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Optical properties of CuCdTeO thin films sputtered from CdTe-CuO composite targets
Linköping University, Department of Physics, Chemistry and Biology, Applied Optics . Linköping University, The Institute of Technology. Cinvestav-IPN, Unidad Querétaro, Mexico.
Cinvestav-IPN, Unidad Querétaro, Mexico.
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, The Institute of Technology.ORCID iD: 0000-0002-7500-9777
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, The Institute of Technology.ORCID iD: 0000-0001-9140-6724
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2014 (English)In: Thin Solid Films, ISSN 0040-6090, E-ISSN 1879-2731, Vol. 571, 706-711 p.Article in journal (Refereed) Published
Abstract [en]

The effective complex dielectric function (ε) of Cu and O containing CdTe thin films is reported in the spectral range of 0.05 to 6 eV. The films were fabricated by rf sputtering from targets comprised by a mixture of CdTe and CuO powders with nominal Cu and O concentrations in the range of 2–10 at.%. Low concentration levels improved the crystalline quality of the films. Spectroscopic ellipsometry and transmittance measurements were used to determine ε. The critical point energies E1, E11, and E2 of CdTe are red-shifted with the incorporation of Cu and O. Also, an absorption band is developed in the infrared range which is associated with a mixture of CdTe and low resistivity phases Cu2 − xTe according to an effective medium analysis. The elemental distribution of the films was mapped by energy dispersive X-ray spectroscopy using scanning transmission electron microscopy.

Place, publisher, year, edition, pages
Elsevier, 2014. Vol. 571, 706-711 p.
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-112740DOI: 10.1016/j.tsf.2014.01.042ISI: 000346055200070OAI: oai:DiVA.org:liu-112740DiVA: diva2:770521
Conference
6th International Conference on Spectroscopic Ellipsometry (ICSE-VI), May 26–31, 2013, Kyoto, Japan
Available from: 2014-12-10 Created: 2014-12-10 Last updated: 2017-12-05Bibliographically approved

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Mendoza, ArturoKarlsson, LindaPersson, Per

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