JASCO | Phosphorescence Measurement
Why used phosphorescence measurement?
Why used phosphorescence measurement?
→ Phosphorescence materials are frequently used to increase the quantum efficiency of materials since the radiative decay from both the triplet and singlet states contributes to the light emission.
Since typically the lifetime of phosphorescence is long, thermal deactivation occurs by oxygen quenching, solvent movement, and intermolecular collision and the phosphorescence cannot be observed at room temperature.
The sample is therefore cooled to liquid nitrogen temperature to slow down the relaxation process.
→ Used to measure phosphorescence spectra and phosphorescence lifetimes by cooling a sample to -77 Kelvin.

→ Liquid sample holding stick used with the PMU-130 for liquid phosphorescence measurements.
→ Powder sample holding stick used with the PMU-130 for powder phosphorescence measurements.

→ Solid sample holding stick used with the PMU-130 for solid phosphorescence measurements.