Fig. 3: Performance of the full-color-tunable LED.

a The EQE–J, b J–V–L, and c EQE–L characteristics of B-OLED and Y-QLED, measured by extracting the IZO as a common electrode. d CIE chart and color coordinates of the R, G, and B primary colors. By degrading the color gamut from 63% to 45% NTSC, a wide range of brightness for the R, G, and B emission can be obtained.