Thin film electroluminescent device containing gadolinium and ra

Details Thin film electroluminescent device containing gadolinium and ra Thin film electroluminescent device containing gadolinium and ra

1989-08-10

1990-10-30

James, Andrew J.

Stock material or miscellaneous articles

Composite

Of bituminous or tarry residue

357 6, 428690, 428917, 313509, H01L 2714, H01L 3700, H01L 4902

Patent

active

049672517

ABSTRACT:
A thin film electroluminescent(EL) device includes a luminescent layer, both sides of which are covered with insulating layers, and at least one pair of electrodes sandwiching the luminescent layer through the insulating layers. The luminescent layer is composed of zinc sulfide in which Gd and a luminously effective amount of a rare earth element, acting as luminescent center, are doped at a total amount of 1-4 atomic percent.

REFERENCES:
patent: 4454446 (1984-06-01), Kobayashi
patent: 4510414 (1985-04-01), Fujino et al.
patent: 4594282 (1986-06-01), Kawaguchi
patent: 4603280 (1986-07-01), Pankove
patent: 4672226 (1987-06-01), Taniguchi et al.
Kobayashi, "Mutlicolor Electroluminescent ZnS Thin Films . . . " pp. 713-720.
"Electroluminescence of ZnS Lumocen Devices Containing Rare-Earth and Transition-Metal Fluorides" E. W. Chase et al., Dec. 5, 1968, J. Appl. Phys. #40/6., pp. 2512-2519.
"Color Electroluminescent Devices Prepared by Metal Organic Chemical Vapor Deposition" K. Hirabayashi et al., Japan Display, 1986, pp. 254-257.
"Multicolor Electroluminescent ZnS Thin Films Doped with Rare Earth Fluorides", H. Kobayashi et al., pp. 713-720.
"High-Brightness Green-Emitting Electroluminescent Devices with ZnS:Tb,F Active Layers" T. Ogura et al., Apr. 15, 1986, pp. 1570-1571, Appl. Phys. Lttrs 48/23).

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