The percentage of light absorbed and emitted by phosphorescent or fluorescent materials can vary depending on the specific material and its properties. The absorption and emission characteristics are typically described by their quantum yield, which represents the efficiency of the material in absorbing and emitting light.
Quantum yield is expressed as a value between 0 and 1, or as a percentage between 0% and 100%. A higher quantum yield indicates a higher efficiency in absorbing and emitting light. However, it's important to note that the quantum yield can differ significantly between different materials and even within different formulations of the same material.
For example, some fluorescent materials can have quantum yields ranging from 20% to 90% or even higher, meaning they absorb and emit a substantial portion of the incident light. However, phosphorescent materials often have lower quantum yields, typically ranging from a few percent to around 50%.
It's worth mentioning that these values are approximate and can vary depending on the specific chemical composition, structure, and manufacturing processes of the phosphorescent or fluorescent materials used. If you require precise information about a particular material, it is best to consult the technical specifications or scientific literature specific to that material.