Abstract
We built a new type of light-emitting device in which the emission layer is confined inside an aluminum channel. A 1200 Å aluminum layer was first deposited on glass by vacuum evaporation and then carved using microlithographic techniques. Channels were typically 1.5 μm width. A 2000 Å thick electroluminescent polymer film was spin coated on top of the Al-channel. The diode emits light under alternative voltages. It can be seen under room illumination. We studied the current–voltage characteristics and LED quantum efficiency. We also studied the glow-discharge effect of the nitrogen gas on the emission spectrum. Efficient electroluminescence may result from a field-induced ionization and recombination process.
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