Fig. 1. Multiplexed array of multicolored electroluminescent devices.

(A) Schematic of an array of light-emitting MOS capacitors, in which different emitting materials are microdispensed on each capacitor. (B) Optical image of a fabricated 7 × 7 array of devices with a different emitter dispensed on each pixel of the array. Scale bar, 400 μm. (C) Example of time-resolved EL (red) corresponding to a square wave pulsed gate voltage waveform (gray). (D) Example of increase in EL intensity with driving frequency. (E) EL spectra from several materials emitting across the blue to near-infrared range, with emission at all wavelengths in between. (F) Example of EL spectra from a wide range of materials emitting in the visible range (table S2).