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Título: | Characterization of optical and electrical properties of CdTe:Yb co-doped with Ge |
Autor: | Franc, J.; Horodysky, P.; Grill, R.; Kubát, J.; Saucedo, E.; Sochinskii, N. V. | Fecha de publicación: | 2006 | Editor: | Elsevier | Citación: | Journal of Crystal Growth 286: 384-388 (2006) | Resumen: | The defect structure of CdTe doped with Yb and co-doped with Ge was investigated by a set of optical (photoluminescence, absorption, photoconductivity), galvanomagnetic and thermoelectric methods. The results can be explained by a model, in which Yb acts as a deep donor with the energy level at EV+0.3 eV corresponding to the Yb2+/Yb3+ electronic transition. Introduction of Yb with concentration 1019 cm-3 in the melt results in a decrease of electrically and optically active acceptor defects in the as-grown crystals and causes a decrease of electrical resistivity of CdTe:Ge. A line at 1.585 eV related to an exciton bound to a complex of Yb and Cd vacancy was observed both in photoluminescence and photoconductivity spectra. © 2005 Elsevier B.V. Al l rights reserved. | URI: | http://hdl.handle.net/10261/50497 | DOI: | 10.1016/j.jcrysgro.2005.10.022 | Identificadores: | doi: 10.1016/j.jcrysgro.2005.10.022 issn: 0022-0248 |
Aparece en las colecciones: | (IMN-CNM) Artículos |
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