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Ultraweak spectrally resolved thermoluminescence in polymers
Authors:Ewa Mandowska  Arkadiusz Mandowski  Józef Świątek
Institution:Institute of Physics, Pedagogical University, ul. Armii Krajowej 13/15, 42-200 Częstochowa, Poland
Abstract:Spectrally resolved thermoluminescence (TL) measurements provide a lot of information concerning trapping and recombination states in various dielectric materials. As long-lived luminescence is typically weak, this technique requires a very sensitive apparatus. This paper describes the measurement system that is used for studying spectrally resolved TL and phosphorescence decay in polymers. Exemplary investigations are presented for poly(N-vinylcarbazole) (PVK) thin films. The obtained spectra clearly indicate the influence of solvents (dioxane, chlorobenzene) and excitation wavelengths on TL in PVK samples.
Keywords:luminescence  phosphorescence  spectrally resolved thermoluminescence (TL)  poly(N-vinylcarbazole) (PVK)  thin films
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