Abstract:
An organic electroluminescence device according of the invention includes an anode, a cathode, and at least a first emitting layer and a second emitting layer interposed between the anode and the cathode. The first emitting layer includes a first host material and a first dopant material. The second emitting layer includes a second host material, a third host material and a second dopant material.
Abstract:
An organic electroluminescence device includes an anode, a cathode, and an emitting layer, in which the emitting layer contains a first compound, a second compound, and a third compound, a singlet energy S(M1) of the first compound and a singlet energy S(M2) of the second compound satisfy a numerical formula (Numerical Formula 1) below, an electron affinity Af(M1) of the first compound and an electron affinity Af(M2) of the second compound satisfy a numerical formula (Numerical Formula 2) below, and a triplet energy T(M1) of the first compound satisfies a numerical formula (Numerical Formula 3) below, S(M2)≧S(M1)×0.95 (Numerical Formula 1) Af(M2)−Af(M1)≧0.2 eV (Numerical Formula 2) T(M1)≦2.0 eV (Numerical Formula 3).
Abstract:
An organic electroluminescence device according of the invention includes an anode, a cathode, and at least a first emitting layer and a second emitting layer interposed between the anode and the cathode. The first emitting layer includes a first host material and a first dopant material. The second emitting layer includes a second host material, a third host material and a second dopant material.
Abstract:
An anthracene derivative represented by the following formula (1): wherein in the formula (1), L1 is selected from a single bond and a linking group, and the linking group is selected from a divalent arylene group, a divalent heterocyclic group, and a group formed by linking of 2 to 4 of divalent arylene groups and/or divalent heterocyclic groups. Ar1 is selected from the following formulas (2) and (3). In the formulas (2) and (3), X is selected from an oxygen atom and a sulfur atom. In the formula (2), any one of R11 to R14 is used for bonding to L1. In the formula (3), any one of R21 to R24 is used for bonding to L1. Ar2 is selected from a substituted or unsubstituted aryl group including 6 to 50 ring carbon atoms and a substituted or unsubstituted heterocyclic group including 5 to 50 ring atoms.
Abstract:
An organic electroluminescence device that includes an anode, an emitting layer that includes a host and a fluorescent dopant, an electron transporting zone, a cathode, a blocking layer adjacent to the emitting layer in the electron transporting zone where the blocking layer includes an aromatic heterocyclic derivative with an azine ring and where the triplet energy ETb (eV) of the aromatic heterocyclic derivative is larger than a triplet energy ETh (eV) of the host.
Abstract:
An anthracene derivative represented by the following formula (1): wherein in the formula (1), L1 is selected from a single bond and a linking group, and the linking group is selected from a divalent arylene group, a divalent heterocyclic group, and a group formed by linking of 2 to 4 of divalent arylene groups and/or divalent heterocyclic groups. Ar1 is selected from the following formulas (2) and (3). In the formulas (2) and (3), X is selected from an oxygen atom and a sulfur atom. In the formula (2), any one of R11 to R14 is used for bonding to L1. In the formula (3), any one of R21 to R24 is used for bonding to L1. Ar2 is selected from a substituted or unsubstituted aryl group including 6 to 50 ring carbon atoms and a substituted or unsubstituted heterocyclic group including 5 to 50 ring atoms.
Abstract translation:由下式(1)表示的蒽衍生物:其中,在式(1)中,L1选自单键和连接基,连接基团选自二价亚芳基,二价杂环基和 通过连接2至4个二价亚芳基和/或二价杂环基形成的基团。 Ar1选自下式(2)和(3)。 在式(2)和(3)中,X选自氧原子和硫原子。 式(2)中,R11〜R14中的任一个用于与L1结合。 式(3)中,R21〜R24中的任一个用于与L1结合。 Ar 2选自取代或未取代的环碳原子数为6〜50的芳基和取代或未取代的环原子数为5〜50的杂环基。
Abstract:
The compound represented by formula (1): wherein A, B, R1, and R2 are as defined in the description, provides organic electroluminescence (EL) devices having a high emission efficiency when operated at low voltage and a long lifetime and electronic devices including such organic EL devices.
Abstract:
An organic light-emitting medium including a pyrene derivative represented by the following formula (1) and a phenyl-substituted anthracene derivative represented by the following formula (2): wherein Ar1 to Ar4 are independently a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroaryl group having 5 to 20 ring atoms.
Abstract:
Compounds of formulae (2-7) or (2-9) are provided:
Also provided are organic electroluminescence (EL) devices containing the compounds having a high emission efficiency when operated at low voltage and a long lifetime and electronic devices including such organic EL devices.
Abstract:
The compound represented by formula (1): wherein A, B, R1, and R2 are as defined in the description, provides organic electroluminescence (EL) devices having a high emission efficiency when operated at low voltage and a long lifetime and electronic devices including such organic EL devices.