Patent ID: 10153442

Abstract:
An iridium complex and an OLED using the same are shown. The iridium complex is represented by formula (I), wherein R1 is substituted or unsubstituted C1-12 alkyl, or substituted or unsubstituted C6-12 aryl; R2 is hydrogen, fluorine or —CmF2m+1 (m=1, 2 or 3), substituted or unsubstituted C1-12 alkyl, or substituted or unsubstituted C6-12 aryl; R3 is hydrogen, fluorine or —CmF2m+1 (m=1, 2 or 3), substituted or unsubstituted C1-6 alkyl or alkoxy, and n is 1, 2, 3 or 4; each of R4 is hydrogen or substituted or unsubstituted C1-12 alkyl, or R4's may join to form a C3-8 aromatic ring, and R4's may be the same or different; X1, X2, X3 and X4 are each independently CH or nitrogen; Y1, Y2 and Y3 are each independently carbon or nitrogen, with a proviso that at least one of Y1, Y2 and Y3 is nitrogen, and the tridentate chelate Y1^Y2^Y3 is dianionic.