Fig. 2

Examples of structures of iridium electrophosphorescent dopant complexes:
(a) fac-tris(phenylpyridine) iridium, Ir(ppy)3;
(b) bis(2-(2′-benzothienyl)-pyridinato-N,C)iridium(acetylacetonate), Ir(btp)2(acac)

Examples of structures of iridium electrophosphorescent dopant complexes:
(a) fac-tris(phenylpyridine) iridium, Ir(ppy)3;
(b) bis(2-(2′-benzothienyl)-pyridinato-N,C)iridium(acetylacetonate), Ir(btp)2(acac)