Novaled GmbH

Dresden, Germany

Novaled GmbH

Dresden, Germany
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Patent
Novaled GmbH | Date: 2017-05-17

The present invention relates to a semiconducting material comprising(i) a substantially covalent matrix material consisting of at least one substantially covalent matrix compound,(ii) at least one first metal selected from the group consisting of Li, Na, K, Rb, and Cs, and(iii) at least one second metal selected from the group consisting of Zn, Hg, Cd and Te,electronic devices comprising such materials and processes for preparing the same.


Patent
Novaled GmbH | Date: 2017-05-17

The present invention relates to a metallic layer adjacent to a semiconducting layer comprising a substantially covalent matrix material, the metallic layer comprising at least one first metal and at least one second metal, wherein a) the first metal is selected from the group consisting of Li, Na, K, Rb, Cs; and b) the second metal is selected from the group consisting of Zn, Hg, Cd, Te, electronic devices comprising such materials and process for preparing the same.


Patent
Novaled GmbH | Date: 2017-05-17

Process for preparing a metal containing layer, the process comprising (i) at least one step of co-vaporization, at a pressure which is lower than 10^(-2) Pa, of a) at least one first metal selected from Li, Na, K, Rb and Cs and b) at least one second metal selected Mg, Zn, Hg, Cd and Te from a metal alloy provided in a first vaporization source which is heated to a temperature between 100 C and 600 C, and (ii) at least one subsequent step of deposition of the first metal on a surface having a temperature which is below the temperature of the first vaporization source, wherein in step (i), the alloy is provided at least partly in form of a homogeneous phase comprising the first metal and the second metal, electronic devices comprising such materials and process for preparing the same.


The present invention relates to a hole injection layer (130) for an OLED comprising a triarylamine compound doped with a charge neutral metal amide compound, characterized in that the hole injection layer has a thickness of at least about 20 nm to about 1000 nm and the charge neutral metal amide compound has the Formula Ia:


Patent
Novaled GmbH and Clausthal University of Technology | Date: 2017-03-29

The present invention relates to an organic electroluminescent device comprising at least one semiconductive layer comprising a compound of formula (I)wherein R^(1), R^(3) and R^(7) are independently selected from a group consisting of H, D, C_(1)-C_(16) alkyl and C_(1)-C_(16) alkoxy;R^(2), R^(4), R^(5) and R^(6) are independently selected from a group consisting of H, D, C_(1)-C_(16) alkyl, C_(1)-C_(16) alkoxy and C_(6)-C_(20) aryl;Ar^(1) is selected from substituted or unsubstituted C_(6)-C_(20) aryl, wherein, in case that Ar^(1) is substituted, the substituents are independently selected from a group consisting of D, C_(1)-C_(12) alkyl, C_(1)-C_(16) alkoxy and C_(6)-C_(20) aryl;and Ar^(2) is selected from a group consisting of H, D, substituted or unsubstituted C_(6)-C_(40) aryl andspecific dibenzooxane and dibenzofuran derivaties.


Patent
Novaled GmbH | Date: 2017-03-29

The present invention relates to an organic electroluminescent device comprising an anode, a cathode, an emission layer, an undoped electron transport layer comprising a first matrix compound, and an electron injection layer comprising a second matrix compound and an alkali organic complex and/or alkali halide, wherein the undoped electron transport layer and the electron injection layer are arranged between the emission layer and the cathode, wherein the reduction potential of the first matrix compound is less negative than the reduction potential of 9,10-di(naphthalen-2-yl)anthracene and more negative than the reduction potential of 4,4-bis(4,6-diphenyl-1,3,5-triazin-2-yl)biphenyl, wherein the reduction potential in both cases is measured against Fc/Fc^(+) in tetrahydrofurane; and the dipole moment of the first matrix compound is selected 0 Debye and 2.5 Debye and the dipole moment of the second matrix compound is selected > 2.5 and < 10 Debye.


The present invention relates to metal amides of general Formula Ia and for their use as hole injection layer (130) for an Organic light-emitting diode (100), and a method of manufacturing Organic light-emitting diode (OLED) comprising an hole injection layer (HIL) containing a metal amide of general Formula Ia:


Patent
Novaled GmbH | Date: 2017-03-29

The present invention relates to an organic electroluminescent device comprising an anode, a cathode, an emission layer, an undoped electron transport layer comprising a first matrix compound, and an electron injection layer comprising a second matrix compound and an alkali organic complex and/or alkali halide, wherein the undoped electron transport layer and the electron injection layer are arranged between the emission layer and the cathode, wherein the reduction potential of the first matrix compound is less negative than the reduction potential of 9, 10-di(naphthalen-2-yl)anthracene and more negative than the reduction potential of 4,4-bis(4,6-diphenyl-1,3,5-triazin-2-yl)biphenyl, wherein the reduction potential in both cases is measured against Fc/Fc^(+) in tetrahydrofurane; and the dipole moment of the first matrix compound is selected 0 Debye and 2.5 Debye and the dipole moment of the second matrix compound is selected > 2.5 and < 10 Debye.


Grant
Agency: European Commission | Branch: H2020 | Program: RIA | Phase: ICT-29-2014 | Award Amount: 3.93M | Year: 2015

The overall objective of the PHEBE project is to develop innovative, high-efficiency, blue emitters for white OLEDS, which will create a major breakthrough in the cost performance of OLED lighting. To produce the innovative blue emitters, two new types of molecular systems without rare earth complexes - will be investigated: intramolecular charge transfer systems that enable thermally activated delayed fluorescence (ICT-TADF) intermolecular exciplex charge transfer systems that enable thermally activated delayed fluorescence (Exciplex-TADF) In order to develop the ICT-TADF and Exciplex-TADF based emitters, the following scientific and technical objectives will be targeted: Objective 1: Screen potential ICT-TADF and Exciplex-TADF compounds with theoretical models Objective 2: Synthesise the most promising ICT-TADF and Exciplex-TADF model compounds Objective 3: Characterise and select the best ICT-TADF and Exciplex-TADF synthesised compounds Objective 4: Design white stack units employing the selected TADF based emitter and block materials Objective 5: Design close-to-production OLED lighting panel demonstrators To show the projects overall objective has been achieved, white stack tandem units (2 x 2 cm2 with 90 nm ITO) and OLED lighting panel demonstrators (e.g. 25 cm2 circular panels) - based on the new blue emitters will be produced and tested that meet the performance targets indicated in the H2020 call ICT 29 2014. The PHEBE project will be undertaken by a strong consortium of partners that span the complete value chain for the development and commercialisation of the new, high-efficiency, blue emitters for white OLEDS: OLED lighting research organisations (UDUR, TUD and KTU), OLED component producer (Novaled), and OLED lighting device manufacturer (Astron-FIAMM). Overall, the PHEBE consortium is well-balanced in terms of the number of industrial and academic partners as well as their geographic spread.


Grant
Agency: European Commission | Branch: H2020 | Program: RIA | Phase: NMP-20-2014 | Award Amount: 5.00M | Year: 2015

EXTMOS main objective is to create a materials model and the related user friendly code that will focus on charge transport in doped organic semiconductors. Its aims are (i) to reduce the time to market of (a) multilayer organic light emitting devices, OLEDs, with predictable efficiencies and long lifetimes (b) organic thin film transistors and circuits with fast operation. (ii) to reduce production costs of organic devices by enabling a fully solution processed technology. Development costs and times will be lowered by identifying dopants that provide good device performance, reducing the number of dopant molecules that need to be synthesized and the materials required for trial devices. (iii) to reduce design costs at circuit level through an integrated model linking molecular design to circuit operation. Screening imposes the following requirements from the model 1. An improved understanding of dopant/host interactions at the molecular level. Doping efficiencies need to be increased to give better conducting materials. For OLEDs, dopants should not absorb visible light that lowers output nor ultraviolet light that can cause degradation. 2. An ability to interpret experimental measurements used to identify the best dopants. 3. The possibility of designing dopants that are cheap and (photo)chemically robust and whose synthesis results in fewer unwanted impurities, and that are less prone to clustering. The EXTMOS model is at the discrete mesoscopic level with embedded microscopic electronic structure and molecular packing calculations. Modules at the continuum and circuit levels are an integral part of the model. It will be validated by measurements on single and multiple layer devices and circuits and exploited by 2 industrial end users and 2 software vendors. US input is provided by an advisory council of 3 groups whose expertise complements that of the partners.

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