Fitzpatrick, Cella, Harper & Scinto
Light emitting device
 A light emitting device includes a luminescent layer having at least two layers comprising non-single crystalline silicon containing hydrogen atoms laminated and having a homo-junction, and at least a pair of electrodes connected electrically to the 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 10.sup.16 cm.sup.-3.eV.sup.-1 or less. 
Canon Kabushiki Kaisha
H H H B H H
H05B H01L H01L B82Y H01L H01L
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Yutaka Masafumi Hisanori Katsuji
Hirai Sano Tsuda Takasu