Related Experiment Video
Updated: Apr 22, 2026

Luminescence Resonance Energy Transfer to Study Conformational Changes in Membrane Proteins Expressed in Mammalian Cells
Published on: September 16, 2014
Modeling and assessment of long afterglow decay curves
Chi-Yang Tsai1, Jeng-Wen Lin2, Yih-Ping Huang2
1Graduate Institute of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan ; Department of Dentistry, Taipei Medical University Hospital, Taipei 11031, Taiwan.
Abstract:
Multiple exponential equations have been successfully fitted to experimental long afterglow decay curve data for some phosphor materials by previous researchers. The calculated decay constants in such equations are used to assess the phosphorescence characteristics of an object. This study generates decay constants from experimental test data and from existing literature for comparison. It shows that the decay constants of an object may not be invariant and that they are dependent on phosphor material, temperature, irradiation intensity, sample thickness, and phosphor density for samples. In addition, the use of different numbers of exponential components in interpretation leads to different numerical results for decay constants. The relationship between the calculated decay constants and the afterglow characteristics of an object is studied and discussed in this paper. The appearance of the luminescence intensity is less correlated to the decay constants than to the time-invariant constants in an equation.
Related Concept Videos
Variables Affecting Phosphorescence and Fluorescence
Radioactive Decay and Radiometric Dating
Resting Potential Decay
At rest, the K+ is the main ion that moves across the membrane...
Resting Potential Decay
Photoluminescence: Applications
Photoluminescence: Fluorescence and Phosphorescence
A pair of electrons in a...

