Identification of Ag-acceptors in $^{111}Ag^{111}Cd$ doped ZnTe and CdTe

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Nominally undoped ZnTe and CdTe crystals were implanted with radioactive /sup 111/Ag, which decays to /sup 111/Cd, and investigated by photoluminescence spectroscopy (PL). In ZnTe, the PL lines caused by an acceptor level at 121 meV are observed: the principal bound exciton (PBE) line, the donor-acc...

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Autores principales: Hamann, J, Burchard, A, Deicher, M, Filz, T, Lany, S, Ostheimer, V, Strasser, F, Wolf, H, Wichert, T
Lenguaje:eng
Publicado: 2000
Materias:
Condensed Matter
Acceso en línea:https://dx.doi.org/10.1016/S0022-0248(00)00083-X
http://cds.cern.ch/record/471525
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author Hamann, J
Burchard, A
Deicher, M
Filz, T
Lany, S
Ostheimer, V
Strasser, F
Wolf, H
Wichert, T
author_facet Hamann, J
Burchard, A
Deicher, M
Filz, T
Lany, S
Ostheimer, V
Strasser, F
Wolf, H
Wichert, T
author_sort Hamann, J
collection CERN
description Nominally undoped ZnTe and CdTe crystals were implanted with radioactive /sup 111/Ag, which decays to /sup 111/Cd, and investigated by photoluminescence spectroscopy (PL). In ZnTe, the PL lines caused by an acceptor level at 121 meV are observed: the principal bound exciton (PBE) line, the donor-acceptor pair (DAP) band, and the two-hole transition lines. In CdTe, the PBE line and the DAP band that correspond to an acceptor level at 108 meV appear. Since the intensities of all these PL lines decrease in good agreement with the half-life of /sup 111/Ag of 178.8 h, both acceptor levels are concluded to be associated with defects containing a single Ag atom. Therefore, the earlier assignments to substitutional Ag on Zn- and Cd-lattice sites in the respective II-VI semiconductors are confirmed. The assignments in the literature of the S/sub 1/, S /sub 2/, and S/sub 3/ lines in ZnTe and the X/sub 1//sup Ag/, X/sub 2 //sup Ag//C/sub 1//sup Ag/, and C/sub 2//sup Ag/ lines in CdTe to Ag- related defect complexes are not confirmed. (16 refs).
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language eng
publishDate 2000
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spelling cern-4715252019-09-30T06:29:59Zdoi:10.1016/S0022-0248(00)00083-Xhttp://cds.cern.ch/record/471525engHamann, JBurchard, ADeicher, MFilz, TLany, SOstheimer, VStrasser, FWolf, HWichert, TIdentification of Ag-acceptors in $^{111}Ag^{111}Cd$ doped ZnTe and CdTeCondensed MatterNominally undoped ZnTe and CdTe crystals were implanted with radioactive /sup 111/Ag, which decays to /sup 111/Cd, and investigated by photoluminescence spectroscopy (PL). In ZnTe, the PL lines caused by an acceptor level at 121 meV are observed: the principal bound exciton (PBE) line, the donor-acceptor pair (DAP) band, and the two-hole transition lines. In CdTe, the PBE line and the DAP band that correspond to an acceptor level at 108 meV appear. Since the intensities of all these PL lines decrease in good agreement with the half-life of /sup 111/Ag of 178.8 h, both acceptor levels are concluded to be associated with defects containing a single Ag atom. Therefore, the earlier assignments to substitutional Ag on Zn- and Cd-lattice sites in the respective II-VI semiconductors are confirmed. The assignments in the literature of the S/sub 1/, S /sub 2/, and S/sub 3/ lines in ZnTe and the X/sub 1//sup Ag/, X/sub 2 //sup Ag//C/sub 1//sup Ag/, and C/sub 2//sup Ag/ lines in CdTe to Ag- related defect complexes are not confirmed. (16 refs).oai:cds.cern.ch:4715252000
spellingShingle Condensed Matter
Hamann, J
Burchard, A
Deicher, M
Filz, T
Lany, S
Ostheimer, V
Strasser, F
Wolf, H
Wichert, T
Identification of Ag-acceptors in $^{111}Ag^{111}Cd$ doped ZnTe and CdTe
title Identification of Ag-acceptors in $^{111}Ag^{111}Cd$ doped ZnTe and CdTe
title_full Identification of Ag-acceptors in $^{111}Ag^{111}Cd$ doped ZnTe and CdTe
title_fullStr Identification of Ag-acceptors in $^{111}Ag^{111}Cd$ doped ZnTe and CdTe
title_full_unstemmed Identification of Ag-acceptors in $^{111}Ag^{111}Cd$ doped ZnTe and CdTe
title_short Identification of Ag-acceptors in $^{111}Ag^{111}Cd$ doped ZnTe and CdTe
title_sort identification of ag-acceptors in $^{111}ag^{111}cd$ doped znte and cdte
topic Condensed Matter
url https://dx.doi.org/10.1016/S0022-0248(00)00083-X
http://cds.cern.ch/record/471525
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