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- W2032203546 endingPage "295101" @default.
- W2032203546 startingPage "295101" @default.
- W2032203546 abstract "Two electroluminescent polymer matrices poly( N -vinylcarbazole) (PVK) and PVK with 40 wt% of 2- tert -butylphenyl-5-biphenyl–1,3,4-oxadiazole (PBD) were studied using spectrally resolved thermoluminescence (SRTL) in the temperature range 15–325 K. The comparison of the SRTL results with the electroluminescence (EL) spectra has allowed identification of the localized (trapping) sites and the radiative recombination centres present in the investigated matrices. In the neat PVK films deep traps with a depth about 200 meV, related to triplet excimers dominate, while in the PVK–PBD (40 wt%) blend films the traps that are related to triplet exciplexes formed by the carbazole groups and the PBD molecules dominate. Depth of the traps in the PVK–PBD blend is somewhat lower than that in the neat PVK. An analysis of the EL spectra shows that in the PVK and in the PVK–PBD blend the dominant radiative centres are singlet excimers and singlet exciplexes, respectively. However, in the neat PVK some contributions of the triplet monomer and the triplet excimer states in the EL were also detected." @default.
- W2032203546 created "2016-06-24" @default.
- W2032203546 creator A5063487127 @default.
- W2032203546 creator A5067414668 @default.
- W2032203546 date "2010-07-07" @default.
- W2032203546 modified "2023-10-01" @default.
- W2032203546 title "The nature of trapping sites and recombination centres in PVK and PVK–PBD electroluminescent matrices seen by spectrally resolved thermoluminescence" @default.
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- W2032203546 doi "https://doi.org/10.1088/0022-3727/43/29/295101" @default.
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