| abstract |
An electroluminescent device comprising a transparent electrode layer, a metallic electrode layer, and an organic interlayer disposed between, and in close contact with, the electrode layers wherein the organic interlayer is comprised of an organic luminescent layer, an optional hole transport layer and an optional electron transport layer, and contains a polyimide of formula (I): n n n wherein A is a moeity derived from a dianhydride compound; B is a moiety derived from a diamine compound; and n is an integer of 2 or higher. |