Which has a greater conversion efficiency, rare earth phosphors or traditional phosphors?

Rare earth phosphors demonstrate greater conversion efficiency compared to traditional phosphors due to their unique properties. Rare earth elements, such as europium and terbium, possess specific electronic structures that allow them to absorb and emit light more effectively. This results in a higher percentage of the absorbed energy being converted into visible light, making them especially efficient in applications such as display technologies and imaging systems.

In contrast, traditional phosphors generally have broader excitation spectra and lower quantum yields. As a result, they may not convert energy to visible light as efficiently as rare earth phosphors, leading to reduced performance in applications where high brightness and efficiency are essential. The advancements in the composition and characteristics of rare earth phosphors have positioned them as a superior choice for modern imaging technologies that require optimal light output and energy conversion.