Back to Search
Start Over
Anomalous behavior of silver doped indium sulfide thin films.
- Source :
- Journal of Applied Physics; 8/1/2006, Vol. 100 Issue 3, p033504, 8p, 1 Black and White Photograph, 1 Diagram, 3 Charts, 11 Graphs
- Publication Year :
- 2006
-
Abstract
- The effect of doping spray pyrolyzed thin films of In<subscript>2</subscript>S<subscript>3</subscript> with silver is discussed. It was observed that silver diffused into In<subscript>2</subscript>S<subscript>3</subscript> films in as deposited condition itself. Depth profile using x-ray photoelectron spectroscopy clearly showed diffusion of silver into In<subscript>2</subscript>S<subscript>3</subscript> layer without any annealing. X-ray analysis revealed significant enhancement in crystallinity and grain size up to an optimum percentage of doping concentration. This optimum value showed dependence on thickness and atomic ratio of indium and sulfur in the film. Band gap decreased up to the optimum value of doping and thereafter it increased. Electrical studies showed a drastic decrease in resistivity from 1.2×10<superscript>3</superscript> to 0.06 Ω cm due to doping. A sample having optimum doping was found to be more photosensitive and low resistive when compared with a pristine sample. Improvement in crystallinity, conductivity, and photosensitivity due to doping of spray pyrolyzed In<subscript>2</subscript>S<subscript>3</subscript> films with Ag helped to attain efficiency of 9.5% for Ag/In<subscript>2</subscript>S<subscript>3</subscript>/CuInS<subscript>2</subscript>/ITO (indium tin oxide) solar cell. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 100
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 22030632
- Full Text :
- https://doi.org/10.1063/1.2221531