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Electroluminescence spectrum illustrating the characteristic red emission of ions. A device schematic and a picture of a working device are the inset.
Light vs voltage curves for a device under varying excitation waveforms: (●) sinusoid, (◼) square wave, (◊) sinusoid, and (▴) square wave. The threshold for visible emission is about , and a luminance of is achieved. The inset shows the frequency dependence of light emission for a sinusoidal waveform.
Light output vs time for 65 and bipolar pulse trains at low frequency.
External charge vs applied voltage loop for and at bipolar pulse trains.
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