<p>A thin film electro-luminescence material comprising an alkaline earth metal thiogallate represented by the following compositional formula: (M1S)a(Ga2S3)b:RE wherein M1 is Sr or Ba; RE is a lanthanoid element; and a and b are integers which are different from each other or comprising an alkaline earth metal thioaluminate represented by the following compositional formula: (M2S)c(Al2S3)dRE wherein M2 is Ca, Sr or Ba; RE is a lanthanoid element; and c and d are integers which may be identical with or different from each other, and a thin film electro-luminescence device comprising said thin film electro-luminescence material as a luminescence layer. <IMAGE></p>
