Report

Three-Color, Tunable, Organic Light-Emitting Devices

Science  27 Jun 1997:
Vol. 276, Issue 5321, pp. 2009-2011
DOI: 10.1126/science.276.5321.2009

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Abstract

An independently controlled, three-color, organic light-emitting device was constructed with a vertically stacked pixel architecture that allows for independent tuning of color, gray scale, and intensity. The 12-layer device structure consists of sequentially stacked layers of metal oxide, amorphous organic, crystalline organic, and metal thin films deposited by a combination of thermal evaporation and radio-frequency sputtering. Each of the three addressable colors is sufficiently bright for flat panel video display applications. A novel inverted structure is used for the middle device in the stack to lower the maximum drive voltage of the compound pixel.

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