Patent ID: 8680760

Claim:
A phosphor material, comprising: a transition metal M 1 , wherein M 1 is Pt or Ir; and an aryl substituted beta-diketone ancillary ligand; wherein a general formula of the phosphor material is as the following, wherein L is a ligand; wherein m is 1 or 2; wherein R 1 and R 7 can be identical or different, and R 1 and R 7 are independently selected from the group consisting of the following: H atom, halogen atom, C1-C6 alkyl group, and C1-C6 haloalkyl group; wherein R 2 , R 3 , R 4 , R 5 , and R 6 can be identical or different, and R 2 , R 3 , R 4 , R 5 , and R 6 are independently selected from the group consisting of the following: H atom, halogen atom, C1-C22 alkyl group, C1-C22 haloalkyl group, and C6-C22 aryl group or 5 to 7 membered heterocyclic group with 1 to 4 heteroatom(s) selected from N, O, B, P, Si; wherein the C6-C22 aryl group or 5 to 7 membered heterocyclic group is selected from the group consisting of the following: wherein at least one of R 3 , R 4 , and R 5 is not H atom; wherein L is selected from the group consisting of the following: