阅读说明：本技术 均质混合物 (Homogeneous mixture ) 是由 雷米·阿纳米安 白宗协 奥利弗·考夫霍尔德 于 2018-06-25 设计创作，主要内容包括：本发明涉及一种用于制备包含至少两种可蒸发的有机化合物的均质组合物的方法,所述方法包括在可旋转容器中在加热并旋转下混合所述化合物。本发明还涉及这种均质组合物在制备电子器件中的用途,以及涉及在至少一个功能有机层中包含所述均质组合物的电子器件。(The present invention relates to a process for the preparation of a homogeneous composition comprising at least two vaporizable organic compounds, which process comprises mixing the compounds in a rotatable container under heat and rotation. The invention also relates to the use of such a homogeneous composition for the preparation of an electronic device, and to an electronic device comprising said homogeneous composition in at least one functional organic layer.)

1. A process for preparing a homogeneous composition comprising at least two vaporizable organic compounds, in particular a composition capable of being deposited under vacuum, comprising:

a. providing a rotatable container containing the at least two vaporizable organic compounds,

b. heating the container to form a melt while rotating the container in a continuous manner to homogenize the melt.

2. The method of claim 1, wherein the at least two vaporizable organic compounds are independently from each other selected from host or host materials, light emitting materials, electron injecting materials, electron transporting materials, electron blocking materials, wide band gap materials, hole injecting materials, hole transporting materials, hole blocking materials, exciton blocking materials, n-type dopants or p-type dopants, and any combination thereof.

3. The method of claim 1 or 2, wherein the at least two vaporizable organic compounds are host materials.

4. The method of claim 1 or 2, wherein the at least two vaporizable organic compounds are electron transport materials.

5. The method according to claim 1 or 2, wherein the at least two vaporizable organic compounds are hole transport materials.

6. The method according to claim 1 or 2, wherein one of the at least two vaporizable organic compounds is a host material, preferably a host material having electron-transporting properties or a host material having hole-transporting properties, most preferably a host material having electron-transporting properties, and the other is a wide band gap material.

7. The method of claim 1 or 2, wherein one of the at least two vaporizable organic compounds is an electron transport material and the other is an n-type dopant.

8. The method of claim 1 or 2, wherein one of the at least two vaporizable organic compounds is a hole transport material and the other is a p-type dopant.

9. The method according to one or more of claims 1 to 8, wherein the heating and rotating is at 10^-3To 10^-8Under reduced pressure of bar.

10. The method of one or more of claims 1-9, wherein the heating and rotating of the container is maintained for at least 1 hour after the melt is formed.

11. The method according to one or more of claims 1 to 10, wherein the rotational speed of the container is from 2 to 10 rpm.

12. Method according to one or more of claims 1 to 11, wherein the container is rotated about a substantially horizontally arranged rotation axis.

13. The method according to one or more of claims 1 to 12, further comprising:

c. cooling the homogeneous melt obtained in step b under rotation.

14. A homogeneous composition comprising at least two vaporizable organic compounds, which is obtainable by the process according to one or more of claims 1 to 13 or is obtainable by the process according to one or more of claims 1 to 13.

15. Use of a homogeneous composition according to claim 14 or prepared according to the method of one or more of claims 1 to 13 for the preparation of an electronic device by evaporation of the composition from a single evaporation source.

16. A layer obtainable by evaporating the homogeneous composition according to claim 14 or the homogeneous composition prepared according to the method of one or more of claims 1 to 13 from a single evaporation source.

17. An electronic device comprising at least one layer according to claim 16, wherein the layer is preferably selected from the group consisting of an Electron Transport Layer (ETL), a Hole Blocking Layer (HBL), a Hole Transport Layer (HTL), an Electron Blocking Layer (EBL), a Hole Injection Layer (HIL), an Electron Injection Layer (EIL), and an emitting layer (EML).

18. The electronic device according to claim 17, wherein the device is selected from the group consisting of Organic Light Emitting Diodes (OLEDs), Polymer Light Emitting Diodes (PLEDs), Organic Light Emitting Transistors (OLETs), organic light emitting electrochemical cells (OLECs), Organic Field Quench Devices (OFQDs), Organic Light Emitting Electrochemical Transistors (OLEETs), Organic Field Effect Transistors (OFETs), Thin Film Transistors (TFTs), Organic Solar Cells (OSCs), organic laser diodes (O-lasers), Organic Integrated Circuits (OICs), Radio Frequency Identification (RFID) tags, photodetectors, sensors, logic circuits, memory elements, capacitors, charge injection layers, schottky diodes, planarising layers, antistatic films, conductive substrates or patterns, photoconductors, electrophotographic elements, organic solar concentrators, organic spintronic devices, and organic plasmon light emitting devices (OPEDs).

19. A method for preparing an electronic device according to claim 17 or 18, the method comprising:

a. a substrate is provided, and the substrate,

b. preparing a homogeneous composition comprising at least two vaporizable organic compounds according to the method of one or more of claims 1 to 13; and

c. evaporating the homogeneous composition from a single evaporation source to form a layer on the substrate.

Examples

Material

TMM-001(WO 04/093207、WO 05/054403)

TMM-002(WO 08/086851)

TMM-293 and TMM-310 are both available from Merck KGaA.

Preparation of premixed OLED Material compositions

The homogeneous mixture according to the invention is prepared using a rotatable mixing device as described above with reference to fig. 1.

To prepare a pre-mixed composition, each material that should be part of a homogeneous composition according to the present invention should be weighed using a precision balance and placed directly into a mixing chamber. The total weight of each mixture was 100 grams. The mixing chamber is mounted to a rotatable mixing device. The mixing chamber was rotated at 4rpm and at 10^-5Heat to 250 ℃ under a vacuum of bar. After melting, rotation and mixing were maintained under these conditions for 2 hours. After mixing was complete, the mixture was cooled to room temperature under rotation. Obtained by scraping and collectingThe solidified homogeneous mixture of (a).