Affordable Access

Publisher Website

Thickness dependence of optical gap and absorption tail for amorphous germanium films

Authors
Journal
Solid State Communications
0038-1098
Publisher
Elsevier
Publication Date
Volume
87
Issue
1
Identifiers
DOI: 10.1016/0038-1098(93)90525-r

Abstract

Abstract The optical constants of four dc-magnetron sputtered a-Ge films with different thicknesses have been determined. From optical absorption, a thickness dependence of optical gap and absorption tail has been found, and it is associated with different void fractions in the films, that could induce a downward movement of the valence band with respect to the defect states and the conduction band. Oxygen depth profiles, carried out on the films, support a thickness dependence of the film void fraction, due to a gradient in the void density which suggest a cone growth for our films.

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments

More articles like this

Thickness and doping dependence of the optical gap...

on Solid State Communications Jan 01, 1988

Thickness dependence of optical properties of hydr...

on Journal of Non-Crystalline Sol... Jan 01, 1990

A study of optical absorption in amorphous hydroge...

on Applied Surface Science Jan 01, 2010

Temperature dependence of the optical absorption e...

on Materials Science and Engineer... Jan 01, 1997
More articles like this..