Organic light emitting diode and organic light emitting device including same

A light-emitting diode, organic technology, applied in the direction of organic light-emitting devices, organic light-emitting device parameters, light-emitting materials, etc., can solve the problems of short light-emitting life and inapplicability of metal complexes

Pending Publication Date: 2022-05-10
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the luminescence lifetime of metal complexes as representative phosphorescent materials is too short for commercial devices

Method used

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  • Organic light emitting diode and organic light emitting device including same
  • Organic light emitting diode and organic light emitting device including same
  • Organic light emitting diode and organic light emitting device including same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0277] Embodiment 1 (Ex.1): the manufacture of OLED

[0278] A compound 1-1 (HOMO: -5.6 eV, LUMO: -2.7 eV) including the compound 1-1 (HOMO: -5.6 eV, LUMO: -2.7 eV) of the formula 3 introduced therein as the first compound DF, a compound 2-1 (HOMO: -5.6 eV) of the formula 6 as the second compound FD were produced. eV, LUMO: -2.9eV) and mCBP (HOMO: -6.0eV, LUMO: -2.5eV) EML OLED. The ITO substrates were washed by UV-ozone treatment before use and transferred to a vacuum chamber for deposition of the light-emitting layer. Subsequently, in the following order at 10 -7 under torr vacuum The set deposition rate is to deposit the anode, emissive layer and cathode by vapor deposition in a heated boat:

[0279] Anode (ITO, 50nm); HIL (HAT-CN, 7nm); HTL (NPB, 45nm); EBL (TAPC, 10nm); EML (mCBP (89% by weight), compound 1-1 (10% by weight) and compound 2-1 (1% by weight), 35 nm); HBL (B3PYMPM, 10 nm); ETL (TPBi, 25 nm); EIL (LiF);

Embodiment 2

[0280] Embodiment 2 (Ex.2): the manufacture of OLED

[0281] OLEDs were fabricated using the same materials as in Example 1, except that Compound 1-2 (HOMO: -5.5eV, LUMO: -2.6eV) of Formula 3 was used as the first compound instead of Compound 1-1 in EML.

Embodiment 3

[0282] Embodiment 3 (Ex.3): the manufacture of OLED

[0283] OLEDs were fabricated using the same materials as in Example 1, except that Compound 2-2 (HOMO: -5.4eV, LUMO: -2.8eV) of Formula 6 was used as the second compound instead of Compound 2-1 in EML.

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Abstract

Disclosed are an organic light emitting diode (OLED) and an organic light emitting device including the OLED. The organic light emitting diode (OLED) includes at least one light emitting material layer (EML) disposed between two electrodes and including a first compound including a fused heteroaromatic ring having at least one nitrogen atom and a second compound including a boron-based compound. The first compound and the second compound may be the same luminescent material layer or adjacent luminescent material layers. Using the first compound and the second compound and adjusting their energy levels, the OLED can reduce its driving voltage and improve its luminous efficiency.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of Korean Patent Application No. 10-2020-0149127 filed in the Republic of Korea on November 10, 2020, the entire contents of which are incorporated herein by reference. technical field [0003] The present disclosure relates to organic light emitting diodes, and more particularly, to organic light emitting diodes having excellent light emitting characteristics, and organic light emitting devices having the same. Background technique [0004] As display devices become larger, there is a demand for flat panel display devices with a lower space footprint. Among flat panel display devices, display devices using organic light emitting diodes (OLEDs) have been in the spotlight. [0005] OLEDs can be formed to be thinner than thin film, and can achieve unidirectional or bidirectional images depending on the electrode configuration. In addition, OLEDs can be formed on flexible transparen...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H01L51/50H01L51/54H01L27/32
CPCH10K59/12H10K85/636H10K85/322H10K85/6572H10K50/11H10K2101/40H10K50/121H10K50/13H10K50/125H10K85/657H10K2101/30H10K2101/20C09K11/06H10K59/00H10K2101/00H10K2101/90
Inventor崔益朗柳慧根李烔仑金捘演
OwnerLG DISPLAY CO LTD