A composition containing a triazine compound and an organic electroluminescent device

Abstract

This invention provides a composition containing triazine compounds and an organic electroluminescent device. The composition comprises a first component and a second component, each independently comprising at least one triazine compound, and the triazine compounds in the first and second components are different. By designing the specific composition and further utilizing at least two triazine compounds with different structures, this invention obtains a high-performance composition. Using this composition as the electron transport layer material in an OLED light-emitting device results in a OLED light-emitting device with lower driving voltage, higher current efficiency, and longer lifetime.

Description

Technical Field

[0001] This invention belongs to the field of organic electroluminescent materials technology, specifically relating to a composition containing triazine compounds and an organic electroluminescent device. Background Technology

[0002] Compared to other flat panel displays (e.g., liquid crystal displays (LCDs), plasma display panels (PDPs), field emission displays (FEDs), etc.), organic light-emitting devices (OLEDs) have a simpler structure, various processing advantages, higher brightness, excellent viewing angle characteristics, faster response speed, and lower driving voltage. Therefore, they have been fully developed for use as light sources for flat panel displays (e.g., wall-mounted TVs), or as backlight units for displays, lighting fixtures, advertising boards, etc.

[0003] The structure of an organic light-emitting diode (OLED) consists of an anode, a cathode, and an organic layer between them. To improve the efficiency and stability of OLEDs, the organic material layer comprises multiple layers with different materials, such as a hole injection layer (HIL), a hole transport layer (HTL), an electron blocking layer, a light-emitting layer, a hole blocking layer (HBL), an electron transport layer (ETL), and an electron injection layer (EIL). Currently, organic light emission has become a mainstream display technology, and correspondingly, various novel OLED materials have been developed.

[0004] To meet the higher demands of people for OLED devices, there is an urgent need in the field to develop more types of materials to improve the performance of OLED devices in terms of current efficiency, lifetime, and other aspects. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a composition containing triazine compounds and an organic electroluminescent device. By designing the specific composition and further utilizing at least two triazine compounds with different structures, the present invention obtains a high-performance composition. This composition is then used as the electron transport layer (ETL) material for an OLED light-emitting device, resulting in an OLED light-emitting device with lower driving voltage, higher current efficiency, and longer lifetime.

[0006] To achieve this objective, the present invention adopts the following technical solution: In a first aspect, the present invention provides a composition containing a triazine compound, the composition comprising a first component and a second component, each of the first component and the second component independently comprising at least one triazine compound having a structure as shown in Formula I, and the triazine compound in the first component and the triazine compound in the second component being different: ; Wherein, L is selected from aryl groups of C6-C40; Ar1-Ar4 are each independently selected from any one of C6-C40 aryl groups or C3-C30 heteroaryl groups; In the triazine compounds, each hydrogen atom can be independently replaced by any one of deuterium atoms (-D), -F, or -CN.

[0007] In this invention, the structure of the triazine compounds in the composition is designed, and two different triazine compounds are combined to obtain a high-performance triazine compound-containing composition. This triazine compound-containing composition is used as the material of the electron transport layer of the OLED light-emitting device, so that the OLED light-emitting device has a lower driving voltage, higher current efficiency and longer lifespan.

[0008] It should be noted that, in this invention, the difference between the triazine compounds in the first component and the triazine compounds in the second component refers to the difference in their carbon skeletons, or the difference in their carbon skeletons but the difference in the hydrogen and deuterium atoms at the same carbon atom. In other words, even if the triazine compounds in the first and second components differ only in the hydrogen and deuterium atoms at the same carbon atom, they are considered different compounds.

[0009] In this invention, "D" represents a deuterium atom. Unless otherwise specified, "H" and "hydrogen" both represent "protium".

[0010] In this invention, C6-C40 can be C6, C7, C8, C10, C12, C13, C15, C18, C20, C24, C27 or C30, etc.

[0011] C3-C30 can be C3, C4, C5, C8, C9, C10, C12, C15, C18, C20, C24, C27 or C30, etc.

[0012] The following are preferred technical solutions of the present invention, but are not intended to limit the technical solutions provided by the present invention. The purpose and beneficial effects of the present invention can be better achieved and realized through the following preferred technical solutions.

[0013] Preferably, the triazine class has any one of the structures shown in Formula II-1, Formula II-2, or Formula II-3: ; Among them, L and Ar1-Ar4 have the same definition as above; In the triazine compounds shown in Formula II-1, Formula II-2, and Formula II-3, the hydrogen atoms can be independently replaced by any one of the following: deuterium, -F, and -CN.

[0014] Preferably, the heteroaryl group of C3-C30 is selected from any one of triazinyl, pyridyl, dibenzofuranyl, dibenzothiophenyl, carbazoyl, naphthobenzofuranyl, and naphthobenzothiophenyl.

[0015] Preferably, the arylene group of C6-C40 is selected from at least one of phenylene, naphthylene, biphenylene, terphenylene, 9,9-dimethylfluorene, 9,9-diphenylfluorene, terphenylene, fluoranthylene, anthranilene, phenanthrene, and benzophenanthrene.

[0016] Preferably, the arylene group of C6-C40 is selected from at least one of phenylene, naphthylene, biphenylene, and terphenylene.

[0017] Preferably, the aryl group of C6-C40 is selected from at least one of phenyl, naphthyl, biphenyl, terphenyl, 9,9-dimethylfluorenyl, 9,9-diphenylfluorenyl, triphenylene, fluoranthyl, anthracene, phenanthrene, and benzo[a]phenanthrene.

[0018] Preferably, L is selected from at least one of phenylene, naphthylene, biphenylene, and terphenylene, and more preferably naphthylene or biphenylene.

[0019] Preferably, the triazine compound has any one of the structures shown in Formula II-1A, Formula II-1B, Formula II-2A, Formula II-2B, Formula II-3A, or Formula II-3B: ; Ar1-Ar4 have the same definitions as above; In the triazine compounds shown in Formula II-1A, Formula II-1B, Formula II-2A, Formula II-2B, Formula II-3A, and Formula II-3B, the hydrogen atom can be independently replaced by any one of deuterium, -F, or -CN.

[0020] Preferably, Ar1-Ar4 are each independently selected from any one of phenyl, naphthyl, biphenyl, dibenzofuranyl, dibenzothiophenyl, and 9,9-dimethylfluorenyl.

[0021] Preferably, the triazine compound represented by Formula I includes any one of the following substituted or unsubstituted compounds: ; The substitution refers to the replacement of at least one hydrogen atom in the above-mentioned triazine compounds with a deuterium atom.

[0022] Preferably, the triazine compound includes any one of the following compounds: , , , , , , , , , , .

[0023] Preferably, the composition containing a triazine compound comprises a first component and a second component, wherein the first component is... The second component is .

[0024] Preferably, the composition containing a triazine compound comprises a first component and a second component, wherein the first component is... The second component is .

[0025] Preferably, the composition containing a triazine compound comprises a first component and a second component, wherein the first component is... The second component is .

[0026] Preferably, the composition containing a triazine compound comprises a first component and a second component, wherein the first component is... The second component is .

[0027] Preferably, the composition containing a triazine compound comprises a first component and a second component, wherein the first component is... The second component is .

[0028] Preferably, the composition containing a triazine compound comprises a first component and a second component, wherein the first component is... The second component is .

[0029] Preferably, the composition containing a triazine compound comprises a first component and a second component, wherein the first component is... The second component is .

[0030] Preferably, the composition containing a triazine compound comprises a first component and a second component, wherein the first component is... The second component is .

[0031] Preferably, the composition containing a triazine compound comprises a first component and a second component, wherein the first component is... The second component is .

[0032] Preferably, in the composition containing triazine compounds, the ratio of the first component and the second component is different or the same; the ratio represents the mass ratio or the volume ratio.

[0033] The proportion here has two meanings: One meaning is the mass ratio. When the first component and the second component are mixed and used as a premixed material, since the materials are both solids, generally existing in powder form, it is not practical to measure the volume, but the mass is easier to measure. In this case, the ratio of the first component to the second component refers to their mass ratio.

[0034] Another meaning refers to volume ratio. When fabricating OLED devices, different materials are placed in different evaporation sources, and the evaporation rate of different materials is controlled so that a mixture of a specified ratio is used as the light-emitting layer material in the organic electroluminescent device. The different or the same evaporation rate can be regarded as the difference or the same volume ratio of the materials deposited on the substrate.

[0035] The proportions of the first component and the second component in the sense of this invention are different or the same, including the above-mentioned different and the same mass ratio and / or volume ratio.

[0036] Preferably, with the sum of the volume percentages of the first component and the second component being 100%, the volume percentage of the first component is 0.1%-49% (e.g., it can be 0.1%, 1%, 5%, 10%, 12%, 15%, 18%, 20%, 25%, 30%, 35%, 40%, 45%, or 49%, etc.), more preferably 10%-40%, further preferably 10%-30%, even more preferably 10%-20%, and still more preferably 15%-20%.

[0037] Preferably, with the sum of the volume percentages of the first component and the second component being 100%, the volume percentage of the first component is 51%-95% (e.g., it can be 51%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 92%, or 95%, etc.), more preferably 60%-95%, further preferably 70%-95%, even more preferably 80%-95%, and still more preferably 90%-95%.

[0038] Preferably, with the sum of the volume percentages of the first component and the second component being 100%, the volume percentage of the first component is 70%-90% (e.g., it can be 70%, 72%, 75%, 77%, 80%, 81%, 84%, 85%, 88%, or 90%, etc.), and more preferably 75%-85%.

[0039] Preferably, with the mass percentage of the first component and the second component being 100%, the mass percentage of the first component is 0.1%-49% (e.g., it can be 0.1%, 1%, 5%, 10%, 12%, 15%, 18%, 20%, 25%, 30%, 35%, 40%, 45%, or 49%, etc.), preferably 10%-40%, more preferably 10%-30%, even more preferably 10%-20%, and still more preferably 15%-20%.

[0040] Preferably, with the mass percentage of the first component and the second component being 100%, the mass percentage of the first component is 51%-95% (e.g., it can be 51%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 92%, or 95%, etc.), more preferably 60%-95%, further preferably 70%-95%, even more preferably 80%-95%, and still more preferably 90%-95%.

[0041] Preferably, with the mass percentage of the first component and the second component being 100%, the mass percentage of the first component is 70%-90% (for example, it can be 70%, 72%, 75%, 77%, 80%, 81%, 84%, 85%, 88%, or 90%, etc.), and more preferably 75%-85%.

[0042] Preferably, the first component and the second component are in the same ratio, whereby the ratio represents a mass ratio or a volume ratio.

[0043] In this invention, the amount of the first and second components in the composition is designed to enable the OLED light-emitting device to have a lower driving voltage, higher current efficiency, and longer lifespan.

[0044] In a second aspect, the present invention provides an organic electroluminescent device, the organic electroluminescent device comprising an anode, a cathode, and an organic thin film layer disposed between the anode and the cathode; The material of the organic thin film layer includes compositions containing triazine compounds as described in the first aspect.

[0045] Preferably, the organic thin film layer includes an electron transport layer; The material of the electron transport layer includes a composition containing triazine compounds as described in the first aspect.

[0046] Thirdly, the present invention provides a display device comprising the organic electroluminescent device as described in the second aspect.

[0047] Compared with the prior art, the present invention has the following beneficial effects: In this invention, the structure of the triazine compound shown in Formula I of the composition and the specific composition of the triazine compound-containing composition are designed, and this triazine compound-containing composition is used as the material of the electron transport layer of the OLED light-emitting device, so that the OLED light-emitting device has a lower driving voltage, higher current efficiency and longer life. Detailed Implementation

[0048] To facilitate understanding of the present invention, the following embodiments are provided. Those skilled in the art should understand that these embodiments are merely illustrative and should not be construed as limiting the scope of the invention.

[0049] The specific structures of some of the compounds used in the following device embodiments and device comparative examples are shown below: , , , , , , , , , , , , , , , , , , , .

[0050] Device Example 1 This embodiment of the device provides an organic electroluminescent device, the structure of which is ITO / HT (40nm) / light-emitting layer (30nm): BD-2 (3%) / electron transport layer (30nm) / LiF (0.5nm) / Al (150nm); The fabrication method of the above-mentioned organic electroluminescent device is as follows: (1) The glass substrate coated with ITO transparent conductive layer (as anode) is ultrasonically treated in cleaning agent, then rinsed in deionized water, then ultrasonically degreased in a mixed solvent of acetone and ethanol, then dried completely in a clean environment, then cleaned with ultraviolet light and ozone, and bombarded with low-energy cation beam to improve the properties of ITO surface and enhance its bonding ability with hole injection layer. (2) Place the glass substrate in a vacuum chamber and evacuate it to 1×10⁻⁶. -6 ~1×10 -5 Pa, a mixture of D4-HTSP1 and D8-HTSP1 was vacuum-deposited on the anode. By placing these two compounds in different evaporation sources and controlling the temperature of the evaporation sources to control the evaporation rate of the two compounds, a mixture with a desired volume ratio of 1:1 was obtained and used as the HT layer of the device. The total evaporation rate of the two compounds was 0.01 nm / s, and the evaporation film thickness was 40 nm. (3) A light-emitting layer is vacuum-deposited on the hole transport layer at a deposition rate of 0.01 nm / s and a total film thickness of 30 nm. The main material of the light-emitting layer is BH, the doping material is BD-2, and the volume ratio of the main material to the doping material is 97:3. (4) Vacuum evaporation of ET071 and ET071D on the organic light-emitting layer as the electron transport layer of the organic electroluminescent device; when the electron transport layer material is two or more substances, different electron transport materials are placed in different evaporation sources, and the evaporation rate of different electron transport materials is controlled so that the mixture with a specified volume ratio is used as the electron transport layer in the organic electroluminescent device. The total evaporation rate of all electron transport layer materials is 0.01 nm / s, and the total evaporation film thickness is 30 nm. (5) Vacuum evaporation of 0.5 nm LiF and 150 nm Al on the electron transport layer as electron injection layer and cathode to obtain the organic electroluminescent device.

[0051] Device Example 2-Device Example 3 Device Examples 2-3 each provide an organic electroluminescent device, which differs from Device Example 1 only in that the electron transport layer material is different (the first component and the second component are different). The specific composition is detailed in Table 1 below. Furthermore, when the electron transport layer material is composed of multiple compounds, the volume ratio between the compounds is the same. Other structures, materials, and preparation methods are the same as those in Device Example 1.

[0052] Device Comparison Examples 1-3 Comparative Examples 1-3 each provide an organic electroluminescent device, which differs from Device Example 1 only in that the electron transport layer material is different (the first component and the second component are different). The specific composition is detailed in Table 1 below. Furthermore, when the electron transport layer material is composed of multiple compounds, the volume ratio between the compounds is the same. Other structures, materials, and preparation methods are the same as those in Device Example 1.

[0053] Performance testing: The driving voltage, current efficiency, and lifetime LT90 of the organic electroluminescent devices provided above were tested. LT90 refers to the time required for the brightness to drop to 90% of the original brightness while maintaining the current density at an initial brightness of 1000 nits. The specific test results are shown in Table 1, where the driving voltage, current efficiency, and LT90 are all relative values.

[0054] Table 1 Note: In Table 1, “ / ” indicates that the electron transport layer material of the device embodiment or device comparison example does not contain this component.

[0055] As can be seen from the comparison of Device Examples 1-3 and Device Comparative Examples 1-3, the present invention is designed by the structure of the triazine compound shown in Formula I in the composition and the specific composition of the composition containing the triazine compound, and uses this composition containing the triazine compound as the material of the electron transport layer of the OLED light-emitting device, so that the OLED light-emitting device has a lower driving voltage, higher current efficiency and longer life.

[0056] Device Comparison Example 4 - Device Comparison Example 6 Comparative Examples 4-6 each provide an organic electroluminescent device, which differs from Device Example 1 only in that the electron transport layer material is different (the first component and the second component are different). The specific composition is detailed in Table 2 below. Furthermore, when the electron transport layer material is composed of multiple compounds, the volume ratio between the compounds is the same. Other structures, materials, and preparation methods are the same as those in Device Example 1.

[0057] Performance testing: The driving voltage, current efficiency, and lifetime LT90 of the organic electroluminescent devices provided above were tested. LT90 refers to the time required for the brightness to drop to 90% of the original brightness while maintaining the current density at an initial brightness of 1000 nits. The specific test results are shown in Table 2, where the driving voltage, current efficiency, and LT90 are all relative values.

[0058] Table 2 Note: In Table 2, " / " indicates that the electron transport layer material of the device embodiment or device comparison example does not contain this component.

[0059] As can be seen from the comparison of devices in Comparative Examples 4 to 6, using a composition of triazine compounds not provided in this invention as the electron transport layer material has little effect on improving the performance of OLED light-emitting devices.

[0060] Specifically: The OLED light-emitting device prepared by using the combination of compound ET1 and compound ET2 as the electron transport layer material has a higher driving voltage than the OLED light-emitting device prepared by using compound ET1 alone or compound ET2 alone.

[0061] When the combination of compounds ET1 and ET2 is used as an electron transport layer material to prepare devices, the current efficiency is lower than that of OLED light-emitting devices prepared by using compound ET1 alone as an electron transport material and OLED light-emitting devices prepared by using compound ET2 alone as an electron transport material.

[0062] The OLED light-emitting device prepared by using the combination of compound ET1 and compound ET2 as the electron transport layer material has a lifetime that is about 5% longer than that prepared by using compound ET1 alone as the electron transport material, but a lifetime that is 4.5% shorter than that prepared by using compound ET2 alone as the electron transport material.

[0063] Device Examples 4-6, Device Comparative Example 7 Device Examples 4-6 and Device Comparative Example 7 each provide an organic electroluminescent device. The only difference between them and Device Example 1 is that the electron transport layer material is different (the first component and the second component are different). The specific composition is detailed in Table 3 below. Furthermore, when the electron transport layer material is composed of multiple compounds, the volume ratio between the compounds is the same. Other structures, materials and preparation methods are the same as those in Device Example 1.

[0064] Performance testing: The driving voltage, current efficiency, and lifetime LT90 of the organic electroluminescent devices provided above were tested. LT90 refers to the time required for the brightness to drop to 90% of the original brightness while maintaining the current density at an initial brightness of 1000 nits. The specific test results are shown in Table 3, where the driving voltage, current efficiency, and LT90 are all relative values.

[0065] Table 3 As can be seen from the above, the present invention is designed by the structure of the triazine compound shown in Formula I in the composition and the specific composition of the composition containing the triazine compound, and uses this composition containing the triazine compound as the material of the electron transport layer of the OLED light-emitting device, so that the OLED light-emitting device has a lower driving voltage, higher current efficiency and longer life.

[0066] Device Examples 7-8, Device Comparative Example 8 Device Examples 7-8 and Device Comparative Example 8 each provide an organic electroluminescent device. The only difference between them and Device Example 1 is that the electron transport layer material is different (the first component and the second component are different). The specific composition is detailed in Table 4 below. Furthermore, when the electron transport layer material is composed of multiple compounds, the volume ratio between the compounds is the same. Other structures, materials and preparation methods are the same as those in Device Example 1.

[0067] Performance testing: The driving voltage, current efficiency, and lifetime LT90 of the organic electroluminescent devices provided above were tested. LT90 refers to the time required for the brightness to drop to 90% of the original brightness while maintaining the current density at an initial brightness of 1000 nits. The specific test results are shown in Table 4, where the driving voltage, current efficiency, and LT90 are all relative values.

[0068] Table 4 Device Examples 9-14 Device Examples 9-14 each provide an organic electroluminescent device, differing from Device Example 1 only in that the electron transport layer material is prepared by premixing two components. Specifically, the first and second components are heated to melt under nitrogen, stirred thoroughly, cooled, and then ground. During device fabrication, the material obtained by premixing the first and second components is placed in an evaporation source and heated to deposit onto the light-emitting layer to form the electron transport layer. The mass ratio of the first and second components during premixing is shown in Table 5. Furthermore, the composition of the main material of the light-emitting layer is replaced by BH1 instead of BHH. Other structures, materials, and preparation methods are the same as in Device Example 1.

[0069] Performance testing: The driving voltage, current efficiency, and lifetime LT90 of the organic electroluminescent devices provided above were tested. LT90 refers to the time required for the brightness to drop to 90% of the original brightness while maintaining the current density at an initial brightness of 1000 nits. The specific test results are shown in Table 5, where the driving voltage, current efficiency, and LT90 are all relative values.

[0070] Table 5 As can be seen from the above, by designing the amounts of the first and second components in the triazine compound composition, the present invention enables OLED light-emitting devices to have lower driving voltage, higher current efficiency, and longer lifespan.

[0071] In summary, this invention designs the triazine compound shown in Formula I of the composition and the specific composition of the triazine compound-containing composition, and uses this triazine compound-containing composition as the material of the electron transport layer of the OLED light-emitting device, so that the OLED light-emitting device has a lower driving voltage, higher current efficiency and longer lifespan.

[0072] The applicant declares that the detailed process flow of this invention is illustrated by the above embodiments, but this invention is not limited to the above detailed process flow, that is, it does not mean that this invention must rely on the above detailed process flow to be implemented. Those skilled in the art should understand that any improvements to this invention, equivalent substitutions of raw materials for the product of this invention, addition of auxiliary components, and selection of specific methods, etc., all fall within the protection scope and disclosure scope of this invention.

Claims

1. A composition containing a triazine compound, characterized in that, The composition containing triazine compounds comprises a first component and a second component, each of the first and second components independently comprising at least one triazine compound having the structure shown in Formula I, and the triazine compounds in the first component and the triazine compounds in the second component are different: ； Wherein, L is selected from aryl groups of C6-C40; Ar1-Ar4 are each independently selected from any one of C6-C40 aryl groups or C3-C30 heteroaryl groups; In the triazine compounds, each hydrogen atom can be independently replaced by any one of deuterium, -F, or -CN.

2. The composition containing a triazine compound according to claim 1, characterized in that, The triazine class has any one of the structures shown in Formula II-1, Formula II-2 or Formula II-3: ； Wherein, L and Ar1-Ar4 have the same definition as in claim 1; In the triazine compounds shown in Formula II-1, Formula II-2, and Formula II-3, the hydrogen atoms can be independently replaced by any one of the following: deuterium, -F, and -CN.

3. The composition containing a triazine compound according to claim 1 or 2, characterized in that, The heteroaryl group of C3-C30 is selected from any one of triazinyl, pyridyl, dibenzofuranyl, dibenzothiophenyl, carbazoyl, naphthobenzofuranyl, and naphthobenzothiophenyl. Preferably, the arylene group of C6-C40 is selected from at least one of phenylene, naphthylene, biphenylene, terphenylene, 9,9-dimethylfluorene, 9,9-diphenylfluorene, terphenylene, fluoranthylene, anthranilene, phenanthrene, and benzophenanthrene. Preferably, the arylene group of C6-C40 is selected from at least one of phenylene, naphthylene, biphenylene, and terphenylene; Preferably, the aryl group of C6-C40 is selected from at least one of phenyl, naphthyl, biphenyl, terphenyl, 9,9-dimethylfluorenyl, 9,9-diphenylfluorenyl, triphenylene, fluoranthyl, anthracene, phenanthrene, and benzo[a]phenanthrene.

4. The composition containing a triazine compound according to any one of claims 1-3, characterized in that, The L is selected from at least one of phenylene, naphthylene, biphenylene, and terphenylene, and is more preferably naphthylene or biphenylene; Preferably, the triazine compound has any one of the structures shown in Formula II-1A, Formula II-1B, Formula II-2A, Formula II-2B, Formula II-3A, or Formula II-3B: ； Ar1-Ar4 have the same definition as in claim 1; In the triazine compounds shown in Formula II-1A, Formula II-1B, Formula II-2A, Formula II-2B, Formula II-3A, and Formula II-3B, the hydrogen atom can be independently replaced by any one of deuterium, -F, or -CN.

5. The composition containing a triazine compound according to any one of claims 1-4, characterized in that, Each of Ar1-Ar4 is independently selected from any one of phenyl, naphthyl, biphenyl, dibenzofuranyl, dibenzothiophenyl, and 9,9-dimethylfluorenyl.

6. The composition containing a triazine compound according to any one of claims 1-5, characterized in that, The triazine compounds represented by Formula I include any one of the following substituted or unsubstituted compounds: ； The substitution refers to the substitution of at least one hydrogen atom in the above compound by a deuterium atom; Preferably, the triazine compound includes any one of the following compounds: 、 、 、 、 、 、 、 、 、 、 。 7. The composition containing a triazine compound according to any one of claims 1-6, characterized in that, The composition containing triazine compounds comprises a first component and a second component, wherein the first component is... The second component is ; Preferably, the composition containing a triazine compound comprises a first component and a second component, wherein the first component is... The second component is ; Preferably, the composition containing a triazine compound comprises a first component and a second component, wherein the first component is... The second component is ; Preferably, the composition containing a triazine compound comprises a first component and a second component, wherein the first component is... The second component is ; Preferably, the composition containing a triazine compound comprises a first component and a second component, wherein the first component is... The second component is ; Preferably, the composition containing a triazine compound comprises a first component and a second component, wherein the first component is... The second component is ; Preferably, the composition containing a triazine compound comprises a first component and a second component, wherein the first component is... The second component is ; Preferably, the composition containing a triazine compound comprises a first component and a second component, wherein the first component is... The second component is ; Preferably, the composition containing a triazine compound comprises a first component and a second component, wherein the first component is... The second component is .

8. The composition containing a triazine compound according to any one of claims 1-7, characterized in that, In the composition containing triazine compounds, the ratio of the first component and the second component may be different or the same; the ratio represents a mass ratio or a volume ratio. Preferably, with the sum of the volume percentages of the first component and the second component being 100%, the volume percentage of the first component is 0.1%-49%, more preferably 10%-40%, further preferably 10%-30%, even more preferably 10%-20%, and still even more preferably 15%-20%. Preferably, with the sum of the volume percentages of the first component and the second component being 100%, the volume percentage of the first component is 51%-95%, more preferably 60%-95%, further preferably 70%-95%, even more preferably 80%-95%, and still more preferably 90%-95%. Preferably, with the sum of the volume percentages of the first component and the second component being 100%, the volume percentage of the first component is 70%-90%, more preferably 75%-85%; Preferably, based on the mass percentages of the first component and the second component being 100%, the mass percentage of the first component is 0.1%-49%, more preferably 10%-40%, further preferably 10%-30%, even more preferably 10%-20%, and still more preferably 15%-20%. Preferably, based on the mass percentages of the first component and the second component being 100%, the mass percentage of the first component is 51%-95%, more preferably 60%-95%, further preferably 70%-95%, even more preferably 80%-95%, and still more preferably 90%-95%. Preferably, based on the mass percentages of the first component and the second component being 100%, the mass percentage of the first component is 70%-90%, more preferably 75%-85%; Preferably, the first component and the second component are in the same ratio, whereby the ratio represents a mass ratio or a volume ratio.

9. An organic electroluminescent device, characterized in that, The organic electroluminescent device includes an anode, a cathode, and an organic thin film layer disposed between the anode and the cathode; The material of the organic thin film layer includes the composition containing triazine compounds as described in any one of claims 1-8.

10. The organic electroluminescent device according to claim 9, characterized in that, The organic thin film layer includes an electron transport layer; the material of the electron transport layer includes the composition containing a triazine compound as described in any one of claims 1-8.

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