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.

PMU-130 | Liquid Nitrogen Cooling Unit
Used to measure phosphorescence spectra and phosphorescence lifetimes by cooling a sample to -77 Kelvin.

LPH-140 | Phosphorescence Measurement Cell Kit for Liquid Samples
Liquid sample holding stick used with the PMU-130 for liquid phosphorescence measurements.

PPH-150 | Phosphorescence Measurement Cell Kit for Powder Samples
Powder sample holding stick used with the PMU-130 for powder phosphorescence measurements.

CPH-160 | Phosphorescence Measurement Cell Kit for Solid Samples
Solid sample holding stick used with the PMU-130 for solid phosphorescence measurements.