Stacking colors

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Science  27 Jun 1997:
Vol. 276, Issue 5321, pp. 1945
DOI: 10.1126/science.276.5321.1945c

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Organic light-emitting devices (OLEDs) have potential uses in flat panel displays. Shen et al. (p. 2009) have taken advantage of transparent electrode materials to create a multilayer device that stacks red, green, and blue OLEDs vertically, an arrangement that simplifies patterning across the display. The intensity of each color can be varied independently.