Recent Developments in Infrared Phosphors

摘要

Infrared (IR) phosphors are being used as infrared detectors in various applications. The true meaning of phosphor is "light bearer." These phosphors can be classified into two categories viz., up-converting and stimulable phosphors. Up-converting phosphors, also known as anti-Stokes phosphors absorb two or more IR photons and emit a single photon in the visible region. There are a number of fascinating applications such as lasers, IR quantum counters, lighting, displays, solar panels, security gadgets, biological nano labels, and medical applications. Some of the up-converting phosphors available in the literature are shown in Table I.