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QLED containing noble metal nanomaterial and preparation method of QLED

A nanomaterial and precious metal technology, applied in the fields of organic semiconductor devices, semiconductor/solid-state device manufacturing, electrical components, etc., can solve problems such as affecting luminous efficiency, non-radiative recombination of electrons and holes, affecting LSRP enhancement effect, etc., and the method is simple. easy-to-control effects

Inactive Publication Date: 2017-05-31
TCL CORPORATION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a QLED containing noble metal nanomaterials and its preparation method, aiming at solving the problem that the noble metal nanoparticles in the existing QLED containing noble metal nanomaterials affect the LSRP enhancement effect, and the surface defects of the noble metal nanoparticles will cause electron The problem of non-radiative recombination with holes and affecting luminous efficiency at the same time

Method used

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  • QLED containing noble metal nanomaterial and preparation method of QLED
  • QLED containing noble metal nanomaterial and preparation method of QLED
  • QLED containing noble metal nanomaterial and preparation method of QLED

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preparation example Construction

[0047] And, an embodiment of the present invention provides a method for preparing a QLED containing noble metal nanomaterials, comprising the following steps:

[0048] S01. Preparation of nano-noble metal core-shell composite materials;

[0049] S02. Adding the nano-noble metal core-shell structure composite material to at least one of hole injection material, hole transport material, quantum dot luminescent material, electron transport material, and electron injection material to prepare a corresponding functional layer material;

[0050] S03. Provide an anode, and sequentially deposit hole injection materials, hole transport materials, quantum dot luminescent materials, electron transport materials, and electron injection materials to obtain the corresponding hole injection layer, hole transport layer, quantum dot light emitting layer, and electron transport layer, an electron injection layer, and a cathode is formed on the electron injection layer.

[0051] Specifically, ...

Embodiment 1

[0089] A kind of Ag@SiO 2 QLEDs with core-shell composite materials, such as figure 1 As shown, it includes an anode 1, a hole injection layer 2, a hole transport layer 3, a quantum dot light-emitting layer 4, an electron transport layer 5, an electron injection layer 6 and a cathode 7 that are stacked in sequence, wherein the hole injection layer 2 is doped with a nano-noble metal core-shell structure composite material A, the nano-noble metal core-shell structure composite material A is an Ag@SiO2 core-shell structure composite material, and the total weight of the hole injection layer 2 is 100% , the doping weight percentage of the nano-noble metal core-shell structure composite material A is 0.1%.

[0090] The above-mentioned QLED containing noble metal nanomaterials comprises the following steps:

[0091] S11. Ag@SiO 2 Synthesis of core-shell nanoparticles

[0092] S111. Preparation of silver nanoparticles: Pour 200 mL of ethylene glycol into a 250 mL three-necked rou...

Embodiment 2

[0103] A QLED of Ag@C core-shell composite material, such as figure 2 As shown, it includes an anode 1, a hole injection layer 2, a hole transport layer 3, a quantum dot light-emitting layer 4, an electron transport layer 5, an electron injection layer 6 and a cathode 7 that are stacked in sequence, wherein the quantum dot light-emitting layer 4 doped with nano-noble metal core-shell structure composite material A, the nano-noble metal core-shell structure composite material is Ag@C core-shell structure composite material, and based on the total weight of the quantum dot light-emitting layer 4 as 100%, the The doping weight percentage of the nano-noble metal core-shell composite material A is 0.1%.

[0104] The above-mentioned QLED containing noble metal nanomaterials comprises the following steps:

[0105] S21. Synthesis of Ag@C core-shell nanoparticles:

[0106] Weigh 1.0g of glucose, put it into a beaker, then add 20ml of deionized water, stir magnetically, add 0.5ml of ...

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Abstract

The invention provides a QLED containing a noble metal nanomaterial. The QLED comprises an anode, a hole injection layer, a hole transport layer, a quantum dot light-emitting layer, an electron transport layer, an electron injection layer and a cathode which are sequentially stacked, wherein the QLED contains the noble metal nanomaterial; the noble metal nanomaterial is a nano noble metal core-shell structure composite material and comprises a noble metal core and a shell layer structure coating the noble metal core; and at least one of the hole injection layer, the hole transport layer, the quantum dot light-emitting layer, the electron transport layer and the electron injection layer is doped with the nano noble metal core-shell structure composite material; or the nano noble metal core-shell structure composite material is arranged between any two adjacent layers of structures of the hole injection layer, the hole transport layer, the quantum dot light-emitting layer, the electron transport layer and the electron injection layer as a nano noble metal core-shell layer.

Description

technical field [0001] The invention belongs to the field of flat panel display technology, and in particular relates to a QLED containing noble metal nanomaterials and a preparation method thereof. Background technique [0002] Quantum dots have the advantages of narrow luminescence peak and high quantum yield, and can be prepared by printing process, so quantum dot-based light-emitting diodes (ie, quantum dot light-emitting diodes: QLED) have recently received widespread attention, and their device performance indicators have also developed. fast. In order to improve the luminous efficiency of quantum dots, usually doped noble metal nanoparticles in the hole injection layer of QLED devices or spin-coat a layer of nanoparticles on the hole injection layer, using the localized surface plasmon resonance (LSPR) of noble metal nanoparticles ) to enhance the luminous efficiency of quantum dots. When the metal nanoparticles are formed into a film, the nanoparticles will be very...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/54H01L51/56
CPCH10K50/115H10K2102/00H10K71/441H10K71/166
Inventor 李龙基曹蔚然
Owner TCL CORPORATION
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