Patent ID: 8048538

Claim:
An organic electroluminescent device comprising: a pair of electrodes consisting of a positive electrode and a negative electrode; and at least two organic layers between the pair of electrodes, wherein the organic layers comprises a hole transporting layer and a light emitting layer, wherein the hole transporting layer contains a compound represented by Formula (1): wherein M represents Ir; R 11 and R 12 each independently represents a hydrogen atom or a substituent group, and R 11 and R 12 may be independently bonded to M or R 11 and R 12 may be bonded to each other to form a cyclic structure; L 11 represents a ligand, and L 11 may be bonded to at least one of R 11 and R 12 ; X 11 represents a counter ion; n 11 represents an integer of 0 to 5; n 12 represents an integer of 1 to 6; n 13 represents an integer of 0 to 3; and C represents a carbene carbon, which is bonded to R 11 and R 12 to coordinate with M, wherein the light emitting layer contains a compound represented by Formula (P-2): wherein Pt represents a platinum ion; Y 21 represents a connection group, a single bond, or a double bond; Y 22 and Y 23 each independently represent a single bond or a connection bond; Q 21 and Q 22 each independently represent an atom group constituting a nitrogen-containing heterocycle, and the bond between a ring formed by Q 21 and Y 21 and the bond between a ring formed by Q 22 and Y 21 each independently represent a single bond or a double bond; X E21 and R E22 each independently represent an oxygen atom, a sulfur atom, or a substituted or non-substituted nitrogen atom; R E21 , R E22 , R E23 , and R E24 each independently represent a hydrogen atom or a substituent group, and R E21 , R E22 , R E23 , and R E24 may form a ring by means of bonding, respectively; L 25 represents a ligand coordinating with the platinum ion; and n E21 represents an integer of 0 to 4, and wherein the compound represented by Formula (P-2) has a maximum luminescence wavelength of from 390 to 495 nm.