Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1547605 | Physica E: Low-dimensional Systems and Nanostructures | 2009 | 4 Pages |
Abstract
A novel low cost process has been developed for application in porous silicon-based photodetectors and solar cells, where conventional doping processes are not affordable because of the high processing cost and technical difficulties. Ytterbium and erbium (Yb3+–Er3+) ions were introduced into luminescent porous silicon stain etched by thermal diffusion. Doping profiles were evaluated by energy-dispersive spectroscopy analysis. The visible and near-infrared photoluminescence of Yb3+–Er3+ co-doped stain-etched porous silicon layers is observed and evaluated under 980 nm pumping. Up-conversion processes that could improve the efficiency of silicon-based solar cells are detected.
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Authors
B. Díaz-Herrera, B. González-Díaz, R. Guerrero-Lemus, C. Hernández-Rodríguez, J. Méndez-Ramos, V.D. Rodríguez,