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Figure 1

From: Solution-Processed Phosphorescent Organic Light-Emitting Diodes with Ultralow Driving Voltage and Very High Power Efficiency

Figure 1

Device operating mechanism and molecular structures.

(a) The proposed device operating mechanism including I: effective hole injection and transporting; II: effective electron injection and transporting; III: barrier-free hole-electron recombination for the formation of exciplex; and IV: energy transfer from interfacial exciplex to phosphor; (b) Molecular structures of functional materials used.

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