OU NanoLab/NSF NUE/Bumm & Johnson
After the thin films are dry, the lamp
needs a power source.
Copper tape is used to make good
contacts without damaging the lamp.
Small pieces of tape are attached to the ITO
layer and the silver layer separately.
The phosphor requires a changing electric
field in order to fluoresce.
A DC voltage will only produce a changing
electric field in a capacitor as it charges.
In order to produce continuous lighting an
AC voltage is required.
Normal 110V 60Hz AC power can be used to
light your lamp.
In the lab we use a high
frequency power supply 60-2000 Hz and a few
hundred volts, which gives a brighter light.
Front and back of device