A luminescence device having a layer containing a metal coordination
compound which has a partial structure ML.sub.m of formula (2) below and
is preferably entirely represented by formula (3) below:
ML.sub.mL'.sub.n, (3) wherein M denotes a metal atom of Ir, Pt, Rh or
Pd; represent mutually different bidentate ligands; m is 1 or 2 or 3; n
is 0 or 1 or 2 with the proviso that m+n=2 or 3; the partial structure
ML.sub.m is represented by formula (2) below (wherein B is an isoquinolyl
group bonded to the metal M with its N and including a position-1 carbon
atom bonded to a cyclic group A which includes the C bonded to the metal
M), and the partial structure ML'.sub.n is represented by formula (4),
(5) or (6) shown below. There is provided a luminescence device capable
of high-efficiency luminescence and long-term high luminance and adapted
to red luminescence. ##STR00001##