ABSTRACT
The phase equilibriums in the AgInS2 – CuInS2 system were investigated by means of X-ray diffraction and differential thermal analysis. The T-x phase diagram of this system was constructed and it was discovered the formation of solid solutions in the complete range of compositions. The AgInS2 and CuInS2 ternary compounds and the AgxCu1–xInS2 solid solutions were grown by two zone horizontal method with the following directed crystallization of melt. The composition dependencies of band gap have nonlinear behaviour and have been analytically expressed at 77 and 293K for the E ⊥ c and E ‖ c direction of polarization.
