Color stable Mn-activated oxidofluorides as conversion luminescent materials for LED-based solid state light sources

US12018194B2 · kind B2 · utility

Assignees

• Seoul Semiconductor Co., Ltd. · KR
• LITEC-VERMOGENSVERWALTUNGSGESELLSCHAFT MBH · DE

Inventors

• Thomas Paul JANSEN · Kohlenbissen, DE
• Ho Jun BYUN · Ansan-si, KR
• Inbeom Song · Ansan-si, KR
• Bo Han · Ansan-si, KR
• Benjamin Kistner · Greifswald, DE
• Stefan Tews · Greifswald, DE

Key dates

• Filing date: Aug 18, 2022
• Grant date: Jun 25, 2024
• Expiry date: Aug 18, 2042

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10H20/8513
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A compound of the general formula (I): A3BF2M1−xTxO2−2xF4+2x doped with Mn(IV), in which A is selected from the group consisting of Li, Na, K, Rb, Cs, Cu, Ag, Tl, NH4, NR4 and mixtures of two or more thereof, where R is an alkyl or aryl group, B is selected from the group consisting of H and D and mixtures thereof, where D is Deuterium, M is selected from the group consisting of Cr, Mo, W, Te, Re and mixtures of two or more thereof, T is selected from the group consisting of Si, Ge, Sn, Ti, Pb, Ce, Zr, Hf and mixtures of two or more thereof, and 0≤x≤1.