Semiconducting light emitting material

A nano-luminescent material and semiconductor technology, applied in the direction of luminescent materials, semiconductor devices, organic chemistry, etc., can solve the problems that do not mention the ability of passivation traps, and achieve improved quantum yield stability, improved quantum yield stability, The effect of increased stability

Active Publication Date: 2020-05-26
MERCK PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these documents are silent on the specific metal complexes of these compounds and the ability to passivate traps when bound to the outer surface of quantum dots.

Method used

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  • Semiconducting light emitting material
  • Semiconducting light emitting material
  • Semiconducting light emitting material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0168] Embodiment 1: a semiconductor nanoluminescent material comprising a core, optionally one or more shells, and a ligand coated on the core or on the outermost surface of the shell or formed by the core, optionally One or more shells and a ligand coating the core or the outermost surface of the shells, wherein the ligand is at least one thiometalate salt.

Embodiment approach 2

[0169] Embodiment 2: The material according to Embodiment 1, wherein the ligand is represented by Formula (I)

[0170]

[0171] in,

[0172] M represents a divalent metal, preferably zinc, magnesium, copper or a mixture thereof;

[0173] X means -O- or -S- or -NR 2 -;

[0174] Y 1 Indicates -O- or -S-;

[0175] R 1 , R 2 independently of each other represent alkyl, alkenyl, alkynyl, aryl and / or aralkyl chains having 2 to 25 carbon atoms, optionally substituted by functional groups; or

[0176] Groups according to formula (II) and / or (III)

[0177] -(CHR 5 ) x O(CHR 5 ) y2 -NR 3 R 4 (II)

[0178] -CH 2 CHR 5 O) z R 6 (III)

[0179] R 3 , R 4 represent independently of each other straight or branched alkyl chains with 1 to 6 carbon atoms;

[0180] R 5 represents hydrogen or methyl;

[0181] R 6 represents an alkyl chain with 1-4 carbon atoms, optionally substituted by a functional group;

[0182] x, y2 independently represent an integer from 1 to 5...

Embodiment approach 3

[0184] Embodiment 3: The material according to Embodiment 1 or 2, wherein said ligand is represented by Formula (I), and wherein R 1 , R 2 independently of one another represent alkyl, alkenyl, alkynyl, aryl and / or aralkyl chains having 7 to 20 carbon atoms, which chains are optionally substituted by functional groups.

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Abstract

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

Description

technical field [0001] The present invention relates to the field of semiconductors and relates to new quantum dots with improved quantum yield, methods of obtaining them and further uses of said new semiconductors. Background technique [0002] Quantum dots (QDs) are semiconductor particles with diameters in the nanometer range (approximately 2 to 20 nm), which are so small that the optical and electronic properties of the crystals are altered. A special feature of quantum dots is that their color varies with particle size. In order to produce eg blue quantum dots, no other materials are required like red quantum dots, they just have to be produced in a different particle size. In addition to typical applications such as displays, quantum dots are now used in many other fields, such as solar cells or processors. [0003] Quantum dots can fluoresce and convert photons to other wavelengths as well as emit light. However, their outstanding feature is undoubtedly the ability...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/02C09K11/70H01L33/50
CPCC09K11/025C09K11/703H01L33/502C09K11/883A61B90/36C07C333/16C09K11/0883
Inventor S·卡里利K·奥德D·格罗兹曼E·沙维夫
Owner MERCK PATENT GMBH
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