Dresden, Germany
Dresden, Germany

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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.


Patent
Novaled GmbH and University of Rennes 1 | Date: 2016-04-06

The present invention relates to an organic electronic device , comprising a first electrode (11), a second electrode (14), and, between the first and the second electrode, a substantially organic layer (13) comprising a heterocyclic compound bearing at least one lithoxy group and containing at least one heterocyclic ring comprising a phosphine oxide group directly bound to three carbon atoms; a compound for use in such an organic electronic device and to a semiconducting material comprising the respective compound.


The present invention is directed to a semiconducting material comprising: a compound according to formula (I):^(1), R^(2) and R^(3) are independently selected from C_(1)-C_(30)-alkyl, C_(3)-C_(30) cycloalkyl, C_(2)-C_(30)-heteroalkyl, C_(6)-C_(30)-aryl, C_(2)-C_(30)-heteroaryl, C_(1)-C_(30)-alkoxy, C_(3)-C_(30)-cycloalkyloxy, C_(6)-C_(30)-aryloxy, and from structural unit having general formula E-A-, wherein- A is a C_(6)-C_(30) phenylene spacer unit, and- E is an electron transporting unit that is selected from C_(10)-C_(60) aryl and C_(6)-C_(60) heteroaryl comprising up to 6 heteroatoms independently selected from O, S, P, Si and B and that comprises a conjugated system of at least 10 delocalized electrons, and- at least one group selected from R^(1), R^(2) and R^(3) has the general formula E-A-; andi) at least one complex of a monovalent metal having formula (II):- M^(+) is a positive metal ion bearing a single elementary charge, and each of A^(1), A^(2), A^(3) and A^(4) is independently selected from H, substituted or unsubstituted C_(6)-C_(20) aryl and substituted or unsubstituted C_(2)-C_(20) heteroaryl, wherein a heteroaryl ring of at least 5 ring-forming atoms of the substituted or unsubstituted C_(2)-C_(20) heteroaryl comprises at least one hetero atom selected from O, S and N.


The application relates to a method of manufacturing an organic electronic device, comprising steps of: providing a layered device structure, the layered device structure comprising a plurality of electrodes and an electronically active region being provided in electrical contact with at least one of the plurality of electrodes, said providing of the layered device structure comprising steps of providing an organic semiconducting layer, applying a contact improving layer to the organic semiconducting layer by depositing an organic dopant material, wherein the organic dopant material is soluble in Hydrofluorether, depositing a layer material on the contact improving layer, and structuring the contact improving layer. Furthermore, an organic electronic device is disclosed.


The present invention is directed to matrix compounds and an organic light-emitting diode (OLED) comprising an emission layer and an electron transport layer stack of at least two electron transport layers, wherein a first electron transport layer and a second electron transport layer comprises at least one matrix compound, wherein- the matrix compound or compounds of the first electron transport layer is/are different to the matrix compound or compounds of the second electron transport layer; and in addition,- the first electron transport layer comprises a dopant of a lithium halide and/or lithium organic complex; and- the second electron transport layer is free of a dopant; wherein- at least one matrix compound of the second electron transport layer having the chemical formula Ia, Ib and/or Ic:Ar =substituted or unsubstituted arylene with 6 to 20 ring-forming carbon atoms; or carbazolylene;ET =substituted or unsubstituted aryl group with 13 to 40 ring-forming carbon atoms; or a substituted or unsubstituted heteroaryl group with 14 to 40 ring-forming atoms.


The present invention relates to an organic light-emitting diode (100) comprising an emission layer (150) and at least one electron transport layer (161), wherein the at least one electron transport layer (161) comprises at least one matrix compound and at least two lithium compounds.


The present invention relates to a process for preparation of an electrically doped semicon-ducting material comprising a [3]-radialene p-dopant or for preparation of an electronic device containing a layer comprising a [3]-radialene p-dopant, the process comprising the steps (i) loading an evaporation source with the [3]-radialene p-dopant and (ii) evaporating the [3]-radialene p-dopant at an elevated temperature and at a reduced pressure, wherein the [3]-radialene p-dopant is selected from compounds having a structure according to formula (I)^(1) and A^(2) are independently aryl- or heteroaryl-substituted cyanomethylidene groups.


The present invention relates to an organic light-emitting diode comprising an emission layer and an electron transport layer stack of at least two electron transport layers, wherein a first electron transport layer and a second electron transport layer comprises at least one matrix compound, wherein- the matrix compound or compounds of the first electron transport layer is/are different to the matrix compound or compounds of the second electron transport layer; and in addition,- the first electron transport layer comprises a dopant of a lithium halide and/or lithium organic complex; and- the second electron transport layer is free of a dopant.


The present invention relates to a semiconducting material comprising an electron transport matrix compound comprising at least one electron transporting structural moiety and at least one polar structural moiety; a matrix compound and electronic device utilizing the semiconducting material.

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