Evolution of the optical response of sputtered CdS:O as a function of temperature

Author

Adam B. Phillips;Jon M. Stone;Rajendra R. Khanal; Zhaoning Song;Geethika K. Liyanage;Corey R. Grice;Naba R. Paudel;Yanfa Yan;Michael J. Heben

Author_Institution

Wright Center for Photovoltaic Innovation and Commercialization, School of Solar and Advanced Renewable Energy, Department of Physics and Astronomy, University of Toledo, Ohio, 43606, USA

fYear

2015

fDate

6/1/2015 12:00:00 AM

Firstpage

1

Lastpage

4

Abstract

The linear absorption spectrum of an oxygenated CdS (CdS:O) thin film was measured as a function of annealing temperature. Subtle changes in the absorption spectrum were observed for short annealing times at temperatures up to 275 °C. Much more significant changes were observed as the temperature was increase from 275 °C to 325°C. Interestingly, at some point, increasing the temperature does not result in a change in the spectrum, indicating complete conversion into CdS. This evolution is also observed when the CdS:O film is capped with a thin film of CdTe. This suggests that an unreacted CdS:O layer is not likely to survive post deposition processing in CdTe solar cells.

Keywords

"Temperature measurement","Optical variables measurement","Integrated optics","Optical device fabrication","Optical films","Annealing","Heating"

Publisher

ieee

Conference_Titel

Photovoltaic Specialist Conference (PVSC), 2015 IEEE 42nd

Type

conf

DOI

10.1109/PVSC.2015.7355892

Filename

7355892