公开(公告)号：US20220204843A1

公开(公告)日：2022-06-30

申请号：US17546882

申请日：2021-12-09

Applicant: Samsung Display Co., Ltd.

Inventor： Junehyuk Jung ,  Seungwon Park ,  Junghoon Song ,  Baekhee Lee ,  Junwoo Lee ,  Jaebok Chang

IPC: C09K11/88 ,  C09K11/08

Abstract: A quantum dot, a method of preparing the quantum dot, and an optical member and an electronic device, each including the quantum dot, are provided. The quantum dot includes: a core including a Group III-V semiconductor compound alloyed with gallium (Ga); a first shell surrounding the core; and a second shell surrounding the first shell, wherein the first shell includes a first compound that includes a Group II-VI semiconductor compound, a Group III-V semiconductor compound, or a Group III-VI semiconductor compound, the second shell includes a second compound that includes a Group II-VI semiconductor compound, a Group III-V semiconductor compound, or a Group III-VI semiconductor compound, the first compound and the second compound are different from each other, and the atomic percentages of specific elements in a material of the core, elemental ratios in the first shell and second shell with respect to the core satisfy certain ranges.

公开(公告)号：US11725142B2

公开(公告)日：2023-08-15

申请号：US17546882

申请日：2021-12-09

Applicant: Samsung Display Co., Ltd.

Inventor： Junehyuk Jung ,  Seungwon Park ,  Junghoon Song ,  Baekhee Lee ,  Junwoo Lee ,  Jaebok Chang

IPC: C09K11/88 ,  C09K11/08 ,  C09K11/75 ,  C09K11/74 ,  B82Y40/00 ,  B82Y20/00

CPC classification number: C09K11/883 ,  C09K11/0883 ,  C09K11/7492 ,  C09K11/75 ,  B82Y20/00 ,  B82Y40/00

Abstract: A quantum dot, a method of preparing the quantum dot, and an optical member and an electronic device, each including the quantum dot, are provided. The quantum dot includes: a core including a Group III-V semiconductor compound alloyed with gallium (Ga); a first shell surrounding the core; and a second shell surrounding the first shell, wherein the first shell includes a first compound that includes a Group II-VI semiconductor compound, a Group III-V semiconductor compound, or a Group III-VI semiconductor compound, the second shell includes a second compound that includes a Group II-VI semiconductor compound, a Group III-V semiconductor compound, or a Group III-VI semiconductor compound, the first compound and the second compound are different from each other, and the atomic percentages of specific elements in a material of the core, elemental ratios in the first shell and second shell with respect to the core satisfy certain ranges.

公开(公告)号：US12226748B2

公开(公告)日：2025-02-18

申请号：US17236985

申请日：2021-04-21

Applicant: Samsung Display Co., Ltd.

Inventor： Donghee Lee ,  Chul Soon Park ,  Junghoon Song

IPC: B01J19/12 ,  B01F33/452 ,  B01F35/95 ,  B01J19/00 ,  H01F7/02 ,  H05K9/00 ,  B01F35/90 ,  B01F101/00 ,  B82Y30/00 ,  B82Y40/00

Abstract: A stirrer includes a magnetic bar and a microwave absorbing layer around the magnetic bar. The stirrer absorbs a microwave and converts the microwave to thermal energy to heat the mixed solution reactant.