Preparation of CaGa_2S_4 : Ce thin films for blue emitting TFEL device.

Abstract

Ce-doped calcium thiogallate (CaGa_2S_4 : Ce) thin films for blue-emitting thin film electroluminescent devices have been prepared by multi-source deposition technique using Ca metal, Ga_2S_3 and CeCl_3 source. The thin film consisted of CaGa_2S_4 and GaS was prepared at a substrate temperature of 550℃, a flux ratio, Ga_2S_3/Ca, of 70.