Fig. 2: Mechanism and driving methods of full-color-tunable LED. | Nature Communications

Fig. 2: Mechanism and driving methods of full-color-tunable LED.

From: Quantum-dot and organic hybrid tandem light-emitting diodes with multi-functionality of full-color-tunability and white-light-emission

Fig. 2

a Schematic diagram of the charge injection and recombination trajectory of the Y-QLED. The recombination zone is gradually migrated from R-QDs to G-QDs when the driving voltage is increased, and thus the emission color of Y-QLED can be controlled by the voltage. b The CIE chart, CIE coordinates, and photos; c the AC driving signals; and d the emission spectra of a color-tunable device that emits different colors. The color can be continuously tuned from (I) R to G, (II) B to R, (III) B to O, and (IV) B to G.

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