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Updated: Jun 26, 2026

Absolute Quantum Yield Measurement of Powder Samples
Published on: May 12, 2012
Measurement method for photoluminescent quantum yields of fluorescent organic dyes in polymethyl methacrylate for
1School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK. lrw1@hw.ac.uk
Abstract:
A method for measuring the photoluminescent quantum yields (PLQY) of luminescent organic dyes is presented. The self-absorption probability calculated at different dye concentrations is used to determine the absolute quantum yield from the observed values. The results for a range of commercially available dyes show high quantum yields, even at high concentrations, and an absence of quenching. The PLQY of several dye mixtures are also presented. The results indicate an absence of any reduction of PLQY in a dye mixture as compared with the individual PLQY of the dyes.

