Original scientific paper

Some optical properties of BiI3 films

A. H. Abou El Ela ; Physics Department, Islamic Girls College, Nasr City, Cairo, and Physics Department*, National Research Centre, Cairo, Egypt
Kh. Mady ; Physics Department, Islamic Girls College, Nasr City, Cairo, and Physics Department*, National Research Centre, Cairo, Egypt
H. Abdelhalim ; Physics Department, Islamic Girls College, Nasr City, Cairo, and Physics Department*, National Research Centre, Cairo, Egypt

Abstract

The optical properties of high quality BiI3 films were investigated near the fundamental absorption edge. The absorption coefficient near the absorption edge is well described by Urbach's rule. The large peak near 2.0 eV is ascribed to direct excitonic transition near the edge. The absorption bands at 2.03 eV and 2.39 eV are attributed to the spin-orbit splitting of the low energy iodine doublet.

Keywords

Hrčak ID:

327730

URI

https://hrcak.srce.hr/327730

Publication date:

6.4.1981.

Article data in other languages: croatian

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