Fitzpatrick, Cella, Harper & Scinto
Non-single crystal electroluminescent device
 A light emitting device has a luminescent layer having at least two layers of a non-single crystalline material containing silicon atoms, carbon atoms and hydrogen atoms laminated and having a homojunction, and at least a pair of electrodes connected electrically to said luminescent layer, the non-single crystalline silicon layer having an optical band gap of 2.0 eV or higher and a localized level density at mid-gap of 5.times.10.sup.16 cm.sup.-3 .multidot.eV.sup.-1 or less. 
Canon Kabushiki Kaisha
B H H H H H H
B82Y H01L H01L H01L H01L H01L H05B
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Katsuji Hisanori Yutaka Masafumi
Takasu Tsuda Hirai Sano