Unlock instant, AI-driven research and patent intelligence for your innovation.

Light-emitting element and light-emitting device

一种发光元件、有机化合物的技术，应用在有机发光器件、电致发光光源、电气元件等方向，能够解决易碎、低耐久性、拖延有机EL元件发展等问题，达到防止短路的效果

Inactive Publication Date: 2007-09-12
SEMICON ENERGY LAB CO LTD
View PDF3 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, these organic EL elements have problems of heat resistance and durability, which delay the development of organic EL elements
Since organic EL elements are generally formed by laminating organic thin films using organic compounds represented in the following Patent Document 1, low durability of organic compounds and fragile organic thin films are considered to be the cause of the above-mentioned problems

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
  • Light-emitting element and light-emitting device
  • Light-emitting element and light-emitting device
  • Light-emitting element and light-emitting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108] In Example 1, considering a layer in which an organic compound and an inorganic compound are mixed, a test case of a combination of an organic compound and an inorganic compound will be exemplified.

example 1

[0110] First, a glass substrate is fixed in a substrate holder in a vacuum deposition system. Then, NPB and molybdenum(VI) oxide were respectively placed in different evaporation sources of resistance heating type, and a mixed layer including NPB and molybdenum oxide was formed by co-evaporation while evacuating. In this case, NPB was evaporated at a deposition rate of 0.4 nm / s, and molybdenum oxide was evaporated so that the weight ratio of molybdenum oxide to NPB was 1 / 4. Therefore, the molar ratio is NPB:molybdenum oxide=1:1. It is to be noted that the film thickness of the mixed layer was 50 nm.

[0111] The results of measuring the transmission spectrum of the thus deposited mixed layer including NPB and molybdenum oxide are shown by 1-A in FIG. 10 . For comparison, the transmission spectrum of the NPB film (1-B in FIG. 10 ) and the transmission spectrum of the molybdenum oxide film (1-C in FIG. 10 ) are shown together.

[0112] As understood from FIG. 10, in the case ...

example 2

[0115] The transmission spectrum of a mixed film including m-MTDAB and molybdenum oxide, which was produced in the same manner as in Proof Example 1 by substituting m-MTDAB for NPB in Proof Example 1, was measured. This result is shown by 2-A in Fig. 11 . For comparison, the transmission spectrum of the m-MTDAB film (2-B in FIG. 11 ) and the transmission spectrum of the molybdenum oxide film (2-C in FIG. 11 ) are shown together.

[0116] As understood from FIG. 11, in the case of the mixed film shown by 2-A, new absorption was observed (the circled portion in FIG. 11), in each film of m-MTDAB or the molybdenum oxide film itself This was not observed in any of the cases. It is believed that this is because electrons are donated and accepted between m-MTDAB and molybdenum oxide, and thus molybdenum oxide accepts electrons from m-MTDAB to generate holes in m-MTDAB.

[0117] Therefore, the mixed layer including m-MTDAB and molybdenum oxide deposited in Evidence Example 2 can be ...

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 present invention provides a light-emitting element sandwiching a composite layer in which an organic compound and an inorganic compound are mixed between a first electrode and a second electrode, where the composite layer includes a first layer including a first organic compound and a first inorganic compound that exhibits an electron accepting property to the first organic compound (serves as an electron acceptor), a second layer including a second organic compound and a second inorganic compound, and a third layer including a third organic compound and a third inorganic compound that exhibits an electron donating property to the third organic compound (serves as an electron acceptor).

Description

technical field [0001] The present invention relates to a light emitting element, in particular, to a light emitting element including a composite layer in which an organic compound and an inorganic compound are mixed, and further, to a light emitting device including the light emitting element. Background technique [0002] Recently, a light-emitting element that provides high luminance by applying a current to an organic compound, such as a light-emitting element using a light-emitting organic compound (referred to as an organic light-emitting diode [OLED] or an organic EL element, and hereinafter referred to as an organic EL element), has attracted attention. Many concerns. [0003] In the basic structure of an organic EL element, a layer (light-emitting layer) including a light-emitting organic compound is sandwiched between a pair of electrodes. By applying a voltage to the element, electrons and holes are respectively transported from the pair of electrodes to the lig...

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 & Authority Applications(China)
IPC IPC(8): H01L51/50
CPCH01L51/5012H01L51/0059H01L51/0081H01L51/5048H10K85/631H10K85/324H10K50/14H10K50/11H05B33/20H10K10/82H10K2102/301
Inventor 山崎舜平池田寿雄濑尾哲史熊木大介坂田淳一郎
Owner SEMICON ENERGY LAB CO LTD
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