Monitoring the phase evolution of Cu(In,Ga)Se2 by different Se flux via in-situ XRD
Corresponding Author
Setareh Zahedi-Azad
Martin-Luther-University Halle-Wittenberg, Fachgruppe Photovoltaik, 06120 Halle, Germany
Corresponding author: e-mail [email protected], Phone: +49-345-5525494, Fax: +49-345-5527354Search for more papers by this authorEnrico Jarzembowski
Martin-Luther-University Halle-Wittenberg, Fachgruppe Photovoltaik, 06120 Halle, Germany
Search for more papers by this authorStefan Hartnauer
Martin-Luther-University Halle-Wittenberg, Fachgruppe Photovoltaik, 06120 Halle, Germany
Search for more papers by this authorLeonard Wägele
Martin-Luther-University Halle-Wittenberg, Fachgruppe Photovoltaik, 06120 Halle, Germany
Search for more papers by this authorDieter Greiner
Helmholtz Zentrum Berlin für Materialen und Energie, 14109 Berlin, Germany
Search for more papers by this authorRoland Scheer
Martin-Luther-University Halle-Wittenberg, Fachgruppe Photovoltaik, 06120 Halle, Germany
Search for more papers by this authorCorresponding Author
Setareh Zahedi-Azad
Martin-Luther-University Halle-Wittenberg, Fachgruppe Photovoltaik, 06120 Halle, Germany
Corresponding author: e-mail [email protected], Phone: +49-345-5525494, Fax: +49-345-5527354Search for more papers by this authorEnrico Jarzembowski
Martin-Luther-University Halle-Wittenberg, Fachgruppe Photovoltaik, 06120 Halle, Germany
Search for more papers by this authorStefan Hartnauer
Martin-Luther-University Halle-Wittenberg, Fachgruppe Photovoltaik, 06120 Halle, Germany
Search for more papers by this authorLeonard Wägele
Martin-Luther-University Halle-Wittenberg, Fachgruppe Photovoltaik, 06120 Halle, Germany
Search for more papers by this authorDieter Greiner
Helmholtz Zentrum Berlin für Materialen und Energie, 14109 Berlin, Germany
Search for more papers by this authorRoland Scheer
Martin-Luther-University Halle-Wittenberg, Fachgruppe Photovoltaik, 06120 Halle, Germany
Search for more papers by this authorAbstract
Through in-situ X-ray diffraction, we examined the phase evolution of Cu(In,Ga)Se2 films deposited by three stage co-evaporation with regard to Se flux and substrate temperature. The deposition method is based on the sequence of Cu-poor/Cu-rich/Cu-poor, which is beneficial for improving the crystal quality as well as the conversi-on efficiency. We find that while the Se flux during the first stage determines the final orientation, the substrate temperature moderates the degree of the preferred orientation. The orientation of the intermediate Cu2Se phase follows the preferred orientation of the CIGSe film, indicating an epitaxial relationship between the two phases.
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