公开(公告)号：US20230242816A1

公开(公告)日：2023-08-03

申请号：US18103384

申请日：2023-01-30

申请人： Samsung Display Co., Ltd.

发明人： Yunku Jung ,  Yunhyuk Ko ,  Chulsoon Park ,  Yohan Suh ,  Sooho Lee ,  Changyeol Han

IPC分类号： C09K11/88 ,  C09K11/08

CPC分类号： C09K11/883 ,  C09K11/0883 ,  B82Y20/00

摘要： A quantum dot, a method of preparing the same, and an electronic apparatus including the same. The quantum dot includes: a core; and a shell around at least portion of the core. The core may include a first semiconductor compound including indium (In) and phosphorus (P), and in the first semiconductor compound, a ratio between the number of moles (mol) of In and the number of moles (mol) of P (MIn/MP) may be greater than 1.

公开(公告)号：US20230320117A1

公开(公告)日：2023-10-05

申请号：US18155965

申请日：2023-01-18

申请人： Samsung Display Co., Ltd.

发明人： Yunku Jung ,  Yunhyuk Ko ,  Changyeol Han

IPC分类号： H10K50/115 ,  C09K11/88

CPC分类号： H10K50/115 ,  C09K11/883 ,  H10K50/16

摘要： A light-emitting device including: a first electrode; a second electrode facing the first electrode; and an interlayer located between the first electrode and the second electrode, wherein the interlayer includes an emission layer, and wherein the emission layer includes a first quantum dot and a second quantum dot, wherein an energy band gap of the first quantum dot is greater than an energy band gap of the second quantum dot, and wherein the first quantum dot emits light of a partial wavelength region of a visible light region.

公开(公告)号：US20230227722A1

公开(公告)日：2023-07-20

申请号：US18155972

申请日：2023-01-18

申请人： Samsung Display Co., Ltd.

发明人： Yunku Jung ,  Yunhyuk Ko ,  Yohan Suh ,  Changyeol Han

IPC分类号： C09K11/88 ,  C09K11/08 ,  C09K11/02 ,  H10K50/115

CPC分类号： C09K11/883 ,  C09K11/0883 ,  C09K11/025 ,  H10K50/115 ,  B82Y20/00

摘要： A quantum dot composition, including a first quantum dot and a second quantum dot, wherein a valence band maximum energy level of the first quantum dot is different from a valence band maximum energy level of the second quantum dot, as determined by ambient photoelectron spectroscopy, and an energy band gap of the first quantum dot is identical to an energy band gap of the second quantum dot, as determined by ultraviolet-visible spectroscopy.

公开(公告)号：US20230323203A1

公开(公告)日：2023-10-12

申请号：US18132896

申请日：2023-04-10

申请人： Samsung Display Co., Ltd.

发明人： Changyeol Han ,  Yunhyuk KO ,  Yunku Jung

IPC分类号： C09K11/88 ,  H01L33/50

CPC分类号： C09K11/883 ,  H01L33/502 ,  B82Y20/00

摘要： A method of preparing a quantum dot, an optical member including the quantum dot prepared using the method, and an electronic device including the quantum dot are provided. The method includes forming a first particle including a core and a protective shell from a quantum dot composition including a precursor containing a tellurium (Te) element, a precursor containing a Group II element, and a precursor containing a Group VI element; purifying the first particle; and forming a second particle including a first shell by mixing the first particle with a first shell composition including the precursor containing a Group II element and the precursor containing a Group VI element and forming the first shell from the protective shell.

公开(公告)号：US20230180504A1

公开(公告)日：2023-06-08

申请号：US18070310

申请日：2022-11-28

申请人： Samsung Display Co., Ltd.

发明人： Yunhyuk Ko ,  Changhee Lee ,  Yunku Jung ,  Changyeol Han

IPC分类号： H10K50/16 ,  H10K50/115 ,  H10K59/123

CPC分类号： H01L51/5072 ,  H01L51/502 ,  H01L27/3248

摘要： A light-emitting device and an electronic apparatus including the light-emitting device. The light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an interlayer between the first electrode and the second electrode, wherein the interlayer may include an emission layer and an electron transport layer, the electron transport layer may be between the emission layer and the second electrode, the electron transport layer may include an electron transporting particle, the electron transporting particle may include a core, a first shell covering the core, and a second shell covering the first shell, the first shell may include a first compound, the second shell may include a second compound, the core may include a third compound, and the first compound and the second compound may each independently include an oxide, a chalcogenide, or any combination thereof.