. "The skilled person knows that the performance of an i-n junction in a light-emitting device is inferior to a p-n junction, and he would therefore replace the i-layer by a p-layer.Auxiliary request lContrary to the i-n light-emitting device of claim 1, wherein a contact layer of one of Ni, Ag, an alloy including Ni, an alloy including Ag, and an alloy including Ti is in contact with the i-layer, th" . . . .