Electroluminescence device with independent electrode structure, preparation method and application

A technology of electroluminescent devices and independent electrodes, which is applied in the fields of electro-solid devices, semiconductor/solid-state device manufacturing, electrical components, etc., can solve problems such as difficult environmental stability, avoid decomposition, good repeatability, and high environmental stability. sexual effect

Active Publication Date: 2022-06-21
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Despite the rapid development of perovskite QLEDs in recent years, it is still a challenge to promote their commercial applications, among which environmental stability is a problem that must be overcome.

Method used

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  • Electroluminescence device with independent electrode structure, preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] This embodiment provides an electroluminescent device with an independent electrode structure and a preparation method, including the following steps:

[0051] Step 1: Cleaning of the transparent indium tin oxide (ITO) transparent conductive glass substrate 1: the transparent conductive glass substrate 1 is ultrasonically cleaned with deionized water, acetone, isopropanol and absolute ethanol in sequence for 20 minutes, and nitrogen gas is used before use. The gun is aimed at the transparent conductive glass substrate 1 for drying, and is treated with UV ozone for 15 minutes;

[0052] Step 2: Prepare hole transport layer 2 on transparent conductive glass substrate 1: Prepare smooth and dense hole transport layer 2 of PEDOT:PSS isopropanol solution on transparent conductive glass substrate 1 by spin coating, and apply Annealed on a heating table at 130°C for 20 minutes;

[0053] Step 3: Preparation of perovskite light-emitting layer 3: First, spin-coat a thin film on th...

Embodiment 2

[0058] This embodiment provides an electroluminescent device with an independent electrode structure and a preparation method, including the following steps:

[0059] Step 1: Cleaning of Transparent Tin Oxide Fluoride (FTO) Transparent Conductive Glass Substrate 1: The transparent conductive glass substrate 1 is ultrasonically cleaned with deionized water, acetone, isopropanol and absolute ethanol in sequence for 20 minutes, and nitrogen gas is used before use. The gun is aimed at the transparent conductive glass substrate 1 for drying, and is treated with UV ozone for 15 minutes;

[0060] Step 2: Prepare a hole transport layer 2 on a transparent conductive glass substrate 1: Prepare a smooth and dense PVK hole transport layer 2 on a transparent conductive glass substrate 1 by spin coating, and place it on a heating stage at 130°C Annealing treatment for 20 minutes;

[0061] Step 3: Preparation of perovskite light-emitting layer 3: First, spin-coat a thin film on the hole tra...

Embodiment 3

[0066] This embodiment provides an electroluminescent device with an independent electrode structure and a preparation method, including the following steps:

[0067] Step 1: Cleaning of Transparent Tin Oxide Fluoride (FTO) Transparent Conductive Glass Substrate 1: The transparent conductive glass substrate 1 is ultrasonically cleaned with deionized water, acetone, isopropanol and absolute ethanol in sequence for 20 minutes, and nitrogen gas is used before use. The gun is aimed at the transparent conductive glass substrate 1 for drying, and is treated with UV ozone for 15 minutes;

[0068] Step 2: Prepare hole transport layer 2 on transparent conductive glass substrate 1: Prepare smooth and dense NiO hole transport layer 2 on transparent conductive glass substrate 1 by spin coating, and place it on a heating stage at 130°C Annealing treatment for 20 minutes;

[0069] Step 3: Preparation of perovskite light-emitting layer 3: First, spin-coat a thin film on the hole transport l...

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Abstract

The invention discloses an electroluminescent device with an independent electrode structure, its preparation method and application. The perovskite electroluminescent device comprises a transparent conductive glass substrate, a hole transport layer, a perovskite light-emitting layer, The electron transport layer, the pressure-sensitive encapsulation layer and the metal electrodes separately arranged, the pressure-sensitive encapsulation layer in the present invention has a pressure-sensitive effect, and when the rough-surfaced metal electrode contacts the pressurized area and is subjected to an external force, the resistance value shows a significant decrease; The light-emitting layer is made of perovskite thin film, which can measure the contact area of ​​the metal electrode with high accuracy. The pressure-sensitive packaging layer can isolate the water and oxygen in the environment to avoid its erosion on the performance of the device and increase the working life of the device; it effectively solves the problem of Difficulties in measuring the rough surface area of ​​metals, and achieve nanoscale resolution to improve the stability of perovskite LEDs.

Description

technical field [0001] The invention belongs to the field of semiconductor electroluminescence devices, and relates to an electroluminescence device with an independent electrode structure and a preparation method and application thereof. Background technique [0002] In all kinds of engineering and research, such as in the process of mechanical research, the problem of metal contact area measurement is often faced. Often due to the different sizes and random distribution of the rough contact surface, the problems of high measurement difficulty and poor accuracy are urgently needed to be solved. technical issues. [0003] Perovskite films or perovskite quantum dots (PQDs) have been sought after in recent decades due to their high photoluminescence quantum yield (PLQY) and tunable and narrow emission bandwidth. In particular, the solution processability of QD materials, which can be dispersed in various solvents and matrices, and subsequently integrated with various devices,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/50H01L51/52H01L51/56G01B7/32G01L1/22
CPCG01L1/22G01B7/32H10K50/115H10K50/11H10K50/82H10K50/844H10K71/00
Inventor 阙文修刘丹王刚锋国玉晓梁轩铭
Owner XI AN JIAOTONG UNIV
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