Fig. 3: The Jablonski diagram of interfacial energy transfer. | Nature Communications

Fig. 3: The Jablonski diagram of interfacial energy transfer.

From: High-performance near-infrared OLEDs maximized at 925 nm and 1022 nm through interfacial energy transfer

Fig. 3

This demonstrates an overview of the role of interfacial energy transfer dynamic processes underlying NIR OLED functionality. The solid sky-blue pathway represents the process of interfacial energy transfer, capable of facilitating FRET. Within this framework, the S0 and S1 states denote the ground and excited states, respectively, in the singlet manifold, while the T1 state represents the triplet state. Note that T1 → S1’ FRET is viable because the T1 → S0 transition is virtually allowed for the Pt (II) complex due to its strong spin-orbit coupling. The diagram also outlines alternative pathways with dashed lines, where charge transfer (CT) and charge transfer-triplet (CT-T) states are included, alongside the charge separation (CS) state, which represents subsidiary processes occurring with a rather small probability.

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