Luminescent Color Evaluation for Fluorescent Materials

Download PDF August 23, 2022


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Fluorescence analysis is widely used in analytical chemistry and in biochemistry as a primary techniques for high sensitivity quantitative measurement and research for the excitation state of samples.

Recently, it has been used for research in the field of photoelectronics such as an organic EL, a plasma display and a luminous body for white LED. It is expected that the efficiency of the luminous body and its color are evaluated quantitatively.

A light source such as the sun or an artificial light source illuminates an object and the color of the object is normally determined from the tristimulus value of its reflectance light. The color of the luminescent body is obtained by the tristimulus value from the energy distribution of the illuminating source. The tristimulus value is the value corresponding to the red, green and blue colors which are recognized as color.

After fluorescent spectral measurements of solid or powder fluorescent materials have been acquired, the luminescent color analysis program is used to calculate the tristimulus value XYZ, chromaticity coordinates xy, uv, u’v’, dominant wavelength, stimulus purity, correlated color temperature and color rendering index.

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About the Author

Leah Pandiscia received her PhD from Drexel University where she studied Biophysical Chemistry. She is a Spectroscopy Applications Scientist.