Thin film electroluminescent device containing gadolinium and rare earth elements
 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. 
Sharp Kabushiki Kaisha
C Y H C H
C09K Y10S H05B C09K H05B
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Koichi Kouji Akiyoshi
Tanaka Taniguchi Mikami