What Does PLY Stand For?

PLY stands for Photoluminescence Yield

Photoluminescence Yield (PLY) is a quantitative measure of the efficiency with which a material absorbs photons and subsequently re-emits them as light. It is defined as the ratio of the number of photons emitted to the number of photons absorbed, providing insights into the optical properties and electronic behavior of materials. PLY is a critical parameter in fields such as materials science, photonics, and semiconductor technology, where it helps evaluate the performance of luminescent materials and devices.