Semiconductor nanoparticles, production method thereof, and light-emitting device
US-2021083146-A1 · Mar 18, 2021 · US
Bright silver based quaternary nanostructures
US12570899B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12570899-B2 |
| Application number | US-202418620774-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 28, 2024 |
| Priority date | Jun 20, 2019 |
| Publication date | Mar 10, 2026 |
| Grant date | Mar 10, 2026 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
Disclosed are nanostructures comprising Ag, In, Ga, and S and a shell comprising Ag, Ga and S, wherein the nanostructures have a peak wavelength emission of 480-545 nm and wherein at least about 80% of the emission is band-edge emission. Also disclosed are methods of making the nanostructures.
First claim
Opening claim text (preview).
What is claimed is: 1 . A method of making nanostructures, the method comprising: (a) reacting Ga (acetylacetonate) 3, InCl3, and a ligand at a temperature sufficient to give an In—Ga reagent; (b) reacting the In—Ga reagent with Ag2S nanostructures at a temperature sufficient to make AIGS nanostructures; (c) reacting the AIGS nanostructures with an oxygen-free Ga salt in a solvent containing a ligand at a temperature sufficient to form AIGS/AGS core-shell nanostructures. 2 . The method of claim 1 , wherein the nanostructures comprise Ag, In, Ga, and S (AIGS) and a shell comprising Ag, Ga and S (AGS), wherein the nanostructures have a peak emission wavelength (PWL) in a range of 480 to 545 nanometers, wherein at least 80% of the emission is band-edge emission, and wherein the nanostructures exhibit a quantum yield (QY) of 80 to 99.9%. 3 . The method of claim 1 , wherein the ligand is an alkylamine. 4 . The method of claim 3 , wherein the alkylamine is oleylamine. 5 . The method of claim 1 , wherein the solvent is octadecene, squalane, dibenzylether or xylene. 6 . The method of claim 1 , wherein the temperature sufficient in (a) is 100 to 280° C.; the temperature sufficient in (b) is 150 to 260° C.; and the temperature sufficient in (c) is 170 to 280° C. 7 . The method of claim 1 , wherein the oxygen-free Ga salt is GaX3, wherein the X is selected from at least one of the group of F, Cl, or Br.
Assignees
Inventors
Classifications
Nanostructured additives · CPC title
Additives being defined by their diameter · CPC title
Ingredients treated with inorganic substances · CPC title
Manufacture of films or sheets · CPC title
Ceramic · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US12570899B2 cover?
- Disclosed are nanostructures comprising Ag, In, Ga, and S and a shell comprising Ag, Ga and S, wherein the nanostructures have a peak wavelength emission of 480-545 nm and wherein at least about 80% of the emission is band-edge emission. Also disclosed are methods of making the nanostructures.
- Who is the assignee on this patent?
- Shoei Chemical Ind Co
- What technology area does this patent fall under?
- Primary CPC classification C09K11/02. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 10 2026 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).