Answers are grounded in this paper and cite their sources.
The singlet to triplet exciton formation ratio in electron-hole recombination is predicted theoretically to be higher than 1/3 for conjugated polymers doped with magnetic transition-metal complexes. The intersystem crossing rate between the nearly degenerate second lowest triplet and singlet excitons is increased by the exchange coupling between the π electrons in conjugated polymers and the magnetic moment of the metal ions in the complexes. A large fraction of the second lowest triplet excitons can be transformed into singlet because of the slow relaxation to the lowest triplet exciton. The net result is the enhancement of the singlet exciton formation ratio. The electroluminescence quantum efficiency can be raised significantly within a range of optimal doping density.
No takes yet. Share an insight, caveat, or question.
Chen et al. (2003) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: