Light-emitting thin film and thin film EL device

Details Light-emitting thin film and thin film EL device Light-emitting thin film and thin film EL device

1994-03-23

1997-12-23

Nold, Charles

Stock material or miscellaneous articles

Composite

Of inorganic material

428691, 428917, 313503, 313506, 313509, H05B 3300

Patent

active

057005915

ABSTRACT:
A phosphor thin film of a compound of zinc, cadmium, manganese or alkaline earth metals and an element of group VI is sandwiched by barrier layers having a larger energy gap than that of the phosphor thin film, and a plurality of the sandwich structures are accumulated thicknesswise to constitute a light-emitting device. The phosphor thin film ensures the confinement of injected electrons and holes within the phosphor thin film. The light-emitting device has a high brightness and a high efficiency.

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A.G. Fischer, "Electrolyminescence in II-VI Compounds", Luminescence of Inorganic Solids, Edited by Paul Goldberg, Acadenic Press, 1966, pp. 541-559.
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Suyama et al, "New Type of Thin-Film Electroluminescent Device Having a Multilayer Structure", Applied Physics Letters, vol. 41, No. 5, Sep. 1982, pp. 462-464.

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