Perovskite nanocrystalline particles and optoelectronic device using same
US-2017358757-A1 · Dec 14, 2017 · US
Shelling of halide perovskite nanoparticles for the prevention of anion exchange
US10796901B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10796901-B2 |
| Application number | US-201715714519-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 25, 2017 |
| Priority date | Sep 29, 2016 |
| Publication date | Oct 6, 2020 |
| Grant date | Oct 6, 2020 |
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.
A core/shell semiconductor nanoparticle structure comprises a core comprising a halide perovskite semiconductor and a shell comprising a semiconductor material that is not a halide perovskite (and that is substantially free of halide perovskites). The halide perovskite semiconductor core may be of the form AMX3, wherein: A is an organic ammonium such as CH3NH3+, (C8H17)2(CH3NH3)+, PhC2H4NH3+, C6H11CH2NH3+ or 1-adamantyl methyl ammonium, an amidinium such as CH(NH2)2+, or an alkali metal cation such as Li+, Na+, K+, Rb+ or Cs+; M is a divalent metal cation such as Mg2+, Mn2+, Ni2+, Co2+, Pb2+, Sn2+, Zn2+, Ge2+, Eu2+, Cu2+ or Cd2+; and X is a halide anion (F−, Cl−, Br−, I−) or a combination of halide anions.
First claim
Opening claim text (preview).
What is claimed is: 1. A photoluminescent core/shell semiconductor nanoparticle comprising: a core comprising a halide perovskite semiconductor of the form ABX 3 ; and a shell substantially surrounding the core and comprising BaTiO 3 , SrTiO 3 , BiFeO 3 , LaNiO 3 , CaTiO 3 , PbTiO 3 or LaYbO 3 , wherein the shell is substantially free of halide perovskites, A is selected from the group consisting of Li + , Na + , K + , Rb + and Cs + , M is a divalent metal cation selected from the group consisting of Mg 2+ , Mn 2+ , Pb 2+ , Sn 2+ and Zn 2+ , and X is selected from the group consisting of F − , Cl − , Br − and I − . 2. A composition comprising: a population of core/shell semiconductor nanoparticles according to claim 1 ; and a matrix. 3. The composition of claim 2 , wherein the matrix comprises a resin. 4. A solution comprising: a population of core/shell semiconductor nanoparticles according to claim 1 ; and a solvent. 5. A light-emitting device comprising the photoluminescent core/shell nanoparticle of claim 1 .
Assignees
Inventors
Classifications
the material having a perovskite structure, e.g. BaTiO3 · CPC title
Organic perovskites; Hybrid organic-inorganic perovskites [HOIP], e.g. CH3NH3PbI3 · CPC title
Wavelength conversion materials · CPC title
- C09K11/06Primary
containing organic luminescent materials · CPC title
within the light-emitting regions · 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 US10796901B2 cover?
- A core/shell semiconductor nanoparticle structure comprises a core comprising a halide perovskite semiconductor and a shell comprising a semiconductor material that is not a halide perovskite (and that is substantially free of halide perovskites). The halide perovskite semiconductor core may be of the form AMX3, wherein: A is an organic ammonium such as CH3NH3+, (C8H17)2(CH3NH3)+, PhC2H4NH3+, C…
- Who is the assignee on this patent?
- Nanoco Technologies Ltd
- What technology area does this patent fall under?
- Primary CPC classification C09K11/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 06 2020 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).