LED apparatus and evaporation method thereof

An evaporation and device technology, applied in the field of OLED, can solve the problems of collision quenching, reduction of lifespan reduction efficiency, etc., to achieve the effect of improving device efficiency, improving device lifespan, and consistent light emitting direction

Active Publication Date: 2020-12-18
SICHUAN AG RAY NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this process, there may be collision quenching between the electron-type host and the hole-type host, and the excitonic collision of the platinum complex itself will also be quenched, so it is difficult to avoid the reduction of OLED life and efficiency.

Method used

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  • LED apparatus and evaporation method thereof
  • LED apparatus and evaporation method thereof
  • LED apparatus and evaporation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of OLED device, its layer structure comprises successively stacked ITO anode, hole injection layer, hole transport layer, electron blocking layer, light-emitting layer, electron transport layer, electron injection layer, Ag cathode from top to bottom, this OLED device The evaporation method comprises the following process steps:

[0029] 1) Pre-treatment of the ITO substrate by evaporation: The ITO substrate is scrubbed with cleaning solution, ultrasonically cleaned with cleaning solution and ultrasonically cleaned with pure water three times, then baked, and placed in a vacuum sampling chamber to evacuate to a vacuum The speed is 5.0E-0.4Pa, and the rotation speed of the rotating tray is 5r / min;

[0030] 2) Place the pretreated ITO substrate in the evaporation chamber, control the vacuum degree in the evaporation chamber to 2.0E-5Pa, and stack the evaporated hole injection layer, hole transport layer, and electron blocking layer on the ITO substrate in sequence....

Embodiment 2

[0034] A kind of OLED device, its layer structure comprises successively stacked ITO anode, hole injection layer, hole transport layer, electron blocking layer, light-emitting layer, electron transport layer, electron injection layer, Ag cathode from top to bottom, this OLED device The evaporation method comprises the following process steps:

[0035] 1) Pre-treatment of the ITO substrate by evaporation: The ITO substrate is scrubbed with cleaning solution, ultrasonically cleaned with cleaning solution and ultrasonically cleaned with pure water three times, then baked, and placed in a vacuum sampling chamber to evacuate to a vacuum The speed is 3.0E-0.4Pa, and the rotation speed of the rotating tray is 12r / min;

[0036] 2) Place the pretreated ITO substrate in the evaporation chamber, control the vacuum degree in the evaporation chamber to 4.0E-5Pa, and stack the evaporated hole injection layer, hole transport layer, and electron blocking layer on the ITO substrate in sequence...

Embodiment 3

[0040] A kind of OLED device, its layer structure comprises successively stacked ITO anode, hole injection layer, hole transport layer, electron blocking layer, light-emitting layer, electron transport layer, electron injection layer, Ag cathode from top to bottom, this OLED device The evaporation method comprises the following process steps:

[0041] 1) Pre-treatment of the ITO substrate by evaporation: The ITO substrate is scrubbed with cleaning solution, ultrasonically cleaned with cleaning solution and ultrasonically cleaned with pure water three times, then baked, and placed in a vacuum sampling chamber to evacuate to a vacuum The speed is 4.0E-0.4Pa, and the rotation speed of the rotating tray is 12r / min;

[0042] 2) Place the pretreated ITO substrate in the evaporation chamber, control the vacuum degree in the evaporation chamber to 3.0E-5Pa, and stack the evaporated hole injection layer, hole transport layer, and electron blocking layer on the ITO substrate in sequence...

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Abstract

The invention relates to an evaporation method of an OLED apparatus. The method comprises the following steps of: 1) carrying out evaporation pre-treatment on an ITO substrate; 2) successively laminating and evaporating a cavity injection layer, a cavity transmission layer and an electron barrier layer on the ITO substrate; 3) placing a luminous object material and a cavity main body material in asame rotary tray by means of ternary evaporation, placing an electronic main body material outside the rotary tray, heating the cavity main body material after stabilizing the evaporation rate of theluminous object material, starting the rotary tray, controlling the rotating speed of the rotary tray at 10-15 r/min, and then opening a baffle plate for further evaporation to obtain a luminous layer; and 4) successively laminating and evaporating the electron transmission layer, the electron injection layer and a cathode on a luminous layer to obtain an OLED apparatus product. The evaporation method provided by the invention can avoid a cancellation phenomenon between the cavity main body and the electronic main body, so that the service life of the OLED apparatus is prolonged greatly and the luminous efficiency of the OLED apparatus is improved greatly.

Description

technical field [0001] The invention relates to the field of OLEDs, in particular to an OLED device and an evaporation method thereof. Background technique [0002] In recent years, organic light-emitting diodes (OLEDs), as a lighting and display technology with great application prospects, have attracted extensive attention from academia and industry. Phosphorescent materials of iridium complexes have been developed relatively maturely, but due to the blockade of foreign patents, my country began to turn to the research on phosphorescent materials of platinum complexes. [0003] Compared with the octahedral structure of the iridium complex, the platinum complex forms a planar structure. This organic planar structure readily forms π-π bonds when aggregated. However, this π-π combination has advantages and disadvantages. The advantage is to enhance the energy transfer and electron transfer performance between organic materials. The denser stacking of materials increases the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/24C23C14/12C23C14/02C23C14/18H01L51/50H01L51/56
CPCC23C14/24C23C14/12C23C14/021C23C14/18H10K71/164H10K50/12H10K71/00
Inventor 郭英能戴雷蔡丽菲
Owner SICHUAN AG RAY NEW MATERIALS CO LTD
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