Temperature Dependence of the Band-Gap Width of $ Mn_{1.5} %$ AgIn_{8.0} %$ S_{14} $ Single Crystals

$ Mn_{1.5} %$ AgIn_{8.0} %$ S_{14} $ single crystals were grown by Bridgman directed melt crystallization. Their composition and crystal structure were determined. Single crystals crystallized in the cubic spinel structure with lattice constant a = 10.765 ± 0.005 Å. The band-gap width of $ Mn_{1.5}...
Ausführliche Beschreibung

$ Mn_{1.5} %$ AgIn_{8.0} %$ S_{14} $ single crystals were grown by Bridgman directed melt crystallization. Their composition and crystal structure were determined. Single crystals crystallized in the cubic spinel structure with lattice constant a = 10.765 ± 0.005 Å. The band-gap width of $ Mn_{1.5} %$ AgIn_{8.0} %$ S_{14} $ single crystals was estimated from transmission spectra near the intrinsic absorption edge in the temperature range 10–320 K and decreased with increasing temperature. A function approximating this dependence was obtained. Ausführliche Beschreibung