Semiconducting light emitting material

Patent metadata

Field	Value
Publication number	US-11427756-B2
Application number	US-201816755181-A
Country	US
Kind code	B2
Filing date	Oct 10, 2018
Priority date	Oct 13, 2017
Publication date	Aug 30, 2022
Grant date	Aug 30, 2022

Abstract

Suggested is a semiconductor nano-sized light emitting material having a ligand.

First claim

The invention claimed is:

1. A semiconductor nano-sized light emitting material comprising of a core, optionally one or more shell layers and a ligand coated onto the core or the outermost surface of the shell layers,
wherein the ligand is

2. The material according to claim 1 , wherein said core is formed from one, two or more compounds according to formula (IV),
[A 1 B 1 ]  (IV)

in which
[A 1 ] stands for a metal selected from the group consisting of zinc, cadmium, indium or their mixtures;
[B 1 ] stands for a non-metal selected from the group consisting of sulphur, selenium, phosphorous and their mixtures.

3. The material of claim 2 , wherein [A 1 B 1 ] stands for one, two or more compounds selected from the group consisting of CdS, CdSe, CdSeS, CdZnS, ZnS, ZnSe, ZnSeS, and InP.

4. The material according to claim 1 , wherein said shell or said shells are formed from one, two or more compounds according to formula (V),
[A 2 B 2 ]  (V)

in which
[A 2 ] stands for a metal selected from the group consisting of zinc, cadmium or their mixtures;
[B 2 ] stands for a non-metal selected from the group consisting of sulphur, selenium, tellurium and their mixtures.

5. The material of claim 4 , wherein [A 2 B 2 ] stands for one, two or more compounds selected from the group consisting of CdS, CdSe, CdSeS, CdZnS, ZnS, ZnSe and ZnSeS, ZnSeSTe.

6. A composition comprising at least one semiconductor nano-sized light emitting material according to claim 1 , and at least one matrix material.

7. A formulation comprising at least one semiconductor nano-sized light emitting material according to claim 1 , and at least one solvent.

8. An electronic device, optical device or a biomedical device comprising in said device semiconductor nano-sized light emitting material according to claim 1 .

9. An optical medium comprising in said medium the semiconductor nano-sized light emitting material according to claim 1 .

10. An optical device comprising said optical medium according to claim 9 .

Assignees

• Merck Patent Gmbh

Inventors

• Khalil Sanaa
• Oded Kobi
• Glozman Denis
• Shaviv Ehud

Classifications

• H10H20/8512

  Wavelength conversion materials · CPC title

• C09K11/703

  with zinc or cadmium · CPC title

• A61B90/36

  Image-producing devices or illumination devices not otherwise provided for · CPC title

• C09K11/0883

  Arsenides; Nitrides; Phosphides · CPC title

• C07C333/16

  Salts of dithiocarbamic acids · CPC title