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Formulations of luminescent compounds

A technology of luminescent compounds and preparations, applied in the application of luminescent coatings, luminescent materials, luminescent coatings, etc., can solve the problems of rare iridium and platinum, expensive metals, and damage to the economy of the manufacturing process

Inactive Publication Date: 2016-11-09
MERCK PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Despite the good results achieved with metalorganic iridium and platinum complexes, they also have a series of disadvantages: iridium and platinum are rare and expensive metals
The failure rate especially in the manufacture of organic electronic devices such as OLEDs is always high, which negatively impairs the economics of the manufacturing process

Method used

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  • Formulations of luminescent compounds
  • Formulations of luminescent compounds
  • Formulations of luminescent compounds

Examples

Experimental program
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Effect test

example 1

[0167] determination method

[0168] Determine HOMO, LUMO, singlet and triplet energy levels

[0169] The energy levels of the molecular orbitals and the lowest triplet state T of the material 1 or the lowest excited singlet state S 1 The energy of is determined by quantum chemical calculations. The program package "Gaussian09, Revision D.01" (Gaussian AG) was used for this purpose. To calculate metal-free organic species (labeled with the "org." method), first, a geometry optimization is performed with the semi-empirical method AM1 (Gaussian input line "#AM1opt") with Charge 0 and Multiplicity 1 . Subsequently, energy calculations (single point) for the electronic ground state and triplet state are performed based on the optimized geometry. Here the TDDFT method (time-dependent density functional theory) B3PW91 (charge 0, multiplicity 1) with basis set 6-31G(d) (Gaussian input line "#B3PW91 / 6-31G(d)td= (50-50, nstates=4)"). The geometry (charge 0, multiplicity 1) was opt...

example 2

[0191] Device example

[0192] The materials required for the following examples are shown in Table 1. The attached HOMO and LUMO levels and the S 1 and T 1 Indicated in Table 2.

[0193] Vacuum Processed OLEDs

[0194] Wet cleaning (lab wash machine, Merck Extran cleaner) with a structured ITO (indium zinc oxide)-coated glass plate with a thickness of 50 nm followed by heating at 250 °C in a nitrogen atmosphere 15 minutes long and treated with oxygen plasma for 130s long before coating. A plasma-treated glass plate forms the substrate onto which the OLED is applied. The substrate is kept in vacuum prior to coating. Coating starts no later than 10 minutes after plasma treatment.

[0195] The material is thermally vapor deposited in a vacuum chamber. In this case, the emission layer is always composed of at least one host material (host material) and an emission material. A matrix material or matrix materials are mixed in specific volume fractions into the emission mat...

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Abstract

The invention relates to a formulation containing organic materials for producing organic electronic devices that have a low failure rate.

Description

technical field [0001] The invention relates to a formulation comprising an emitting compound with a very small singlet-triplet gap and its use for the production of organic electronic components. Background technique [0002] The construction of special organic electronic devices in which organic semiconductors are used as functional materials is disclosed, for example, in US 4539507, US 5151629, EP 0676461 and WO 98 / 27136. It concerns organic light-emitting diodes (OLEDs), ie special devices consisting of a group of organic electroluminescent devices. In particular, metalorganic iridium complexes and platinum complexes are used here as emission materials, which, instead of being fluorescent, exhibit phosphorescence (M.A. Baldo et al., Appl. Phys. Lett. 1999, 75, 4-6). For quantum-mechanical reasons, a maximum of four-fold energy and power efficiencies are possible in the case of metal-organic compounds used as phosphorescent emitters. [0003] Despite the good results ac...

Claims

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Application Information

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IPC IPC(8): C09K11/06C07D209/82H01J9/22H01L51/00
CPCC07D209/82C09K11/06H01J9/223C09K2211/1011C09K2211/1014C09K2211/1033C09K2211/1044C09K2211/1048C09K2211/1059C09K2211/1092C09K2211/185C07D413/14C07D221/20C07D403/04C07D403/10C07D403/14C07D413/10C07D251/24C09D5/22C09K11/025H10K71/15H10K85/342H10K50/11H10K2101/40H10K2101/90H10K2101/00H10K2101/30H10K2102/361H10K2101/20H10K85/654H10K85/115H10K85/151H10K85/615H10K85/6572H10K50/15H10K50/16H10K71/00H10K71/164H10K2101/10C09D5/24C09K2211/1007C09K2211/1029
Inventor 埃米尔·侯赛因·帕勒姆菲利普·施特塞尔克里斯托夫·普夫卢姆安雅·雅提斯奇约阿希姆·凯泽安娜·阿耶
Owner MERCK PATENT GMBH
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