公开(公告)号：US20230295491A1

公开(公告)日：2023-09-21

申请号：US18185810

申请日：2023-03-17

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： A Ra JO ,  Nayoun WON ,  Yebin JUNG ,  Minho KIM ,  Tae-Gon KIM ,  Seungrim YANG ,  Shin Ae JUN

IPC: C09K11/62 ,  C09K11/02 ,  H01L33/50

CPC classification number: C09K11/621 ,  C09K11/02 ,  H01L33/502 ,  B82Y20/00

Abstract: A semiconductor nanoparticle, and a method for producing the semiconductor nanoparticle, and a composite, a color conversion panel, and a display panel including the semiconductor nanoparticle. The semiconductor nanoparticle includes silver, a Group 13 metal including indium and gallium, and a chalcogen element including sulfur and optionally selenium, the semiconductor nanoparticle is configured to emit a green light with an emission peak wavelength of 500 nanometers to 580 nanometers, and a full width at half maximum of about 5 nm to about 70 nm. The semiconductor nanoparticle exhibits a quantum yield of greater than or equal to about 50%, and includes a mole ratio (In+Ga):Ag of about 1:1 to about 3.5:1.

公开(公告)号：US20210355380A1

公开(公告)日：2021-11-18

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

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：US20210324268A1

公开(公告)日：2021-10-21

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 ,  H01L27/32 ,  H01L51/50 ,  F21V8/00

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：US20210126212A1

公开(公告)日：2021-04-29

申请号：US17080069

申请日：2020-10-26

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Nayoun WON ,  Mi Hye LIM ,  Tae Gon KIM ,  Taekhoon KIM ,  Shang Hyeun PARK ,  Shin Ae JUN

IPC: H01L51/50 ,  C09K11/88 ,  C09K11/02 ,  C09K11/70 ,  C09K11/56

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：US20190211262A1

公开(公告)日：2019-07-11

申请号：US16245653

申请日：2019-01-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Young Seok PARK ,  Eun Joo JANG ,  Shin Ae JUN ,  Nayoun WON ,  Jooyeon AHN ,  Sung Woo KIM

IPC: C09K11/70 ,  C09K11/02 ,  F21V8/00 ,  G02F1/1335 ,  H01L27/32

CPC classification number: C09K11/70 ,  C09K11/02 ,  C09K11/025 ,  C09K11/883 ,  G02B6/005 ,  G02F1/133617 ,  H01L27/322 ,  H05B33/14

Abstract: A quantum dot includes a core including a first semiconductor nanocrystal and a multi-layered shell disposed on the core and including at least two layers, a production method thereof, and an electronic device including the same. The quantum dot does not include cadmium; the first semiconductor nanocrystal includes a Group III-V compound, the multi-layered shell includes a first layer surrounding at least a portion of a surface of the core, the first layer including a second semiconductor nanocrystal, the second semiconductor nanocrystal including a Group II-V compound, and a second layer disposed on the first layer, the second layer including a third semiconductor nanocrystal, the third semiconductor nanocrystal comprising a composition different from that of the second semiconductor nanocrystal.

公开(公告)号：US20190211260A1

公开(公告)日：2019-07-11

申请号：US16245544

申请日：2019-01-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yuho WON ,  Nayoun WON ,  Sungwoo HWANG ,  Eun Joo JANG ,  Soo Kyung KWON ,  Yong Wook KIM ,  Jihyun MIN ,  Garam PARK ,  Shang Hyeun PARK ,  Hyo Sook JANG ,  Shin Ae JUN ,  Yong Seok HAN

IPC: C09K11/08 ,  C08L57/10 ,  G02F1/1335 ,  H01L51/50 ,  H01L27/32

CPC classification number: C09K11/0883 ,  B82Y20/00 ,  B82Y40/00 ,  C08L57/10 ,  C08L2203/20 ,  C09K11/025 ,  C09K11/565 ,  C09K11/70 ,  C09K11/883 ,  G02F1/133617 ,  G02F2001/133614 ,  G02F2202/022 ,  G02F2202/102 ,  G02F2202/36 ,  H01L27/322 ,  H01L51/502 ,  H05B33/14

Abstract: A cadmium free quantum dot not including cadmium and including: a semiconductor nanocrystal core comprising indium and phosphorous, a first semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core and comprising zinc and selenium, and a second semiconductor nanocrystal shell disposed on the first semiconductor nanocrystal shell and comprising zinc and sulfur, a composition and composite including the same, and an electronic device.

公开(公告)号：US20180186998A1

公开(公告)日：2018-07-05

申请号：US15862197

申请日：2018-01-04

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

Inventor： Jooyeon AHN ,  Nayoun WON ,  Ha Il KWON ,  Eun Joo JANG ,  Shin Ae JUN

IPC: C08L57/10 ,  C08L53/00 ,  C08K5/5419 ,  C08K5/205 ,  C08K5/09 ,  C09K11/08

Abstract: A composition including: a plurality of quantum dots; a monomer combination including a first monomer having at least two thiol groups at terminal ends of the first monomer and a second monomer having at least two carbon-carbon double bonds at terminal ends of the second monomer; and an additive, a composite prepared therefrom, and an electronic device including same are disclosed. The additive includes a cyclosiloxane compound having a reactive moiety, a (meth)acrylate salt of a polyvalent metal, and a dithiocarbamate salt of a polyvalent metal, or a combination thereof, and wherein the reactive moiety includes a carbon-carbon double bond, a thiol group, or a combination thereof.

公开(公告)号：US20230295492A1

公开(公告)日：2023-09-21

申请号：US18185755

申请日：2023-03-17

Applicant: Samsung Electronics Co., Ltd.

Inventor： Nayoun WON ,  Tae-Gon KIM ,  Minho KIM ,  Seungrim YANG ,  Shin Ae JUN ,  Yebin JUNG ,  A Ra JO

IPC: C09K11/62 ,  C09K11/02 ,  H10K59/38 ,  H01L33/50

CPC classification number: C09K11/623 ,  C09K11/02 ,  H10K59/38 ,  H01L33/502

Abstract: A semiconductor nanoparticle, including silver, a Group 13 metal, and a chalcogen element, wherein the semiconductor nanoparticle emits a first light, the Group 13 metal includes gallium, and optionally further includes indium, aluminum, or a combination thereof, the chalcogen element includes sulfur, and optionally further includes selenium, the first light has a full width at half maximum of greater than or equal to about 5 nanometers (nm) to less than or equal to about 70 nm, the first light has a maximum emission wavelength of greater than or equal to about 500 nm to less than or equal to about 600 nm, the semiconductor nanoparticle has a quantum yield of greater than or equal to about 50%, a mole ratio of gallium to sulfur is greater than or equal to about 0.1:1 to less than or equal to about 1:1, and a charge balance value defined by Equation 1 herein.

公开(公告)号：US20230255043A1

公开(公告)日：2023-08-10

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.

公开(公告)号：US20220298413A1

公开(公告)日：2022-09-22

申请号：US17824225

申请日：2022-05-25

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Tae Gon KIM ,  Shin Ae JUN ,  Taek hoon KIM ,  Hyeyeon YANG ,  Nayoun WON ,  Jongmin Lee ,  Mi Hye LIM

IPC: C09K11/70 ,  C08F220/38 ,  C09K11/02 ,  C09K11/88 ,  H01L33/00 ,  H01L33/50

Abstract: Quantum dots and a composite and a display device including the quantum dots. The quantum dots comprise a semiconductor nanocrystal core comprising indium and phosphorous, and optionally zinc, a semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core, the first semiconductor nanocrystal shell comprising zinc, selenium, and sulfur, wherein the quantum dots are configured to exhibit a maximum photoluminescence peak in a green light wavelength region, and in an ultraviolet-visible (UV-Vis) absorption spectrum of the quantum dots, a ratio A450/Afirst, of an absorption value at 450 nm to an absorption value at a first excitation peak is greater than or equal to about 0.7, and a valley depth (VD) defined by the following equation is greater than or equal to about 0.4: (Absfirst−Absvalley)/Absfirst=VD wherein, Absfirst is an absorption value at the first absorption peak wavelength and Absvalley is an absorption value at a lowest point of the valley adjacent to the first absorption peak, and wherein the maximum photoluminescence peak of the quantum dots has a full width at half maximum of less than or equal to 40 nanometers.