The work presented in this thesis is a comparative study of singlet-triplet exciton annihilation in in vitro chlorophyll, in chlorophyll bound to chloroplast membranes, and to proteins isolated from chloroplast membranes.;Fluorescence quenching curves, i.e., plots of the relative fluorescence yield as...
Direct evidence for the singlet–triplet exciton annihilation in anthracene crystals. Phys. Status Solidi B 85, 45–49 (1978). Article CAS Google Scholar Heisel, F., Miehe, J. A., Sipp, B. & Schott, M. Experimental evidence for the influence of excition interactions on the temporal ...
20,25. The role of exciton-exciton and exciton-charge annihilation effects were ruled out by transient PL measurements on electrically-driven OLEDs, leading to the conclusion that the charge-trapping mechanism for EL must be improved to advance the performance of radical-based devices25...
Recently, both experimental and theoretical evidence indicate that the electrically-generated singlet and triplet exciton formation ratio (rS/T) in conjugated polymers can exceed the 1:3 spin statistics limit. However, the extent that the electric field influences rS/T is in controversy. By measuring...
Y. et al. Efficient delayed fluorescence via triplet-triplet annihilation for deep-blue electroluminescence. Chem. Commun. 50, 6869–6871 (2014). 10. Congreve, D. N. et al. External quantum efficiency above 100% in a singlet-exciton-fission-based organic photovoltaic cell. Science 340, 334–...
Tuneable Singlet Exciton Fission and Triplet–Triplet Annihilation in an Orthogonal Pentacene Dimer Fast and highly efficient intramolecular singlet exciton fission in a pentacene dimer, consisting of two covalently attached, nearly orthogonal pentacene u... S Lukman,AJ Musser,K Chen,... - 《Advanced...
[29]C. E. Swenberg, “Theory of triplet exciton annihilation in polyacene crystals,” The Journal of Chemical Physics, vol. 51, no. 5, pp. 1753–1764, 1969. [30]D. Y. Kondakov, T. D. Pawlik, T. K. Hatwar, and J. P. Spindler, “Triplet annihilation exceeding spin statistical ...
Triplet Exciton ControlRoll-Off EfficacyIn this work, efficient blue fluorescent organic light-emitting diodes (FOLEDs) could be demonstrated by using triplet exciton control (TEC) which means reduced singlet-triplet annihilation (STA) in emitting layer (EML). TEC material, which can be reduced to...
The experimental results (and associated kinetic modeling) demonstrate that (i) triplet exciton pairs undergo efficient triplet-triplet annihilation on the ≪30 μs time scale, (ii) triplet-triplet annihilation is the dominant mechanism for triplet decay at incident excitation powers ≥50 W/cm2, ...
Singlet Fission and Triplet Exciton Dynamics in Rubrene/Fullerene Heterojunctions: Implications for Electroluminescenceelectroluminescencerubrenesinglet fissiontriplet energy transfertriplet–triplet annihilationThe role of triplet excitons in rubrene/C60 heterojunctions is investigated through detailed spectroscopic ...