Point defects in BaSi2 thin films for photovoltaic applications studied by positron annihilation spectroscopy

Barium di-silicide (BaSi2) is a very promising absorber material for high-efficiency thin-film solar cells, due to its suitable bandgap, high light absorption coefficient, and long minority-carrier lifetime. In this study, we compare the nanostructure, layer composition, and point defects of BaSi2 t...

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Veröffentlicht in:	Journal of applied physics 2020-02, Vol.127 (8)
Hauptverfasser:	Montes, A., Eijt, S. W. H., Tian, Y., Gram, R., Schut, H., Suemasu, T., Usami, N., Zeman, M., Serra, J., Isabella, O.
Format:	Artikel
Sprache:	eng
Schlagworte:	Absorptivity Annealing Applied physics Barium compounds Carrier lifetime Crystal defects Depth profiling Disilicides Electromagnetic absorption Lattice vacancies Molecular beam epitaxy Oxidation Photovoltaic cells Point defects Positron annihilation Radio frequency Raman spectroscopy Silicides Silicon Solar cells Spectroscopic analysis Spectrum analysis Thin films Vacancies
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