Untersuchung der Synthesebedingungen und einiger Eigenschaften von Verbindungen des Typs A B2C4

Abstract

CuGa2Se4 was obtained by melting equimol. amts. of the elements in a quartz ampul at about 0.001 mm Hg vacuum and 1100 ± 20° for 5 h. The Cu selenogallate obtained m. 1070° and is sol. in concd. HN03 but insol. in 10 and 25 % HN03 soln. and other acids. CuGa2Se4 crystals are of the ZnS type with lattice parameter 5.8O A and CuGa2Se4 is a p-type semiconductor with forbidden band 0.63 eV.