LIGHT EMITTING MATERIAL AND METHOD FOR MANUFACTURING SAME

• Main Authors: OYAMATSU, Daisuke, KUWABATA, Susumu, UEMATSU, Taro, TORIMOTO, Tsukasa, KAMEYAMA, Tatsuya
• Format: Patent
• Language: English
• Published: 25.05.2023
• Subjects: ADHESIVES; BASIC ELECTRIC ELEMENTS; CHEMISTRY; DYES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NANOTECHNOLOGY; NATURAL RESINS; PAINTS; PERFORMING OPERATIONS; POLISHES; SEMICONDUCTOR DEVICES; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; TRANSPORTING

Provided is a luminescent material having excellent durability. The luminescent material contains second semiconductor nanoparticles that contain first semiconductor nanoparticles and a deposit arranged on surfaces of the first semiconductor nanoparticles, and that emit light when irradiated with light; and a metal compound in which the second semiconductor nanoparticles are embedded. The first semiconductor nanoparticles contain M1, M2, and Z. M1 is at least one selected from the group consisting of Ag, Cu, Au and alkali metals, and contains at least Ag. M2 is at least one selected from the group consisting of Al, Ga, In and Tl, and contains at least one of In and Ga. Z contains at least one selected from the group consisting of S, Se, and Te. The deposit is substantially composed of at least one selected from the group consisting of Al, Ga, In, Tl and alkali metals, and at least one selected from the group consisting of S, O, Se, and Te. The metal compound contains at least one of Zn and Ga, and at least one of S and O.