Check patentability & draft patents in minutes with Patsnap Eureka AI!

Preparation method of blue light emitting diode based on Mg <2+> doped quasi-two-dimensional perovskite material

A technology of perovskite materials and light-emitting diodes, which is applied in semiconductor/solid-state device manufacturing, semiconductor devices, electrical components, etc., can solve problems affecting device efficiency and poor conductivity of quasi-two-dimensional perovskite, and achieve improved device performance. Performance, exciton binding energy, and carrier recombination efficiency are high, and the effect of reducing content

Active Publication Date: 2020-12-01
HEFEI UNIV OF TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the incorporation of macromolecular organic cations will make the conductivity of quasi-two-dimensional perovskites worse, thereby affecting the device efficiency.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of blue light emitting diode based on Mg &lt;2+&gt; doped quasi-two-dimensional perovskite material
  • Preparation method of blue light emitting diode based on Mg &lt;2+&gt; doped quasi-two-dimensional perovskite material
  • Preparation method of blue light emitting diode based on Mg &lt;2+&gt; doped quasi-two-dimensional perovskite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The embodiments of the present invention will be described in detail below. Based on the technical solution of the present invention, this embodiment provides detailed implementation and specific operation process. The protection scope of the present invention includes but not limited to the following examples.

[0025] Implementation based on Mg 2+ A method for preparing a blue light-emitting diode doped with a quasi-two-dimensional perovskite material, comprising the following steps:

[0026] (1) Cleaning of ITO glass substrate:

[0027] The ITO glass substrate was ultrasonically treated with ITO cleaning solution and water for 10 minutes, then dried with nitrogen gas, and placed on a hot stage at 120°C for 10 minutes.

[0028] (2) UV ozone treatment of ITO glass substrate:

[0029] Place the ITO glass substrate treated in step (1) in an ultraviolet cleaning machine for 15 minutes. This step can effectively decompose the organic residues on the surface of the ITO ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of a blue light emitting diode based on an Mg <2+> doped quasi-two-dimensional perovskite material and belongs to the technical field of perovskite light emitting device preparation processes. Blue light PeLEDs are prepared by taking an Mg <2+> doped PEA2CsPb2Br7 thin film as a light emitting layer. As doped Mg <2+> replaces Pb <2+> in perovskite crystal lattices, a band gap is widened, and spectrum blue shift is caused. Moreover, Mg <2+> is doped, so that the surface defect formation energy of the perovskite crystals is increased, the defect stateformation is effectively inhibited, the non-radiative recombination is reduced, and the device efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of preparation technology of perovskite light-emitting devices, in particular to a Mg-based 2+ Preparation method of blue light-emitting diode of doped quasi-two-dimensional perovskite material, which will be doped with Mg 2+ The quasi-two-dimensional perovskite PEA 2 CaPb 2 Br 7 Preparation of blue perovskite light-emitting diodes as light-emitting layer. Background technique [0002] In recent years, perovskite has gained widespread attention in the field of light-emitting diodes due to its characteristics such as tunable emission spectrum, high emission color purity, and high fluorescence quantum efficiency. At present, the research on perovskite light-emitting diodes (PeLEDs) has made great progress, and its external quantum phase ratio has reached more than 20%. However, compared with green light and red light, it is still a big challenge to realize stable and efficient blue PeLED. Compared with t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01L51/50H01L51/56
CPCH10K71/30H10K50/17H10K71/00
Inventor 胡俊涛林钰涵吴涵罗派峰许凯王向华
Owner HEFEI UNIV OF TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com