Fluorescence and phosphorescence quantum yield determination using integrating sphere and by comparing with etalon material methods

Unit: Faculty of Physics
Keywords: Organic compounds, solutions, layers, fluorescence, phosphorescence, quantum yield, integrating sphere, comparing method, organic electronics, OLED, solar cells, sensors

Fluorescence and phosphorescence quantum yield determination.

Fluorescent or phosphorescent materials should have their absorption and fluorescence in the range from 196 nm to 957 nm. The quantum yield is determined using two methods: the integrating sphere method and by comparing to the quantum yield of an etalon material (the latter is only suitable for solutions). The following etalon materials are used: quinine sulphate, fluorescein, sulforhodamine 101, Nile blue perchlorate, 5-carboxitetramethylrhodamine.
One sample per measurement.
The materials must exhibit efficient absorbance in the spectral range from 196 nm to 957 nm and good solubility in common organic solvents (acetone, tetrahydrofurane, toluene, dimethylsulphoxide, dimethylformamide, ethanol, methanol and others).
Accuracy: 5%. 

Application. Fluorescence and phosphorescence quantum yield measurements will enable to evaluate their potential for applications in organic modern electronic devices (organic light emitting diodes, organic solar cells, sensors).

Contacts: Dr. Karolis Kazlauskas, tel. +370 600 34126,

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