公开(公告)号：US20250101298A1

公开(公告)日：2025-03-27

申请号：US18758011

申请日：2024-06-28

Applicant: Samsung Display Co., Ltd.

Inventor： SUNGJAE KIM ,  Youngsik KIM ,  Hongrae KIM ,  Bitna YOON ,  DONGHEE LEE ,  TAEKJOON LEE ,  JUNEHYUK JUNG

IPC: C09K11/62 ,  C09K11/58 ,  H01L33/50 ,  H10K50/115 ,  H10K50/155

Abstract: Embodiments provide a quantum dot, a method for preparing a quantum dot, and a light emitting element including the quantum dot. The method for preparing a quantum dot includes forming a core including a copper atom, an indium atom, a gallium atom, and a sulfur atom, and forming a shell surrounding the core by reacting the surface of the core with hydrofluoric acid, a Group II element precursor, and a Group VI element precursor.

公开(公告)号：US20250101299A1

公开(公告)日：2025-03-27

申请号：US18889807

申请日：2024-09-19

Applicant: Samsung Display Co., Ltd.

Inventor： Youngsik KIM ,  Sungjae KIM ,  Hongrae KIM ,  Bitna YOON ,  Donghee LEE ,  Taekjoon LEE ,  Junehyuk JUNG

IPC: C09K11/62 ,  B82Y20/00 ,  B82Y40/00 ,  C01G15/00 ,  G02F1/13357

Abstract: A quantum dot includes copper (Cu), a Group III element, and a Group VI element, wherein the quantum dot further includes a halogen component that is an iodide ion, a bromide ion, a chloride ion, a fluoride ion, or a combination thereof. A molar ratio of the halogen component to the copper (Cu) and a molar ratio of the halogen component to the Group III element is each independently in a range of about 0.01 to about 0.5, and a full width at half maximum (FWHM) of a photoluminescence spectrum of the quantum dot is equal to or less than about 80 nm.