Determination of ratiative and non-radiative excitation decay rates

Unit: Faculty of Physics
Keywords: Radiative decay, non-radiative decay, fluorescence, phosphorescence, organic compounds, organic electronics, OLED, solar cells, sensors

Evaluation of fluorescence and phosphorescence radiative and non-radiative decay rates of organic solutions and thin films, using the determined luminescence decay transients and quantum yields. 

With sample preparation. One sample per measurement. Sample materials should have their absorption and fluorescence in the range from 196 nm to 957 nm. The samples can be excited by the following wavelengths: 280 nm, 330 nm, 375 nm and 450 nm. 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). Time resolution - 70 ps. The system allows to select the excitation wavelength to additionally integrate the delay line for the measurements of long decay transients.

Application. The evaluation of the fluorescence and phosphorescence radiative and non-radiative decay rates will make it possible 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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