ErAs5

ErAs is a rare-earth arsenide ceramic compound combining erbium (Er) with arsenic (As), belonging to the family of intermetallic and compound semiconductors. While ErAs remains primarily a research material, it is of significant interest in thermoelectric and optoelectronic applications due to its potential for high-temperature operation and thermal transport properties; the material family shows promise for infrared detectors, thermal-to-electric energy conversion, and integrated photonic devices where rare-earth compounds can provide unique band structures unavailable in conventional semiconductors.