic optical properties of single-crystal α-SnS",
abstract = "We report on the anisotropic optical properties of single-crystal tin monosulfide (SnS). The components εa, εb, and εc of the pseudodielectric-function tensor 〈ε〉= 〈ε1〉+i〈ε2〉 spectra are taken from 0.73 to 6.45eV by spectroscopic ellipsometry. The measured 〈ε〉 spectra are in a good agreement with the results of the calculated dielectric response from hybrid density functional theory. The 〈ε〉 spectra show the direct band-gap onset and a total of eight above-band-gap optical structures that are associated with the interband-transition critical points (CPs). We obtain accurate CP energies by fitting analytic CP expressions to second-energy-derivatives of the 〈ε〉 data. Their probable electronic origins and implications for photovoltaic applications are discussed.",
author = "Banai, {R. E.} and Burton, {L. A.} and Choi, {S. G.} and F. Hofherr and T. Sorgenfrei and A. Walsh and B. To and A. Cr{\"o}ll and Brownson, {J. R.S.}",
year = "2014",
month = jul,
day = "7",
doi = "10.1063/1.4886915",
language = "אנגלית",
volume = "116",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics",
number = "1",
}