WO2021073154A1 - 一种有机发光器件和显示面板 - Google Patents

一种有机发光器件和显示面板 Download PDF

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Publication number
WO2021073154A1
WO2021073154A1 PCT/CN2020/099080 CN2020099080W WO2021073154A1 WO 2021073154 A1 WO2021073154 A1 WO 2021073154A1 CN 2020099080 W CN2020099080 W CN 2020099080W WO 2021073154 A1 WO2021073154 A1 WO 2021073154A1
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Prior art keywords
electron injection
injection layer
layer
organic light
lithium
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PCT/CN2020/099080
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English (en)
French (fr)
Inventor
逄辉
刘彬
李梦真
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昆山国显光电有限公司
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Publication of WO2021073154A1 publication Critical patent/WO2021073154A1/zh
Priority to US17/536,603 priority Critical patent/US20220085317A1/en

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/30—Coordination compounds
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/14—Carrier transporting layers
    • H10K50/15—Hole transporting layers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/14—Carrier transporting layers
    • H10K50/16—Electron transporting layers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/17—Carrier injection layers
    • H10K50/171—Electron injection layers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass

Definitions

  • the embodiments of the present application relate to the field of display technology, for example, to an organic light emitting device and a display panel.
  • organic light-emitting display panels have become more and more widely used due to their advantages such as high response range, high color purity, wide viewing angle, foldability, and low energy consumption.
  • the organic light-emitting display panel includes a plurality of organic light-emitting devices, and the organic light-emitting devices have the defect of short lifetime.
  • the present application provides an organic light-emitting device and a display panel, so as to extend the service life of the organic light-emitting device and the display panel.
  • an embodiment of the present application provides an organic light-emitting device, including a first electrode; a second electrode; an electron injection layer provided between the first electrode and the second electrode; and an organic light emitting device provided between the first electrode and the second electrode.
  • the luminescent material layer between the electrodes, and the electron injection layer is located between the second electrode and the luminescent material layer;
  • the material of the electron injection layer includes ytterbium, and also includes at least one of lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride, and cesium carbonate.
  • an embodiment of the present application also provides a display panel including a plurality of organic light-emitting devices provided in the first aspect.
  • FIG. 1 is a schematic structural diagram of an organic light-emitting device provided by an embodiment of the present application
  • FIG. 2 is a schematic structural diagram of another organic light-emitting device provided by an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of another organic light-emitting device provided by an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of another organic light-emitting device provided by an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of another organic light-emitting device provided by an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a display panel provided by an embodiment of the present application.
  • organic light-emitting devices in the related art have the shortcomings of short life and low luminous efficiency.
  • the reason for the above-mentioned problems is that organic light-emitting devices usually include an electron injection layer.
  • the electron injection layer is usually made of materials with low Work function of metal materials.
  • the chemical properties of the metal material of the electron injection layer in the related art organic light-emitting device are generally more active and easy to be oxidized, so that with the use of the organic light-emitting device, the electron injection ability of the electron injection layer is reduced faster after the material is oxidized.
  • the organic light-emitting device has a shorter service life.
  • FIG. 1 is a schematic structural diagram of an organic light-emitting device provided by an embodiment of the present application.
  • the organic light emitting device includes a first electrode 110, a second electrode 120, an electron injection layer 130 disposed between the first electrode 110 and the second electrode 120, and the first electrode 110 and the second electrode 120 Between the luminescent material layer 140, the electron injection layer 130 is located between the second electrode 120 and the luminescent material layer 140.
  • the material of the electron injection layer 130 includes ytterbium, and also includes at least one of lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride, and cesium carbonate.
  • the first electrode 110 is the anode of the organic light-emitting device
  • the second electrode 120 is the cathode of the organic light-emitting device.
  • the organic light-emitting device can be applied to an organic light-emitting display panel, and the organic light-emitting display panel may be a top-emission type or a bottom-emission type.
  • the first electrode 110 is a reflective electrode, that is, an opaque electrode.
  • the anode can adopt a three-layer structure, in which the first layer and the third layer located on both sides It can be a metal oxide, for example, indium tin oxide (ITO), indium zinc oxide (IZO), aluminum zinc oxide (AZO), and the second layer in the middle can be a metal (such as silver or copper); the second electrode 120, the cathode can be an ITO transparent electrode or a magnesium-silver alloy.
  • ITO indium tin oxide
  • IZO indium zinc oxide
  • AZO aluminum zinc oxide
  • the second layer in the middle can be a metal (such as silver or copper)
  • the second electrode 120, the cathode can be an ITO transparent electrode or a magnesium-silver alloy.
  • the first electrode 110 is the anode as a light-transmitting electrode
  • the second electrode 120 is the cathode as an opaque electrode
  • the cathode is a reflective electrode
  • the cathode is made of magnesium aluminum alloy and other materials.
  • the anode can use ITO.
  • the organic light emitting device further includes a light emitting material layer 140 between the first electrode 110 and the second electrode 120.
  • the light emitting color of the organic light emitting device is related to the light emitting material of the light emitting material layer 140. Different organic light emitting devices can emit light of different colors. For example, organic light emitting devices include red light emitting organic light emitting devices, green light emitting organic light emitting devices, and blue light emitting organic light emitting devices.
  • the electron injection layer 130 is included between the second electrode 120 and the luminescent material layer 140 to ensure that the electrons provided by the second electrode 120 can be effectively injected into the luminescent material layer 140.
  • the electron injection layer 130 includes the metal material ytterbium.
  • the metal material ytterbium has a low work function and a strong electron injection capability, which can make it easier for electrons to be injected into the light-emitting material layer 140, thereby ensuring that the organic light-emitting device can emit light normally. But the metal material ytterbium is chemically active and easily oxidized.
  • the material of the electron injection layer 130 also includes at least one of lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride, cesium carbonate, lithium fluoride, 8-hydroxyquinoline-lithium, nitride Lithium, cesium fluoride and cesium carbonate also have lower work functions, which can further improve the electron injection capability.
  • the chemical properties of lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride, and cesium carbonate are stable. Therefore, the material for the electron injection layer 130 also includes lithium fluoride and 8-hydroxyquinoline-lithium.
  • At least one of lithium nitride, cesium fluoride and cesium carbonate can slow down the oxidation of the metal material ytterbium, thereby reducing the rate of decline of the electron injection capacity of the electron injection layer 130, that is, keeping the electron injection layer 130 higher in electrons.
  • the injection capacity is longer, thereby prolonging the service life of the organic light-emitting device.
  • the organic light-emitting device includes a first electrode, a second electrode, an electron injection layer between the first electrode and the second electrode, and a light-emitting material layer between the first electrode and the second electrode.
  • the material of the electron injection layer includes ytterbium, and also includes at least one of lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride, and cesium carbonate; because the metal material ytterbium has a lower work function, And the chemical properties are active, which can make the electron injection layer have a higher electron injection ability, and because the chemical stability of lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride and cesium carbonate is good, it can Slowing down the oxidation of the metal material ytterbium can reduce the rate of decline of the electron injection capacity of the electron injection layer, that is, the electron injection layer maintains a high electron injection capacity for a longer time, thereby prolonging the service life of the
  • the electron injection layer 130 is a single-layer structure.
  • the electron injection layer 130 when the electron injection layer 130 has a single-layer structure, the electron injection layer 130 is made of ytterbium, and at least one of lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride, and cesium carbonate. It can also include at least one of ytterbium, lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride and cesium carbonate, and other materials.
  • the electron injection layer 130 is a single-layer structure, so that the single-layer electron injection layer 130 includes not only ytterbium, but also lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride, and At least one of cesium carbonate such that at least one of lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride, and cesium carbonate is provided around the material ytterbium.
  • the chemical properties of lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride and cesium carbonate are chemically stable, which makes the chemically stable material wrap the chemically active material ytterbium, which makes the material ytterbium not It is easy to come into contact with oxygen, thereby inhibiting the oxidation of the material ytterbium, so that the electron injection layer 130 maintains a high electron injection capability.
  • the provision of the electron injection layer 130 in a single-layer structure can make the thickness of the electron injection layer 130 relatively thin, thereby facilitating the thinning of the organic light-emitting device. When the organic light-emitting device is applied to an organic light-emitting display panel, it is beneficial to Realize the thinning of the organic light-emitting display panel.
  • the ytterbium in the material of the electron injection layer 130 and the material of the electron injection layer 130 are lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride and carbonic acid
  • the mass ratio of at least one of cesium ranges from 1:10 to 10:1.
  • the mass of ytterbium in the material of the electron injection layer 130 and at least one of lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride, and cesium carbonate in the material of the electron injection layer 130 The ratio refers to the mass of ytterbium in the material of the electron injection layer 130 and at least one of lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride, and cesium carbonate in the material of the electron injection layer 130. The ratio of quality.
  • the mass of at least one of lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride, and cesium carbonate refers to the lithium fluoride and 8-hydroxyquinoline-included in the material of the electron injection layer 130
  • the electron injection ability of the material ytterbium is relatively strong, and the electron injection ability of lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride, and cesium carbonate is relatively weak compared to that of the material ytterbium.
  • the proportion of the material ytterbium in the electron injection layer 130 cannot be too small.
  • the mass ratio of ytterbium to at least one of lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride, and cesium carbonate in the electron injection layer 130 is set to be in the range of 1:10 to 10:1. It is ensured that the material of ytterbium in the electron injection layer 130 will not be too small, and at least one of the materials of lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride and cesium carbonate will not be too small. Therefore, the electron injection capability of the electron injection layer 130 can be ensured, and the oxidation of the ytterbium material in the electron injection layer 130 can be suppressed, thereby prolonging the service life of the organic light emitting device.
  • the ytterbium in the material of the electron injection layer 130 and the material of the electron injection layer 130 are lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride, and The mass ratio of at least one of cesium carbonate is 1:1.
  • Table 1 shows two sets of test results obtained by carrying out the lifetime detection test on the organic light-emitting device 1 with a single-layer structure electron injection layer in the related art and the organic light-emitting device 2 with the single-layer structure electron injection layer 130 in this embodiment.
  • the current density of the current supplied to the organic light-emitting device 1 and the organic light-emitting device 2 during the test is both 11.1mA/cm 2 .
  • the material of the electron injection layer only includes ytterbium, and the total thickness of the electron injection layer is 20 angstroms; in the organic light-emitting device 2 of this embodiment, the electron injection layer
  • the material of 130 includes ytterbium and lithium fluoride, and the mass ratio of ytterbium to lithium fluoride is 1:1, and the total thickness of the electron injection layer 130 is also 20 angstroms.
  • the experimental results in Table 1 are obtained based on a plurality of organic light-emitting devices having the same structure and a plurality of organic light-emitting devices having the same structure.
  • the first organic light-emitting device and the second organic light-emitting device are both organic light-emitting devices that emit blue light.
  • Electron injection layer material Life (H) Voltage (V) Blue light index Organic light-emitting device one ytterbium 390 4.36 Reference Organic light-emitting device 2 Ytterbium: Lithium fluoride 1:1 525 4.47 constant
  • the mass of ytterbium in the material of the electron injection layer 130 and at least one of lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride and cesium carbonate in the material of the electron injection layer 130 When the ratio is 1:1, the blue light index of the organic light-emitting device remains unchanged under the same test conditions; and because the light-emitting efficiency of the organic light-emitting device is positively correlated with the blue light index, the light-emitting efficiency of the second organic light-emitting device in this embodiment is The lifetime of the organic light-emitting device 2 is increased to 525 hours compared to the 390-hour lifetime of the organic light-emitting device 1.
  • the material of the electron injection layer 130 is ytterbium and the material of the electron injection layer 130 is lithium fluoride, 8-
  • the mass ratio of at least one of quinolinol-lithium, lithium nitride, cesium fluoride, and cesium carbonate is 1:1, the service life of the organic light-emitting device is prolonged.
  • FIG. 2 is a schematic structural diagram of another organic light emitting device provided by an embodiment of the present application.
  • the electron injection layer 130 includes at least two sub-electron injection layers stacked, and the at least two sub-electron injection layers include the following three types of sub-electron injection layers.
  • the material includes only the daughter electron injection layer of ytterbium; the material includes the daughter of at least one of lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride, and cesium carbonate Electron injection layer; materials include at least one of lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride and cesium carbonate, and a daughter electron injection layer of ytterbium.
  • the electron injection layer 130 includes at least two sub-electron injection layers arranged in a stack, and the at least two sub-electron injection layers include at least two of the above three sub-electron injection layers, which can make the at least two sub-electron injection layers
  • the material of the electron injection layer 130 composed of the electron injection layer includes both ytterbium and at least one of lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride and cesium carbonate, which can ensure The electron injection capability of the electron injection layer 130 can inhibit the oxidation of the ytterbium material in the electron injection layer 130, thereby prolonging the service life of the organic light emitting device.
  • the material in the electron injection layer includes at least one of lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride, cesium carbonate, and the electron injection layer of ytterbium
  • the electron The mass ratio of at least one of lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride and cesium carbonate in the material of the injection layer and the material of the electron injection layer can refer to the above implementation of this application
  • the example includes a single-layered electron injection layer 130
  • the material of the electron injection layer 130 is ytterbium and the material of the electron injection layer 130 is lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride, and carbonic acid.
  • the mass ratio of at least one of cesium is at least one of cesium.
  • FIG. 2 schematically shows a case where the electron injection layer 130 includes two sub-electron injection layers (for example, denoted as a first sub-electron injection layer 131 and a second sub-electron injection layer 132).
  • the two sub-electron injection layers can be any two of the above three sub-electron injection layers.
  • Table 2 is the two sets of test results obtained by carrying out the lifetime detection test on the organic light emitting device 1 with a single-layer structure electron injection layer in the related art and the organic light emitting device 3 with two sub-electron injection layers in the embodiment of the present application.
  • the current density of the current supplied to the organic light-emitting device 1 and the organic light-emitting device 3 during the test is both 11.1mA/cm 2 .
  • the material of the electron injection layer only includes ytterbium, and the total thickness of the electron injection layer is 20 angstroms; in the third organic light-emitting device of this embodiment, two layers of sub-electrons
  • the thickness of the electron injection layer of lithium fluoride is 10 angstroms, that is, in the third organic light emitting device of this embodiment, the total thickness of the electron injection layer 130 is also 20 angstroms.
  • the experimental results in Table 2 are obtained based on multiple organic light-emitting devices having the same structure and multiple organic light-emitting devices having the same structure.
  • the first organic light-emitting device and the third organic light-emitting device are both organic light-emitting devices that emit blue light.
  • the organic light-emitting device when the electron injection layer 130 includes two sub-electron injection layers, and the material of one of the two sub-electron injection layers only includes ytterbium, and the material of the other layer only includes lithium fluoride, the organic light-emitting device
  • the service life is prolonged, and the blue index of the organic light emitting device is improved, and because the light emitting efficiency of the organic light emitting device is positively correlated with the blue index, the light emitting efficiency of the organic light emitting device is also improved.
  • the electron injection layer 130 includes a first sub-electron injection layer 131 and a second sub-electron injection layer 132, and the material of the first sub-electron injection layer 131 includes ytterbium
  • the material of the second sub-electron injection layer 132 includes at least one of lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride, and cesium carbonate; the second sub-electron injection layer 132 is disposed on the first Between the sub-electron injection layer 131 and the light-emitting material layer 140.
  • the second sub-electron injection layer 132 is disposed between the first sub-electron injection layer 131 and the luminescent material layer 140, that is, the second sub-electron injection layer 132 is closer to the luminescent material than the first sub-electron injection layer 131 Layer 140, the material of the first electron injection layer 131 includes ytterbium, and the material of the second electron injection layer 132 includes at least one of lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride, and cesium carbonate.
  • the material of the first electron injection layer 131 includes ytterbium
  • the material of the second electron injection layer 132 includes at least one of lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride, and cesium carbonate.
  • the material of the first electron injection layer 131 includes ytterbium
  • the material of the second electron injection layer 132 includes at least one of lithium fluoride, 8-hydroxyquinoline
  • the chemical properties of the material of the second sub-electron injection layer 132 are more stable than the chemical properties of the material of the first sub-electron injection layer 131, so that even if the first sub-electron injection layer 131 is oxidized, due to the second sub-electron injection layer 131
  • the injection layer 132 is closer to the luminescent material layer 140, and the second sub-electron injection layer 132 can still effectively inject electrons into the luminescent material layer 140, thereby ensuring the electron injection capability of the electron injection layer 130.
  • FIG. 3 is a schematic structural diagram of another organic light emitting device provided by an embodiment of the present application.
  • the electron injection layer 130 includes a third sub-electron injection layer 133, a fourth sub-electron injection layer 134, and a fifth sub-electron injection layer that are sequentially stacked from the second electrode 120 to the luminescent material layer 140 135.
  • the material of the third electron injection layer 133 includes at least one of lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride and cesium carbonate
  • the material of the fifth electron injection layer 135 includes At least one of lithium fluoride, 8-hydroxyquinoline-lithium, lithium nitride, cesium fluoride, and cesium carbonate
  • the material of the fourth electron injection layer 134 includes ytterbium.
  • the materials included in the third sub-electron injection layer 133 and the fifth sub-electron injection layer 135 are chemically stable, and the materials included in the fourth sub-electron injection layer 134 are chemically active. Therefore, the fourth sub-electron The injection layer 134 is disposed between the third sub-electron injection layer 133 and the fifth sub-electron injection layer 135, so that the third sub-electron injection layer 133 and the fifth sub-electron injection layer 135 can play a role in the fourth sub-electron injection layer 134.
  • the third sub-electron injection layer 133 can suppress the oxidation of the fourth sub-electron injection layer 134 by oxygen invaded from the side of the second electrode 120
  • the fifth sub-electron injection layer 135 can suppress the oxygen invaded from the side of the first electrode 110.
  • the oxidation of the fourth sub-electron injection layer 134 further ensures the electron injection capability of the entire electron injection layer 130, prolongs the service life of the organic light-emitting device, and ensures the light-emitting efficiency of the organic light-emitting device.
  • the total thickness d1 of the electron injection layer 130 is 5 angstroms to 50 angstroms.
  • the total thickness d1 of the electron injection layer 130 is the thickness of the electron injection layer 130 of the single-layer structure; when the electron injection layer 130 is shown in FIGS. 2 and In the structure shown in FIG. 3 including multiple sub-electron injection layers, the total thickness d1 of the electron injection layer 130 is the sum of the thicknesses of the multiple sub-electron injection layers.
  • the total thickness d1 of the electron injection layer 130 is set to be 5 angstroms to 50 angstroms, which can make the thickness of the organic light emitting device thinner, which is beneficial to realize the thinning of the organic light emitting device.
  • FIG. 4 is a schematic structural diagram of another organic light-emitting device provided by an embodiment of the present application. 4, based on the above technical solution, in an embodiment, the organic light emitting device further includes at least one of the following film structures: a hole injection layer 150 located between the first electrode 110 and the light emitting material layer 140 , The hole transport layer 160 between the first electrode 110 and the light emitting material layer 140, and the electron transport layer 170 between the light emitting material layer 140 and the electron injection layer 130.
  • a hole injection layer 150 located between the first electrode 110 and the light emitting material layer 140
  • the hole transport layer 160 between the first electrode 110 and the light emitting material layer 140
  • the electron transport layer 170 between the light emitting material layer 140 and the electron injection layer 130.
  • the hole injection layer 150 is located between the hole transport layer 160 and the first electrode 110.
  • the electron injection layer 130 can first inject electrons from the second electrode 120 into the electron transport layer 170, and then the electron transport layer 170 injects and transports the electrons to the luminescent material layer 140.
  • the electron transport layer 170 can enhance the electron transfer. Injection and transmission capabilities.
  • the hole injection layer 150 can first inject the holes of the first electrode 110 into the hole transport layer 160.
  • the hole transport layer 160 injects and transports holes to the light-emitting material layer 140.
  • the hole transport layer 160 can enhance Hole injection and transport capabilities.
  • the hole injection layer 150 or the hole transport layer 160 directly injects the holes of the first electrode 110 into the light emitting material layer 140.
  • the organic light-emitting device may further include an electron blocking layer 180 adjacent to the luminescent material layer 140 on the side of the first electrode 110 and a hole blocking layer adjacent to the luminescent material layer 140 on the side of the second electrode 120. 190.
  • FIG. 6 is a schematic structural diagram of a display panel provided by an embodiment of the present application.
  • the display panel 10 includes a plurality of organic light emitting devices provided by any of the foregoing embodiments of the present application.
  • the device 100 wherein a plurality of organic light-emitting devices 100 may be formed on a substrate 200, and the electron injection layers 130 of the plurality of organic light-emitting devices 100 may be connected to each other as a whole layer, and the second electrodes 120 of the plurality of organic light-emitting devices may be mutually connected. Connect as a whole layer.

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Abstract

本申请实施例公开了一种有机发光器件和显示面板，有机发光器件包括第一电极、第二电极以及第一电极和第二电极之间的电子注入层和发光材料层，电子注入层的材料包括镱，还包括氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种。

Description

一种有机发光器件和显示面板
本申请要求在2019年10月18日提交中国专利局、申请号为201910994670.2的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及显示技术领域，例如涉及一种有机发光器件和显示面板。
背景技术
随着显示技术的发展，有机发光显示面板因其高响应幅度，高色纯度，宽视角、可折叠性、低能耗等优点而得到越来越广泛的应用。
有机发光显示面板包括多个有机发光器件，有机发光器件存在寿命较短缺陷。
发明内容
本申请提供一种有机发光器件和显示面板，以实现延长有机发光器件和显示面板的使用寿命。
第一方面，本申请实施例提供了一种有机发光器件，包括第一电极；第二电极；设于第一电极和第二电极之间的电子注入层；以及设于第一电极和第二电极之间发光材料层，电子注入层位于第二电极和发光材料层之间；
其中，电子注入层的材料包括镱，以及还包括氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种。
第二方面，本申请实施例还提供了一种显示面板，包括多个第一方面提供的有机发光器件。
附图说明
图1是本申请实施例提供的一种有机发光器件的结构示意图；
图2是本申请实施例提供的另一种有机发光器件的结构示意图；
图3是本申请实施例提供的另一种有机发光器件的结构示意图；
图4是本申请实施例提供的另一种有机发光器件的结构示意图；
图5是本申请实施例提供的另一种有机发光器件的结构示意图；
图6是本申请实施例提供的一种显示面板的结构示意图。
具体实施方式
下面结合附图和实施例对本申请进行说明。此处所描述的实施例仅仅用于解释本申请，而非对本申请的限定。附图中仅示出了与本申请相关的部分而非全部结构。
正如背景技术中所述，相关技术中的有机发光器件存在寿命较短和发光效率低的缺陷。经申请人研究发现，出现上述问题的原因在于，有机发光器件通常包括电子注入层，为保证电子注入层的电子注入能力，相关技术的有机发光器件中，电子注入层的材料通常采用具有较低功函数的金属材料。但是相关技术的有机发光器件中电子注入层的金属材料化学性质通常较为活泼，容易被氧化，使得随着有机发光器件的使用，电子注入层的材料被氧化后电子注入能力降低的速度较快，有机发光器件使用寿命较短。
本实施例提供一种有机发光器件，图1是本申请实施例提供的一种有机发光器件的结构示意图。参考图1，该有机发光器件包括第一电极110，第二电极120，设于第一电极110和第二电极120之间的电子注入层130，以及设于第一电极110和第二电极120之间的发光材料层140，电子注入层130位于第二电极120和发光材料层140之间。其中，电子注入层130的材料包括镱，以及还包括氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种。
本实施例中，8-羟基喹啉-锂的化学式如下：
Figure PCTCN2020099080-appb-000001
在一实施例中，第一电极110为有机发光器件的阳极，第二电极120为有机发光器件的阴极。有机发光器件可应用于有机发光显示面板中，有机发光显示面板可以是顶发光型，也可以是底发光型。当有机发光器件应用于顶发光型有机发光显示面板时，第一电极110即阳极为反射电极，即不透光电极，阳极可以采用三层结构，其中位于两侧的第一层与第三层可为金属氧化物例如可以是铟锡氧化物(ITO)、铟锌氧化物(IZO)、铝锌氧化物(AZO)，中间的第二层可为金属(如银或铜)；第二电极120即阴极可以是ITO透光电极或镁银合金。当有机发光器件应用于底发光型有机发光显示面板时，第一电极110即阳极为透光电极，第二电极120即阴极为不透光电极，阴极作为反射电极，阴极采用镁铝合 金等材料，阳极可以采用ITO。
继续参考图1，有机发光器件还包括第一电极110和第二电极120之间的发光材料层140。有机发光器件的发光颜色与发光材料层140的发光材料相关。不同的有机发光器件可以发出不同颜色的光。例如，有机发光器件包括发红光的有机发光器件，发绿光的有机发光器件和发蓝光的有机发光器件。
在第二电极120与发光材料层140之间包括电子注入层130，进而保证第二电极120提供的电子可以有效地注入发光材料层140。本实施例提供的显示面板中，电子注入层130中包括金属材料镱。金属材料镱具有较低的功函数，电子注入能力强，可以使得电子更容易注入到发光材料层140，进而保证有机发光器件可以正常发光。但是金属材料镱的化学性质活泼，容易被氧化。电子注入层130的材料还包括氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯、碳酸铯中的至少一种，氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯也都具有较低的功函数，可以进一步提高电子的注入能力。并且氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯的化学性质稳定，因此，设置电子注入层130的材料还包括氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种，可以减缓金属材料镱的氧化，进而可以降低电子注入层130电子注入能力的下降速度，即使得电子注入层130保持较高的电子注入能力的时间较长，进而延长有机发光器件的使用寿命。
本实施例提供的有机发光器件，包括第一电极、第二电极、第一电极和第二电极之间的电子注入层以及第一电极和第二电极之间的发光材料层。电子注入层的材料包括镱，以及还包括氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种；因金属材料镱具有较低的功函数，且化学性质活泼，可以使得电子注入层具有较高的电子注入能力，并且，因氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯的化学稳定性好，可以减缓金属材料镱的氧化，进而可以降低电子注入层电子注入能力的下降速度，即使得电子注入层保持较高的电子注入能力的时间较长，进而延长有机发光器件的使用寿命。
继续参考图1，在上述技术方案的基础上，一实施例中，电子注入层130为单层结构。
本实施例中，电子注入层130为单层结构时，电子注入层130由材料镱，以及氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种掺杂而成，也可以包括材料镱，氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种以及其他材料。设置电子注入层130为单层结构，可以使得在该单层的电子注入层130中，既包括材料镱，也包括氟化锂、8-羟基喹啉-锂、氮化锂、 氟化铯和碳酸铯中的至少一种，使得材料镱的周围设置有氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种。而氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯的化学性质稳定，进而使得化学性质稳定的材料将化学性质活泼的材料镱形成包裹，进而使得材料镱不容易与氧气接触，进而抑制材料镱的氧化，使得电子注入层130保持较高的电子注入能力。并且，设置电子注入层130为单层结构，可以使得电子注入层130的厚度可以比较薄，进而有利于实现有机发光器件的薄型化，将该有机发光器件应用于有机发光显示面板时，有利于实现有机发光显示面板的薄型化。
在上述技术方案的基础上，一实施例中，电子注入层130的材料中镱与电子注入层130的材料中氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种的质量比的范围为1:10至10：1。
本实施例中，电子注入层130的材料中镱与电子注入层130的材料中氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种的质量比指的是电子注入层130的材料中镱的质量与电子注入层130的材料中氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种的质量的比例。氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种的质量指电子注入层130的材料中所包括的氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯的总质量。
本实施例中，材料镱的电子注入能力相对较强，氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯的电子注入能力相对材料镱来说较弱，因此，为保证电子注入层130的电子注入能力，电子注入层130中，材料镱的比例不能过少。但是，由于镱的化学性质活泼，而氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯的化学性质相对稳定，所以为抑制电子注入层130中镱的氧化，电子注入层130中氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种的比例不能过少。设置电子注入层130中镱与氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种的质量比的范围为1:10至10：1，可以保证电子注入层130中，材料镱不会过少，且氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种材料也不会过少，由此，既可以保证电子注入层130的电子注入能力，又可以抑制电子注入层130中材料镱的氧化，进而延长有机发光器件的使用寿命。
在上述技术方案的基础上，在一实施例中，电子注入层130的材料中镱与电子注入层130的材料中氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种的质量比为1：1。
表1是对相关技术中具有单层结构电子注入层的有机发光器件一，和本实施例中具有单层结构电子注入层130的有机发光器件二进行寿命检测试验得到的两组试验结果。本次寿命检测试验中，试验时向有机发光器件一和有机发光器件二提供电流的电流密度均为11.1mA/cm 2。在此次寿命检测试验中，相关技术的有机发光器件一中，电子注入层的材料仅包括镱，且电子注入层的总厚度为20埃；本实施例的有机发光器件二中，电子注入层130的材料包括镱和氟化锂，且镱与氟化锂的质量比为1:1，且电子注入层130的总厚度也为20埃。在此次寿命检测试验中，表1中的实验结果基于具有相同结构的多个有机发光器件一和具有相同结构的多个有机发光器件二得到。在此次寿命检测试验中，以有机发光器件一和有机发光器件二均为发出蓝光的有机发光器件进行了试验。
表1
分类 电子注入层材料 寿命(H) 电压(V) 蓝光指数
有机发光器件一 镱 390 4.36 参比
有机发光器件二 镱：氟化锂＝1:1 525 4.47 不变
由表1可知，电子注入层130的材料中镱与电子注入层130的材料中氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种的质量比为1:1时，在测试条件相同的前提下，有机发光器件的蓝光指数不变；又因为有机发光器件的发光效率与蓝光指数正相关，故本实施例中有机发光器件二的发光效率也不受到影响；同时有机发光器件二的寿命则相对有机发光器件一的390小时寿命增加到525小时；因此电子注入层130的材料中镱与电子注入层130的材料中氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种材料的质量比为1:1时，有机发光器件的使用寿命延长。
图2是本申请实施例提供的另一种有机发光器件的结构示意图，参考图2，电子注入层130包括层叠设置的至少两层子电子注入层，至少两层子电子注入层包括以下三种子电子注入层中的至少两种：材料仅包括镱的子电子注入层；材料包括氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种的子电子注入层；材料包括氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种以及镱的子电子注入层。
在一实施例中，电子注入层130包括层叠设置的至少两层子电子注入层，且至少两层子电子注入层包括以上三种子电子注入层中的至少两种，可以使得由至少两层子电子注入层组成的电子注入层130的材料中既包括镱，又包括氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种，进而既可以保 证电子注入层130的电子注入能力，又可以抑制电子注入层130中材料镱的氧化，进而延长有机发光器件的使用寿命。并且，当子电子注入层中的材料为包括氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯、碳酸铯中的至少一种以及镱的子电子注入层时，子电子注入层的材料中镱与子电子注入层的材料中氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种的质量比可以参考本申请上述实施例中包括单层结构的电子注入层130时，电子注入层130的材料中镱与电子注入层130的材料中氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种的质量比。
参考图2，图2示意性地示出了电子注入层130包括两层子电子注入层(例如记为第一子电子注入层131和第二子电子注入层132)的情况。图2中，两层子电子注入层可分别是上述三种子电子注入层的任意两种。
表2是对相关技术中具有单层结构电子注入层的有机发光器件一，和本申请实施例中具有两层子电子注入层的有机发光器件三进行寿命检测试验得到的两组试验结果。本次寿命检测试验中，试验时向有机发光器件一和有机发光器件三提供电流的电流密度均为11.1mA/cm 2。本次寿命检测试验中，相关技术的有机发光器件一中，电子注入层的材料仅包括镱，且电子注入层的总厚度为20埃；本实施例的有机发光器件三中，两层子电子注入层中的一层子电子注入层的材料仅包括镱，另一层子电子注入层的材料仅包括氟化锂，且材料仅包括镱的子电子注入层的厚度为10埃，材料仅包括氟化锂的子电子注入层的厚度为10埃，即本实施例的有机发光器件三中，电子注入层130的总厚度也为20埃。本次寿命检测试验中，表2的实验结果基于具有相同结构的多个有机发光器件一和具有相同结构的多个有机发光器件三得到。本次寿命检测试验中，以有机发光器件一和有机发光器件三均为发出蓝光的有机发光器件进行了试验。
表2
Figure PCTCN2020099080-appb-000002
由上述试验数据可知，电子注入层130包括两层子电子注入层，且两层子电子注入层中一层的材料仅包括镱，另一层的材料仅包括氟化锂时，有机发光 器件的使用寿命延长，并且有机发光器件的蓝光指数提高，又因为有机发光器件的发光效率与蓝光指数正相关，故有机发光器件的发光效率也提高。
继续参考图2，在上述技术方案的基础上，一实施例中，电子注入层130包括第一子电子注入层131和第二子电子注入层132，第一子电子注入层131的材料包括镱，第二子电子注入层132的材料包括氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种；第二子电子注入层132设置于第一子电子注入层131和发光材料层140之间。
本实施例中，第二子电子注入层132设置于第一子电子注入层131和发光材料层140之间，即第二子电子注入层132相对于第一子电子注入层131更加靠近发光材料层140，第一子电子注入层131的材料包括镱，第二子电子注入层132的材料包括氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种。故第二子电子注入层132的材料的化学性质相对于第一子电子注入层131的材料的化学性质更加稳定，由此可以使得即使第一子电子注入层131被氧化，由于第二子电子注入层132更加邻近发光材料层140，第二子电子注入层132仍可以有效地将电子注入到发光材料层140中，进而保证电子注入层130的电子注入能力。
图3是本申请实施例提供的另一种有机发光器件的结构示意图。参考图3，一实施例中，电子注入层130包括自第二电极120至发光材料层140依次层叠设置的第三子电子注入层133、第四子电子注入层134和第五子电子注入层135，第三子电子注入层133的材料包括氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种，第五子电子注入层135的材料包括氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种，第四子电子注入层134的材料包括镱。
本实施例中，第三子电子注入层133和第五子电子注入层135所包括的材料化学性质稳定，第四子电子注入层134所包括的材料化学性质活泼，因此，将第四子电子注入层134设置于第三子电子注入层133和第五子电子注入层135之间，可以使得第三子电子注入层133和第五子电子注入层135对第四子电子注入层134起到保护作用。例如，第三子电子注入层133可以抑制从第二电极120侧入侵的氧气对第四子电子注入层134的氧化，第五子电子注入层135可以抑制从第一电极110侧入侵的氧气对第四子电子注入层134的氧化，进而保证整个电子注入层130的电子注入能力，延长有机发光器件的使用寿命，以及保证有机发光器件的发光效率。
继续参考图1-图3，在上述技术方案的基础上，一实施例中，电子注入层130的总厚度d1为5埃-50埃。
本实施例中，电子注入层130为图1所示的单层结构时，电子注入层130的总厚度d1为该单层结构的电子注入层130的厚度；当电子注入层130为图2和图3所示的包括多层子电子注入层的结构时，电子注入层130的总厚度d1为多个子电子注入层的厚度之和。本施例中，设置电子注入层130的总厚度d1为5埃-50埃，可以使得有机发光器件的厚度较薄，进而有利于实现有机发光器件的薄型化。
图4是本申请实施例提供的另一种有机发光器件的结构示意图。参考图4，在上述技术方案的基础上，一实施例中，有机发光器件还包括以下膜层结构中的至少一层：位于第一电极110和发光材料层140之间的空穴注入层150、位于第一电极110和发光材料层140之间的空穴传输层160、以及位于发光材料层140和电子注入层130之间的电子传输层170。
在一实施例中，有机发光器件同时包括空穴注入层150和空穴传输层160时，空穴注入层150位于空穴传输层160与第一电极110之间。
图4示出了有机发光器件同时包括空穴注入层150、空穴传输层160以及位于发光材料层140和电子注入层130之间的电子传输层170的结构示意图。本实施例中，电子注入层130可首先将第二电极120的电子注入到电子传输层170中，再由电子传输层170向发光材料层140注入和传输电子，电子传输层170可以增强电子的注入和传输能力。同样的，空穴注入层150可首先将第一电极110的空穴注入到空穴传输层160中，空穴传输层160向发光材料层140注入和传输空穴，空穴传输层160可以增强空穴的注入和传输能力。
当有机发光器件仅包括空穴注入层150或空穴传输层160时，空穴注入层150或空穴传输层160直接将第一电极110的空穴注入到发光材料层140中。
一实施例中，如图5所示，有机发光器件还可以包括在第一电极110侧紧邻发光材料层140的电子阻挡层180和在第二电极120侧紧邻发光材料层140的空穴阻挡层190。
本申请实施例还提供了一种显示面板，图6是本申请实施例提供的一种显示面板的结构示意图，参考图6，该显示面板10包括本申请多个上述任意实施例提供的有机发光器件100，其中多个有机发光器件100可以形成于基底200之上，且多个有机发光器件100的电子注入层130可以 相互连接为一整层，多个有机发光器件的第二电极120可以相互连接为一整层。

Claims (20)

  1. 一种有机发光器件，包括：
    第一电极；
    第二电极；
    设于所述第一电极和所述第二电极之间的电子注入层；以及
    设于所述第一电极和所述第二电极之间的发光材料层，所述电子注入层位于所述第二电极和所述发光材料层之间，其中，所述电子注入层的材料包括镱，还包括氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种。
  2. 根据权利要求1所述的有机发光器件，其中，所述电子注入层为单层结构。
  3. 根据权利要求2所述的有机发光器件，其中，所述电子注入层的材料中，所述镱与所述氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种的质量比的范围为1:10至10：1。
  4. 根据权利要求3所述的有机发光器件，其中，所述电子注入层的材料中，所述镱与所述氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种的质量比为1：1。
  5. 根据权利要求1所述的有机发光器件，其中，所述电子注入层包括层叠设置的至少两层子电子注入层，所述至少两层子电子注入层包括以下三种子电子注入层中的至少两种：
    材料仅包括镱的子电子注入层；
    材料包括氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种的子电子注入层；
    材料包括氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种以及镱的子电子注入层。
  6. 根据权利要求5所述的有机发光器件，其中，所述电子注入层包括第一子电子注入层和第二子电子注入层，所述第一子电子注入层的材料包括镱，所述第二子电子注入层的材料包括氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种；所述第二子电子注入层设置于所述第一子电子注入层和所述发光材料层之间。
  7. 根据权利要求5所述的有机发光器件，其中，所述电子注入层包括自所述第二电极至所述发光材料层依次层叠设置的第三子电子注入层、第四子电子注入层和第五子电子注入层，所述第三子电子注入层的材料包括氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种，所述第五电子注入层的材料 包括氟化锂、8-羟基喹啉-锂、氮化锂、氟化铯和碳酸铯中的至少一种，所述第四子电子注入层的材料包括镱。
  8. 根据权利要求1所述的有机发光器件，其中，所述电子注入层的总厚度为5埃-50埃。
  9. 根据权利要求1所述的有机发光器件，还包括以下膜层结构中的至少一层：
    位于所述第一电极和所述发光材料层之间的空穴注入层、位于所述第一电极和所述发光材料层之间的空穴传输层、以及位于所述发光材料层和所述电子注入层之间的电子传输层。
  10. 根据权利要求9所述的有机发光器件，其中，在所述有机发光器件同时包括所述空穴注入层和所述空穴传输层的情况下，所述空穴注入层位于所述空穴传输层与所述第二电极之间。
  11. 根据权利要求9所述的有机发光器件，其中，在所述有机发光器件包括所述电子传输层的情况下，所述电子注入层设置为将所述第二电极产生的电子注入到所述电子传输层中，所述电子传输层设置为将所述电子注入层注入到所述电子传输层中的电子注入到所述发光材料层中。
  12. 根据权利要求10所述的有机发光器件，其中，所述空穴注入层设置为将所述第一电极产生的空穴注入到所述空穴传输层中，所述空穴传输层设置为将所述空穴注入层注入到所述空穴传输层的空穴注入到所述发光材料层中。
  13. 根据权利要求9所述的有机发光器件，其中，在所述有机发光器件包括所述空穴注入层且不包括所述空穴传输层的情况下，所述空穴注入层设置为将所述第一电极产生的空穴注入到所述发光材料层中。
  14. 根据权利要求9所述的有机发光器件，其中，在所述有机发光器件包括所述空穴传输层且不包括所述空穴注入层的情况下，所述空穴传输层设置为将所述第一电极产生的空穴注入到所述发光材料层中。
  15. 根据权利要求1所述的有机发光器件，还包括：
    位于所述第一电极和所述发光材料层之间的电子阻挡层。
  16. 根据权利要求1所述的有机发光器件，还包括：
    位于所述电子注入层和所述发光材料层之间的空穴阻挡层。
  17. 根据权利要求1所述的有机发光器件，其中，所述第一电极为阳极，所述第二电极为阴极。
  18. 一种显示面板，包括多个权利要求1-17任一项所述的有机发光器件。
  19. 根据权利要求18所述的显示面板，还包括：基底；多个所述有机发光器件位于所述基底上。
  20. 根据权利要求18所述的显示面板，其中，所述多个有机发光器件的电子注入层相互连接为一整层，所述多个有机发光器件的第二电极相互连接为一整层。
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102290531A (zh) * 2010-06-16 2011-12-21 三星移动显示器株式会社 有机发光装置及其制造方法
US20130049024A1 (en) * 2011-08-26 2013-02-28 Sung Hoon Choi Organic electroluminescence display device
CN109473561A (zh) * 2018-11-21 2019-03-15 云谷（固安）科技有限公司 有机发光二极管和显示面板
CN110707241A (zh) * 2019-10-18 2020-01-17 昆山国显光电有限公司 一种有机发光器件和显示面板

Family Cites Families (4)

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KR102020484B1 (ko) * 2013-05-30 2019-09-11 삼성디스플레이 주식회사 유기 발광 장치
CN104518147A (zh) * 2013-09-27 2015-04-15 海洋王照明科技股份有限公司 有机电致发光器件及其制备方法
KR102324876B1 (ko) * 2015-08-18 2021-11-12 삼성디스플레이 주식회사 유기 발광 소자 및 이를 포함하는 표시 장치
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Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102290531A (zh) * 2010-06-16 2011-12-21 三星移动显示器株式会社 有机发光装置及其制造方法
US20130049024A1 (en) * 2011-08-26 2013-02-28 Sung Hoon Choi Organic electroluminescence display device
CN109473561A (zh) * 2018-11-21 2019-03-15 云谷（固安）科技有限公司 有机发光二极管和显示面板
CN110707241A (zh) * 2019-10-18 2020-01-17 昆山国显光电有限公司 一种有机发光器件和显示面板

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