Optical Properties of Epitaxial PbS Films in the Energy Range 2–6 eV

Autor:	C. E. Rossi, William Paul
Rok vydání:	1967
Předmět:	Absolute magnitude Range (particle radiation) Materials science Kramers–Kronig relations Condensed matter physics business.industry General Physics and Astronomy Epitaxy Spectral line Optics Interference (communication) Electron diffraction Magnitude (astronomy) business
Zdroj:	Journal of Applied Physics. 38:1803-1808
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.1709764
Popis:	The reflectivity of epitaxial PbS films has been compared with the reflectivity of bulk PbS in the energy range 2.1 to 6.2 eV and found to agree in both magnitude and structure within a few percent at energies where interference effects can be neglected. The transmission of several films with thicknesses varying from 335 to 550 A has been measured and the structure and shape of the spectra shown to be the same for the films with different thicknesses. The reflectivity of bulk PbS between 2.1 and 6.2 eV has been combined with measurements made by other workers outside of this range to compute optical constants from the Kramers Kronig relation. The optical constants obtained in this manner appear to agree quite well (within about 10% in most cases) with those obtained from the reflectivity and transmission of the films, considering the experimental difficulties experienced in measuring film thickness and the absolute magnitude of the reflectivity.
Databáze:	OpenAIRE
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