Patent ID: 8772082

Claim:
A method for manufacturing a light-emitting device, comprising the steps of: forming a light-emitting layer comprising a host material and a guest material over a first electrode; and forming a second electrode over the light-emitting layer, wherein the light-emitting layer is formed by a dry process, wherein the guest material is an organometallic complex represented by General Formula (G1), wherein each of R 1 to R 15 represents hydrogen or an alkyl group having 1 to 4 carbon atoms, wherein one of R 21 and R 22 represents an alkyl group having 2 to 10 carbon atoms and the other of R 21 and R 22 represents an alkyl group having 1 to 10 carbon atoms, wherein M is a central metal and represents an element belonging to Group 9 or Group 10, and wherein n is 1 or 2.