W4 Se8

W4Se8 is a layered transition metal diselenide compound belonging to the family of two-dimensional semiconductors and van der Waals materials. This is primarily a research material studied for its potential in optoelectronic and electronic device applications, particularly in contexts where ultrathin or few-layer semiconductors offer advantages over conventional bulk materials. The compound's layered structure and tunable bandgap make it of interest for next-generation photovoltaic devices, photodetectors, and field-effect transistors, though it remains largely in the experimental phase without widespread commercial deployment.