Yb4 O4 F4

Yb₄O₄F₄ is an experimental rare-earth oxyhalide semiconductor compound containing ytterbium, oxygen, and fluorine. This material belongs to the broader family of rare-earth fluorides and oxides, which are of significant research interest for photonic and electronic applications due to their unique optical and structural properties. The compound remains largely in the research phase, with potential applications in specialized optoelectronic devices, luminescent materials, or high-temperature semiconductor applications where rare-earth dopants offer advantages over conventional semiconductors.