Method for fabricating electroluminescent reinforced structure of organic light emitting diode

A technology for light-emitting diodes and luminescence enhancement, which is applied to circuits, electrical components, and electric solid-state devices. It can solve problems such as limiting the effect of enhancement, difficulty in large-area fabrication, and expensive production methods for focused particle beams. It achieves increased luminous intensity, Easy to make, the effect of increasing the luminous intensity

Inactive Publication Date: 2013-04-03
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But focused particle beams are too expensive to fabricate and not easy to fabricate over large areas
Dong-Ming Yeh et al published an article titled Localized surface plasmon-induced emission enhancement of a green light-emitting diode in Nanotechnology in 2008, and proposed to introduce localized surface plasmon effect by thermal annealing metal thin film, but the extinction of the film The section curve is too flat, limiting its enhanced effect

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
  • Method for fabricating electroluminescent reinforced structure of organic light emitting diode
  • Method for fabricating electroluminescent reinforced structure of organic light emitting diode
  • Method for fabricating electroluminescent reinforced structure of organic light emitting diode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 As shown, this embodiment is an OLED electroluminescence enhancement structure, and its specific implementation steps are as follows:

[0036] (1) The selected organic luminescent material is Alq 3 , so that it is both an electron transport layer and a light emitting layer, and its luminous peak is around 520nm;

[0037] (2) Select the metal material magnesium-silver alloy as the cathode of the OLED, and use PS ball self-assembly technology on the cathode to make a hexagonal periodic metallic silver structure; the specific steps are as follows:

[0038] a. Determine the luminous peak wavelength λ and refractive index of the organic light-emitting material to be used;

[0039] b. Establish a hexagonal metal periodic structure model;

[0040] c. Set the parameters of the hexagonal metal periodic structure, perform simulation, and calculate the extinction cross-section spectrum of the hexagonal metal periodic structure;

[0041] The formula for calcula...

Embodiment 2

[0051] It has a structure similar to Example 1, and the specific parameter selection can be changed:

[0052] (1) The selected organic luminescent material is Alq 3 , so that it is both an electron transport layer and a light emitting layer, and its luminous peak is around 520nm;

[0053] (2) Select the metal material aluminum as the cathode of the OLED, and use PS ball self-assembly technology on the cathode to make a hexagonal periodic metal silver structure; the specific steps are as follows:

[0054] a. Determine the luminous peak wavelength λ and refractive index of the organic light-emitting material to be used;

[0055] b. Establish a hexagonal metal periodic structure model;

[0056] c. Set the parameters of the hexagonal metal periodic structure, perform simulation, and calculate the extinction cross-section spectrum of the hexagonal metal periodic structure;

[0057] The formula for calculating the extinction cross-section spectrum is as follows:

[0058] σ ext ...

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

A method for fabricating an electroluminescent reinforced structure of an organic light emitting diode comprises the following steps: (1) selecting an organic light emitting material as an electron transmission layer and a light emitting layer, wherein the organic light emitting material has a wavelength of lambda at the light emitting peak; (2) selecting a metal material as the cathode of the OLED (organic light emitting diode) structure, and forming a periodic hexagonal lattice on the cathode; (3) forming a laminar structure comprising the metal cathode, the organic light emitting material,a hole transmission layer and an ITO (indium-tin oxide) conductive glass structure in sequence; and (4) properly selecting the period of the metal hexagonal lattice, and applying the voltage to greatly improve the luminous intensity of the OLED.

Description

technical field [0001] The invention relates to a method for realizing an OLED (organic light-emitting diode) electroluminescence enhancement structure by using a two-dimensional metal photonic crystal. Background technique [0002] Surface plasmon technology, as a hot technology in scientific research at this stage, is widely used in nano-focusing, photolithography, biosensing, solar technology, and LED / OLED luminescence enhancement. [0003] In 2004, Koichi Okamoto's group published an article entitled "Surface-Plasmon-enhanced light emitters based on InGaN quantum wells" on Nature Materials, in which it was proposed that the introduction of surface plasmons will be related to a part of electron-hole pairs Recombination energy coupling, so that the recombination of electron-hole pairs has an additional recombination mode on the basis of the original radiative recombination and non-radiative recombination, thereby accelerating its recombination rate. A large amount of ener...

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
Patent Type & AuthorityPatents(China)
IPC IPC(8): H01L51/56H01L51/52
Inventor杜春雷张茂国董晓春邓启凌尹韶云魏全忠
OwnerINST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI