Temperature dependence of the Urbach energy in ordered defect compounds Cu-III<inf>3</inf>-VI<inf>5</inf> and Cu-III<inf>5</inf>-VI<inf>8</inf>

Abstract:

Two previous models used with success in Cu-III-VI2 semiconductors have been employed to study the temperature dependence of the Urbach energy in ordered compounds Cu-III3-VI5 and Cu-III5-VI8. The model which contains two variable parameters seems to explain better the data over the whole temperature range studied. However, the ordered vacancy or the donor acceptor defect pair in the cation sublattice provides new features in these compounds that need further study. © 2006 Elsevier Ltd. All rights reserved.

Año de publicación:

2005

Keywords:

• A. Electronic materials
• A. Semiconductors
• D. Defects
• D. Optical properties

Fuente:

scopus