| 摘要 |
<p>An organic light emitting device comprising <i) a first electrode; <ii) a mixed region comprising a mixture of (1) a tertiary aromatic amine, (2) a metal oxinoid, and (3) a green emitting coumarin dye of the Formula <CHEM> wherein X is selected from the group consisting of an oxygen atom, a sulfur atom, an alkyl imino group and aryl imino group; R1 and R2 are individually selected from the group consisting of alkyl, aryl, and carbocyclic; R3 and R4 are individually selected from the group consisting of a hydrogen atom, alkyl, and optionally a branched or unbranched 5 or 6 member substituent ring connecting with R1 and R2, respectively; and R5, R6, R7 and R8 are individually selected from the group consisting of a hydrogen atom, an alkoxy group and an alkyl group; <iii) a second electrode; <iv) an optional thermal protective element coated on one of the first and second electrodes, wherein one of the first and second electrodes is a hole injecting anode, and one of the first and second electrodes is an electron injecting cathode, and wherein the organic light emitting device further comprises at least one of <v) a hole transport region interposed or situated between the anode and the mixed region, wherein the hole transport region optionally includes a buffer layer; and <vi) an electron transport region interposed between the cathode and the mixed region, and wherein said green emitting dye is present in an amount of from about 0.01 to about 10 weight percent based on the total of said mixed layer components (ii). <IMAGE></p> |
