Used in specialized UV optics. Also used as a crystal in X-ray spectrometry. Widely employed in PLED (Polymer Light Emitting Diodes) and OLED (Organic Light Emitting Diodes) as a coupling layer to enhance electron injection. Found in liquid-fluoride nuclear reactors. Used to record ionizing radiation in thermoluminescent dosimeters. Component of molten salts.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.