Reaction pathway to Cu2ZnSnSe4 formation in CdI2

We investigated various possible chemical interactions between individual precursor compounds (ZnSe, SnSe, and CuSe) and CdI2 as a flux material used in the CZTSe monograin powder synthesis–growth process in closed vacuum ampoules. The processes occurring in these mixtures were detected by the diffe...

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Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2018-10, Vol.134 (1), p.409-421
Main Authors: Leinemann, Inga, Godswill Chimezie Nkwusi, Timmo, Kristi, Volobujeva, Olga, Danilson, Mati, Raudoja, Jaan, Kaljuvee, Tiit, Traksmaa, Rainer, Altosaar, Mare, Meissner, Dieter
Format: Article
Language:English
Subjects:
Copper selenides
Copper zinc tin selenide
Differential thermal analysis
Energy dispersive X ray spectroscopy
Mass spectrometry
Organic chemistry
Phase transitions
Raman spectroscopy
Scanning electron microscopy
Thermogravimetric analysis
X-ray diffraction
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Summary:We investigated various possible chemical interactions between individual precursor compounds (ZnSe, SnSe, and CuSe) and CdI2 as a flux material used in the CZTSe monograin powder synthesis–growth process in closed vacuum ampoules. The processes occurring in these mixtures were detected by the differential thermal analysis method. The phase changes in these processes were determined using X-ray diffraction and Raman spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, thermogravimetric analysis, and mass spectrometry. The analyses showed that molten CdI2 was chemically active, forming Zn1−xCdxSe in the CdI2–ZnSe mixture by a chemical dissolution reaction; CdSe, SnI2 and SnI4 formed in the CdI2–SnSe mixtures and CdSe; and CuI formed in the CdI2–CuSe mixtures by exchange reactions.
ISSN:1388-6150
1588-2926
DOI:10.1007/s10973-018-7102-5