Reflectivity spectra analysis of the Sb 40S 60 and Sb 28S 72 non-crystalline thin films
Abstract
The measurements of the reflectivity and absorption coefficient in 0.5-5.9 eV energy range for Sb 40S 60 and Sb 28S 72 non-crystalline thin films have been carried out. A careful analysis of the absorption coefficient indicated the non-crystalline character of the studied samples, similarly to the diagnosis obtained from X-ray analysis. The reflectivity spectra, however, display some fine structure that suggests the existence of some degree of medium range order in the samples, in agreement with previous X-ray measurements. These results support the general theoretical discussion concerning the cluster size limit sufficient to reproduce the crystalline-like properties of electronic band structure.
- Publication:
-
Solid State Communications
- Pub Date:
- February 1989
- DOI:
- 10.1016/0038-1098(89)90243-3
- Bibcode:
- 1989SSCom..69..569C