Method of producing electroluminescence and electroluminescing l

Details Method of producing electroluminescence and electroluminescing l Method of producing electroluminescence and electroluminescing l

1986-05-21

1989-08-15

Wieder, Kenneth

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

313506, H05B 3314, H05B 3322, H05B 3328

Patent

active

048578037

ABSTRACT:
A method of producing electroluminescence without a chemical reaction by providing a metal oxide containing electron traps, (i.e., holes or distortion of the lattice of the oxide by impurities or surface states), providing free electrons at an energy level in the conduction band and trapping the electrons to release photons. Alternatively, electroluminescence may be produced without a chemical reaction by the decay of the energy level of electrons from an excited state which results from collision of accelerated free electrons with ions in the oxide, the free electrons being provided externally of the oxide (e.g., by an electron gun or the application of a high field to an insulator contiguous to the oxide) or by space charges within the oxide or adjacent to the boundary thereof. Electroluminescing lamps are also disclosed.

REFERENCES:
patent: 4081764 (1978-03-01), Christmann et al.
patent: 4373145 (1983-02-01), McCarthy et al.
patent: 4603280 (1986-07-01), Pankove
patent: 4620132 (1986-10-01), Gordon et al.

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