An electroluminescent device which has an anode (4) and a cathode (10) and
arranged between the anode (4) and the cathode (10) a light emissive
layer (8). Also included between the light emissive layer and the anode
is a dielectric layer, a carbon or amorphous silicon layer, or a layer of
conductive oxide such as tin oxide, vanadium oxide, molybdenum oxide and
nickel oxide.