公开(公告)号：US20210348055A1

公开(公告)日：2021-11-11

申请号：US17243741

申请日：2021-04-29

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Soo Kyung KWON ,  Yong Wook KIM ,  Seon-Yeong KIM ,  Ji-Yeong KIM ,  Jihyun MIN ,  Eun Joo JANG ,  Seonmyeong CHOI ,  Sungwoo HWANG

IPC: C09K11/56 ,  C09K11/88 ,  H01L51/00

Abstract: A quantum dot including a core including a first semiconductor nanocrystal including zinc, selenium, and tellurium, and a semiconductor nanocrystal shell disposed on the core, the semiconductor nanocrystal shell including zinc, and selenium, sulfur, or a combination thereof, wherein the quantum dot does not include cadmium, a mole ratio of tellurium relative to selenium in the first semiconductor nanocrystal is greater than about 1:1, a mole ratio of a sum of selenium and sulfur relative to in the quantum dot is greater than about 1:1, a wavelength of a maximum emission peak of the quantum dot is in a range of about 500 nanometers (nm) to about 550 nm, and the quantum dot has quantum efficiency (QY) of greater than or equal to about 30%, a quantum dot-polymer composite including the quantum dot, a display device including the quantum dot-polymer composite, and an electroluminescent device including the quantum dot.

公开(公告)号：US20210269715A1

公开(公告)日：2021-09-02

申请号：US17186434

申请日：2021-02-26

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jihyun MIN ,  Soo Kyung KWON ,  Seon-Yeong KIM ,  Yong Wook KIM ,  Ji-Yeong KIM ,  Eun Joo JANG ,  Sungwoo HWANG

IPC: C09K11/88 ,  C09K11/02 ,  H01L27/32 ,  H01L51/50

Abstract: A quantum dot including a core and a shell disposed on an outer surface of the core. The core includes a first semiconductor nanocrystal including a Group II-VI compound. The shell includes a second semiconductor nanocrystal. An effective mass of the second semiconductor nanocrystal is about 0.5 times to about 2.0 times an effective mass of the first semiconductor nanocrystal and the quantum dot does not include cadmium, lead, mercury, or a combination thereof.

公开(公告)号：US20200024512A1

公开(公告)日：2020-01-23

申请号：US16519188

申请日：2019-07-23

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jihyun MIN ,  Seon-Yeong KIM ,  Eun Joo JANG ,  Hyo Sook JANG ,  Soo Kyung KWON ,  Yong Wook KIM

IPC: C09K11/70 ,  C09K11/62 ,  C09K11/88 ,  H01L29/12

Abstract: A quantum dot including a semiconductor nanocrystal core and a semiconductor nanocrystal shell disposed on the core and does not include cadmium, wherein the core includes a Group III-V compound, the quantum dot has a maximum photoluminescence peak in a green light wavelength region, a full width at half maximum (FWHM) of the maximum photoluminescence peak is less than about 50 nanometers (nm), and a difference between a wavelength of the maximum photoluminescence peak and a first absorption peak wavelength of the quantum dot is less than or equal to about 25 nanometers, and a production method thereof.

公开(公告)号：US20250051640A1

公开(公告)日：2025-02-13

申请号：US18797872

申请日：2024-08-08

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Soo Kyung KWON ,  Seungrim YANG ,  A Ra JO ,  Seon-Yeong KIM ,  Nayoun WON ,  Jun Ho LEE ,  Mi Hye LIM

IPC: C09K11/62 ,  B82Y20/00 ,  B82Y40/00 ,  C09K11/02 ,  G02F1/13357 ,  H10K59/38

Abstract: A semiconductor nanoparticle, a method of manufacturing the semiconductor nanoparticle, and an electronic device including the nanoparticle are provided. The semiconductor nanoparticle includes silver, indium, gallium, and sulfur, wherein the semiconductor nanoparticle is configured to emit a green light, wherein the semiconductor nanoparticle has a relative mole value of zinc as defined by Equation 1 that is greater than or equal to about 0.25 and less than or equal to about 0.9: Relative ⁢ mole ⁢ value ⁢ of ⁢ zinc = [ Zn ] / ( [ Ag ] + [ In ] + [ Ga ] + [ Zn ] ) Equation ⁢ 1 wherein, in Equation 1, [Ag], [In], [Ga], and [Zn] are molar amounts of the silver, the indium, the gallium, and the zinc in the semiconductor nanoparticle, respectively, and wherein a mole ratio of gallium to indium is greater than about 2.5:1 and less than about 5.6:1.

公开(公告)号：US20240218248A1

公开(公告)日：2024-07-04

申请号：US18409958

申请日：2024-01-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sungwoo HWANG ,  Yong Wook KIM ,  Soo Kyung KWON ,  Seon-Yeong KIM ,  Ji-Yeong KIM

IPC: C09K11/88 ,  C01G9/00 ,  C09K11/56 ,  B82Y20/00 ,  B82Y30/00 ,  B82Y40/00

CPC classification number: C09K11/883 ,  C01G9/006 ,  C09K11/565 ,  C09K11/567 ,  B82Y20/00 ,  B82Y30/00 ,  B82Y40/00 ,  C01P2004/64 ,  C01P2004/84 ,  C01P2006/60

Abstract: A cadmium free quantum dot including a core that includes a first semiconductor nanocrystal including zinc, tellurium, and selenium, and a semiconductor nanocrystal shell that is disposed on the core and includes a zinc chalcogenide, wherein the quantum dot further includes magnesium and the mole ratio of Te:Se is greater than or equal to about 0.1:1 in the quantum dot; a production method thereof; and an electronic device including the same.

公开(公告)号：US20230287269A1

公开(公告)日：2023-09-14

申请号：US18318053

申请日：2023-05-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seon-Yeong KIM ,  Soo Kyung KWON ,  Yong Wook KIM ,  Ji-Yeong KIM ,  Jihyun MIN ,  Sungwoo HWANG ,  Eun Joo JANG

IPC: C09K11/88 ,  C09K11/54 ,  C09K11/56 ,  C09K11/06 ,  C01G9/00 ,  C01G9/08 ,  G02F1/13357 ,  H10K59/38

CPC classification number: C09K11/883 ,  C09K11/54 ,  C09K11/565 ,  C09K11/06 ,  C01G9/006 ,  C01G9/08 ,  G02F1/133621 ,  H10K59/38 ,  G02F2202/36 ,  C01P2006/60 ,  C01P2004/90 ,  C01P2004/64 ,  G02B6/005

Abstract: A core-shell quantum dot including a core including a first semiconductor nanocrystal, the first semiconductor nanocrystal including zinc, tellurium, and selenium and a semiconductor nanocrystal shell disposed on the core, the semiconductor nanocrystal shell including zinc and selenium, sulfur, or a combination thereof and a production thereof are disclosed, wherein the core-shell quantum dot does not include cadmium, lead, mercury, or a combination thereof, wherein the core-shell quantum dot(s) includes chlorine, wherein in the core-shell quantum dot, a mole ratio of chlorine with respect to tellurium is greater than or equal to about 0.01:1 and wherein a quantum efficiency of the core-shell quantum dot is greater than or equal to about 10%.

公开(公告)号：US20230183567A1

公开(公告)日：2023-06-15

申请号：US18105911

申请日：2023-02-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ji-Yeong KIM ,  Soo Kyung KWON ,  Seon-Yeong KIM ,  Yong Wook KIM ,  Eun Joo JANG

IPC: C09K11/54 ,  C09K11/02 ,  C09K11/57 ,  C09K11/58 ,  C09K11/64 ,  C09K11/88

CPC classification number: C09K11/54 ,  C09K11/02 ,  C09K11/57 ,  C09K11/58 ,  C09K11/64 ,  C09K11/88 ,  B82Y20/00

Abstract: A core-shell quantum dot comprising zinc, a core comprising a first semiconductor nanocrystal material; and a semiconductor nanocrystal shell disposed on the core, wherein the core-shell quantum dot does not comprise cadmium, and does comprise zinc, tellurium, selenium, and aluminum.

公开(公告)号：US20200332191A1

公开(公告)日：2020-10-22

申请号：US16851539

申请日：2020-04-17

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Soo Kyung KWON ,  Seon-Yeong KIM ,  Yong Wook KIM ,  Ji-Yeong KIM ,  Eun Joo JANG

IPC: C09K11/88 ,  C09K11/02 ,  H01L27/32 ,  F21V8/00

Abstract: A quantum dot comprising zinc, tellurium, and selenium and not comprising cadmium, wherein a maximum luminescent peak of the quantum dot is present in a wavelength range of greater than about 470 nanometers (nm) and a quantum efficiency of the quantum dot is greater than or equal to about 10%, and wherein the quantum dot comprises a core comprising a first semiconductor nanocrystal and a semiconductor nanocrystal shell disposed on the core.

公开(公告)号：US20200332190A1

公开(公告)日：2020-10-22

申请号：US16851520

申请日：2020-04-17

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yong Wook KIM ,  Eun Joo JANG ,  Hyo Sook JANG ,  Soo Kyung KWON ,  Seon-Yeong KIM ,  Ji-Yeong KIM

IPC: C09K11/88 ,  F21V8/00 ,  G02F1/13357 ,  H01L27/32 ,  C09K11/02

Abstract: A cadmium free quantum dot includes zinc, tellurium, and selenium, and lithium. A full width at half maximum of a maximum luminescent peak of the cadmium free quantum dot is less than or equal to about 50 nanometers and the cadmium free quantum dot has a quantum efficiency of greater than 1%.

公开(公告)号：US20230250336A1

公开(公告)日：2023-08-10

申请号：US18297033

申请日：2023-04-07

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yong Wook KIM ,  Eun Joo JANG ,  Hyo Sook JANG ,  Soo Kyung KWON ,  Seon-Yeong KIM ,  Ji-Yeong KIM

IPC: C09K11/88 ,  C09K11/02 ,  F21V8/00 ,  G02F1/13357 ,  C09K11/08 ,  C09K11/56 ,  H10K59/12 ,  H10K59/38

CPC classification number: C09K11/883 ,  C09K11/025 ,  G02B6/005 ,  G02F1/133617 ,  C09K11/88 ,  C09K11/0805 ,  C09K11/562 ,  H10K59/12 ,  H10K59/38 ,  B82Y20/00

Abstract: A cadmium free quantum dot includes zinc, tellurium, and selenium, and lithium. A full width at half maximum of a maximum luminescent peak of the cadmium free quantum dot is less than or equal to about 50 nanometers and the cadmium free quantum dot has a quantum efficiency of greater than 1%.