| abstract |
A luminescence device having a layerncontaining a metal coordination compound which has anpartial structure ML m of formula (2) below and isnpreferably entirely represented by formula (3) below:n ML m L' n nwherein M denotes a metal atom of Ir, Pt, Rh or Pd;nrepresent mutually different bidentate ligands; m is 1nor 2 or 3; n is 0 or 1 or 2 with the proviso that m+nn= 2 or 3; the partial structure ML m is represented bynformula (2) below (wherein B is an isoquinolyl groupnbonded to the metal M with its N and including anposition-1 carbon atom bonded to a cyclic group Anwhich includes the C bonded to the metal M), and thenpartial structure ML' n is represented by formula (4),n(5) or (6) shown below. There is provided anluminescence device capable of high-efficiencynluminescence and long-term high luminance and adaptednto red luminescence. |