OU NanoLab/NSF NUE/Bumm & Johnson
– alternating current thin film electroluminescence; gives off light when influenced
by electrical current.
– the direct conversion of electrical energy into light.
a very thin deposition of a colloidal substance (phosphor, dielectric, silver)
onto the ITO coated glass plate.
– Indium Tin Oxide (In
) A thin layer of indium oxide that has been doped with
tin; transparent, conductive coating on glass plate.
– powders made of materials such as zinc sulfide, doped with either copper or
manganese to achieve the emission colors when exposed to an electric field.
– an insulating layer that serves to even out the electric field across the
phosphor layer and prevents short circuits.
The dielectric in this case is barium titanate.
– form the plates of the capacitor; one front electrode of transparent ITO and
one back electrode of silver.
The Luxprint Electroluminescent Inks for this lab were donated by DuPont Microcircuit
Initial development of this lab activity was performed by James Dizikes and Lloyd Bumm
with the support of a Nanotechnology Undergraduate Education program grant.