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- W2048659099 abstract "Photoluminescence spectral features of α-sexithiophene (α-T6) thin films have been demonstrated to be directly linked to film morphology and temperature. Ultra-thin films at low temperature show vibronic resolved photoluminescence (PL) spectra typical of intrinsic excitonic emission. As film thickness increases, PL spectra show additional emission at low energy, which is attributed to trap states. The nature of the trap states is to date elusive as well as the non-radiative mechanism involving exciton and trap states. Here, we report a phenomenological model that allows to determine the photophysical rate constants of the excitonic and trap state transitions and the density of traps in α-T6 thin films. Our model accounts for the thickness dependence of α-T6 films optical emission and is well in agreement with the observed variation of photoluminescence as a function of temperature in the range of 4–300 K." @default.
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- W2048659099 date "2003-10-01" @default.
- W2048659099 modified "2023-09-25" @default.
- W2048659099 title "Modeling of the photophysical properties of α-sexithiophene thin films" @default.
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- W2048659099 doi "https://doi.org/10.1016/s0379-6779(03)00291-1" @default.
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