The invention discloses an
iridium complex and an
organic light emitting device thereof and relates to the technical field of organic photoelectric materials. The
iridium complex is of a structure asshown in the formula (I). Due to an
electron-rich double-
nitrogen coordination structure in the
iridium complex structure, trivalent
metal cation in the center can be beneficially stabilized, and meanwhile,
electron cloud distribution on the
metal iridium can be affected, so that photoelectric properties of whole complex molecules can be greatly influenced; and in addition, a four-membered ring formed by ligand of the double-
nitrogen coordination structure and the
metal has rigidity, unexpected vibration
energy loss can be favorably reduced, and high-efficiency
light emission properties can beachieved. By adjusting substitution groups, the complex is good in
thermal stability and
chemical property. The iridium metal organic complex can be prepared into a device and can be particularly used as a
doping material, and the device has the advantages of being low in driving
voltage and high in
light emission efficiency and is prior to conventional common OLEDs (Organic Light Emitting Devices).