Determination of singlet and triplet energy levels

Determination of singlet and triplet energy levels

Sukurta: 26 November 2018
Unit: Faculty of Physics
Keywords: Singlet, triplet, energy level, fluorescence, phosphorescence, spectrum, Nd:YAG, picosecond laser, organic compounds, organic electronics, OLED, solar cells, sensors

Determination of singlet and triplet energy levels from fluorescence and phosphorescence spectra.

Liquid nitrogen is used to cool down samples for triplet energy levels determination.
For a specific reason there is possibility to cool down samples down to liquid helium temperature.
For the excitation of the samples picosecond Nd:YAG laser is used.
Spectral range 196 nm – 970 nm.
Spectral resolution ≤2 nm.
Pixels of CCD matrix - 1024.
Dark current at 20 ms exposure: 75 electrons.
Light is collected through optical cable.
Exposure interval: 0.02 – 30 s. 

Application. Characterization of singlet and triplet energy levels of new organic compounds will enable to evaluate their potential for applications in organic electronic devices (organic light emitting diodes, organic solar cells, sensors).

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