Figure 4: Scheme of the proposed energy levels and the optical transitions. | Nature Communications

Figure 4: Scheme of the proposed energy levels and the optical transitions.

From: Single-molecule electroluminescence and photoluminescence of polyfluorene unveils the photophysics behind the green emission band

Figure 4

(a) PL. (b) EL. In the EL scheme, the neutral ground-state dimer is stabilized by the injection of a charge (for example, a hole h+). Recombination with the opposite charge (an electron e−) leads to the population of a neutral dimer excited state in a configuration corresponding initially to the mixed dimer ground state before recombination.

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