OU NanoLab/NSF NUE/Bumm & Johnson
ACTFEL Lamps: Schematic of Final Lamp
The ITO and Silver layers act as two plates of a capacitor.
The ITO is
transparent, so the photons can pass through the layer.
The AC current produces a changing electric field in the capacitor that
excites the phosphor.
The excited phosphors emit light.
The dielectric evens out the E field, reflects light, and prevents the
capacitor from shorting.