公开(公告)号：US12232347B2

公开(公告)日：2025-02-18

申请号：US18404975

申请日：2024-01-05

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Nayoun Won ,  Mi Hye Lim ,  Tae Gon Kim ,  Taekhoon Kim ,  Shang Hyeun Park ,  Shin Ae Jun

IPC: H10K50/115 ,  C09K11/02 ,  C09K11/56 ,  C09K11/70 ,  C09K11/88

Abstract: A cadmium-free, core shell quantum dot, a quantum dot polymer composite, and electronic devices including the quantum dot polymer composite. The core shell quantum dot has an extinction coefficient per gram of greater than or equal to 0.3, an ultraviolet-visible absorption spectrum curve that has a positive differential coefficient value at 450 nm, wherein the core shell quantum dot includes a semiconductor nanocrystal core including indium and phosphorus, and optionally zinc, and a semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core, the shell including zinc, selenium, and sulfur, wherein the core shell quantum dot has a quantum efficiency of greater than or equal to about 80%, and is configured to emit green light upon excitation.

公开(公告)号：US11753588B2

公开(公告)日：2023-09-12

申请号：US17092368

申请日：2020-11-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Taekhoon Kim ,  Nayoun Won ,  Tae Gon Kim ,  Mi Hye Lim ,  Shin Ae Jun ,  Shang Hyeun Park

IPC: C09K11/88 ,  C09K11/02 ,  H10K50/115 ,  B82Y15/00 ,  B82Y40/00 ,  C01B25/08

CPC classification number: C09K11/883 ,  C09K11/02 ,  H10K50/115 ,  B82Y15/00 ,  B82Y40/00 ,  C01B25/087

Abstract: A quantum dot-polymer composite including a polymer matrix; and core-shell quantum dots dispersed in the polymer matrix, wherein the core-shell quantum dots include a semiconductor nanocrystal core including indium, zinc, and phosphorus and a semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core, the shell including zinc, selenium, and sulfur. The core-shell quantum dots do not include cadmium, the core-shell quantum dots are configured to emit green light, the core-shell quantum dots have a mole ratio of phosphorus to indium of greater than or equal to about 0.75, and the core-shell quantum dots have a mole ratio of zinc to indium of greater than or equal to about 35, and a method of producing the core-shell quantum dots, and a display device including a light emitting element that includes the quantum dot-polymer composite.

公开(公告)号：US11011672B2

公开(公告)日：2021-05-18

申请号：US16786004

申请日：2020-02-10

Applicant: Samsung Electronics Co., Ltd.

Inventor： Garam Park ,  Tae Hyung Kim ,  Eun Joo Jang ,  Hyo Sook Jang ,  Shin Ae Jun ,  Yongwook Kim ,  Taekhoon Kim ,  Jihyun Min ,  Yuho Won

IPC: H01L33/04 ,  C09K11/02 ,  C09K11/61 ,  C09K11/70 ,  C09K11/88 ,  H01L33/24 ,  H01L33/28 ,  H01L33/30 ,  H01L33/32 ,  H01L33/34

Abstract: A quantum dot includes a core-shell structure including a core including a first semiconductor nanocrystal and a shell disposed on the core, and including a material at least two different halogens, and the quantum dot does not include cadmium.

公开(公告)号：US10074770B2

公开(公告)日：2018-09-11

申请号：US15386512

申请日：2016-12-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Garam Park ,  Tae Hyung Kim ,  Eun Joo Jang ,  Hyo Sook Jang ,  Shin Ae Jun ,  Yongwook Kim ,  Taekhoon Kim ,  Jihyun Min ,  Yuho Won

IPC: H01L29/06 ,  H01L33/04 ,  H01L33/24 ,  H01L33/28 ,  H01L33/30 ,  H01L33/32 ,  H01L33/34 ,  C09K11/02 ,  C09K11/61 ,  C09K11/70 ,  C09K11/88

CPC classification number: H01L33/04 ,  C09K11/025 ,  C09K11/615 ,  C09K11/70 ,  C09K11/883 ,  H01L33/24 ,  H01L33/28 ,  H01L33/30 ,  H01L33/32 ,  H01L33/34

Abstract: A quantum dot includes a core-shell structure including a core including a first semiconductor nanocrystal and a shell disposed on the core, and including a material at least two different halogens, and the quantum dot does not include cadmium.

公开(公告)号：US11981848B2

公开(公告)日：2024-05-14

申请号：US17238538

申请日：2021-04-23

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sung Jun Park ,  Junghwa Kim ,  Tae Gon Kim ,  Taekhoon Kim ,  Young Mo Sung ,  Nayoun Won ,  Dongjin Yun ,  Mi Hye Lim ,  Shin Ae Jun ,  Hyeonsu Heo

IPC: C09K11/56 ,  B82Y20/00 ,  B82Y30/00 ,  B82Y40/00 ,  H10K50/115

CPC classification number: C09K11/565 ,  B82Y20/00 ,  B82Y30/00 ,  B82Y40/00 ,  H10K50/115

Abstract: A quantum dot including a semiconductor nanocrystal core including Group III-V compound, a first semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core, the first semiconductor nanocrystal shell including zinc and selenium, and a second semiconductor nanocrystal shell disposed on the first semiconductor nanocrystal shell, the second semiconductor nanocrystal shell including zinc and sulfur, and a composite/electronic device. The quantum dot does not include cadmium and the first semiconductor nanocrystal shell includes a polyvalent metal dopant at an interface with the second semiconductor nanocrystal shell.

公开(公告)号：US11795392B2

公开(公告)日：2023-10-24

申请号：US17234845

申请日：2021-04-20

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hyeyeon Yang ,  Jooyeon Ahn ,  Taekhoon Kim ,  Shang Hyeun Park ,  Nayoun Won ,  Mi Hye Lim ,  Shin Ae Jun

IPC: C09K11/88 ,  C09K11/08 ,  C09K11/02 ,  F21V8/00 ,  H10K50/115 ,  H10K59/38 ,  B82Y40/00 ,  B82Y20/00

CPC classification number: C09K11/883 ,  C09K11/025 ,  C09K11/0883 ,  G02B6/005 ,  H10K50/115 ,  H10K59/38 ,  B82Y20/00 ,  B82Y40/00

Abstract: A cadmium-free quantum dot, a quantum dot-polymer composite including the cadmium-free quantum dot, a display device including the quantum dot-polymer composite, and an electroluminescent device including the cadmium-free quantum dot are disclosed, wherein the cadmium-free quantum dot includes a core including a first semiconductor nanocrystal including indium and phosphorus; a light emitting layer surrounding the core and including a second semiconductor nanocrystal including indium and phosphorus; a first shell disposed between the core and the light emitting layer and including a semiconductor nanocrystal including zinc, and selenium, sulfur, or a combination thereof; and a second shell disposed on the light emitting layer and including a semiconductor nanocrystal including zinc, and selenium, sulfur, or a combination thereof, and wherein the quantum is a single light emitting quantum dot having an emission peak wavelength in a range of about 500 nanometers (nm) to about 550 nm.

公开(公告)号：US11661547B2

公开(公告)日：2023-05-30

申请号：US16883989

申请日：2020-05-26

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  Samsung SDI Co., Ltd. ,  Samsung Display Co., Ltd.

Inventor： Shin Ae Jun ,  Taekhoon Kim ,  Garam Park ,  Yong Seok Han ,  Eun Joo Jang ,  Hyo Sook Jang ,  Tae Won Jeong ,  Shang Hyeun Park

IPC: C09K11/62 ,  C09K11/70 ,  C09K11/08 ,  C09K11/88 ,  C09K11/56 ,  C09K11/02 ,  C08K3/32 ,  C08K3/30 ,  G02F1/1335 ,  G02F1/13357 ,  B82Y40/00 ,  B82Y20/00 ,  B82Y30/00

CPC classification number: C09K11/025 ,  C08K3/30 ,  C08K3/32 ,  C09K11/703 ,  C09K11/883 ,  G02F1/133516 ,  G02F1/133617 ,  B82Y20/00 ,  B82Y30/00 ,  B82Y40/00 ,  C08K2201/001 ,  G02F2202/36 ,  Y10S977/774 ,  Y10S977/896 ,  Y10S977/95

Abstract: A quantum dot, including a core including a first semiconductor material that includes indium; and a shell including a second semiconductor material, and disposed on the core, wherein the first semiconductor material and the second semiconductor material are different, wherein the shell has at least two branch portions and a valley portion connecting the at least two branch portions, at least one of the at least two branch portions comprises Zn, Se, and S, and a content of sulfur in the at least one branch portion increases in a direction away from the core.

公开(公告)号：US11512252B2

公开(公告)日：2022-11-29

申请号：US15251643

申请日：2016-08-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Garam Park ,  Eun Joo Jang ,  Yongwook Kim ,  Jihyun Min ,  Hyo Sook Jang ,  Shin Ae Jun ,  Taekhoon Kim ,  Yuho Won

IPC: C09K11/88 ,  C09K11/02 ,  C09K11/70 ,  H01L33/50 ,  B82Y20/00

Abstract: A semiconductor nanocrystal particle including: a core including a first semiconductor material; and a shell disposed on the core, wherein the shell includes a second semiconductor material, wherein the shell is free of cadmium, wherein the shell has at least two branches and at least one valley portion connecting the at least two branches, and wherein the first semiconductor material is different from the second semiconductor material.

公开(公告)号：US12146090B2

公开(公告)日：2024-11-19

申请号：US18223709

申请日：2023-07-19

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Taekhoon Kim ,  Nayoun Won ,  Tae Gon Kim ,  Mi Hye Lim ,  Shin Ae Jun ,  Shang Hyeun Park

IPC: C09K11/88 ,  C09K11/02 ,  H10K50/115 ,  B82Y15/00 ,  B82Y40/00 ,  C01B25/08

Abstract: A quantum dot-polymer composite including a polymer matrix; and core-shell quantum dots dispersed in the polymer matrix, wherein the core-shell quantum dots include a semiconductor nanocrystal core including indium, zinc, and phosphorus and a semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core, the shell including zinc, selenium, and sulfur. The core-shell quantum dots do not include cadmium, the core-shell quantum dots are configured to emit green light, the core-shell quantum dots have a mole ratio of phosphorus to indium of greater than or equal to about 0.75, and the core-shell quantum dots have a mole ratio of zinc to indium of greater than or equal to about 35, and a method of producing the core-shell quantum dots, and a display device including a light emitting element that includes the quantum dot-polymer composite.

公开(公告)号：US11903228B2

公开(公告)日：2024-02-13

申请号：US18194794

申请日：2023-04-03

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Nayoun Won ,  Mi Hye Lim ,  Tae Gon Kim ,  Taekhoon Kim ,  Shang Hyeun Park ,  Shin Ae Jun

IPC: H10K50/115 ,  C09K11/02 ,  C09K11/56 ,  C09K11/70 ,  C09K11/88

CPC classification number: H10K50/115 ,  C09K11/02 ,  C09K11/565 ,  C09K11/703 ,  C09K11/883

Abstract: A cadmium-free, core shell quantum dot, a quantum dot polymer composite, and electronic devices including the quantum dot polymer composite. The core shell quantum dot has an extinction coefficient per gram of greater than or equal to 0.3, an ultraviolet-visible absorption spectrum curve that has a positive differential coefficient value at 450 nm, wherein the core shell quantum dot includes a semiconductor nanocrystal core including indium and phosphorus, and optionally zinc, and a semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core, the shell including zinc, selenium, and sulfur, wherein the core shell quantum dot has a quantum efficiency of greater than or equal to about 80%, and is configured to emit green light upon excitation.