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P‐9.8: Voltage Controllable Multicolor Light‐emitting Diodes

In this work, we demonstrate a light‐emitting diode with voltage‐controlled multicolor electroluminescence. The emission color can be finely tuned by the applied voltage, corresponding to a color change from red to orange, yellow and finally to green. Voltage‐controlled red‐green multicolor electroluminescence can take place in either the CsPbBr3 or CdSe QDs, depending on the ratio of the recombination zone between these two materials.