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公开(公告)号：US12065604B2
公开(公告)日：2024-08-20
申请号：US17502645
申请日：2021-10-15
发明人： Soo Kyung Kwon , Yong Wook Kim , Ji-Yeong Kim , Seon-Yeong Kim , Sungwoo Hwang
IPC分类号： C09K11/02 , C09K11/88 , G02F1/13357 , H01L51/50 , H10K50/115 , B82Y20/00 , B82Y40/00
CPC分类号： C09K11/883 , C09K11/02 , G02F1/133617 , H10K50/115 , B82Y20/00 , B82Y40/00
摘要： A quantum dot composite that includes a matrix; and
a plurality of quantum dots and titanium oxide particles dispersed in the matrix, wherein the quantum dots include zinc, tellurium, and selenium, the quantum dots do not comprise cadmium, lead, mercury, or a combination thereof, and in the quantum dot composite, a weight ratio of tellurium with respect to titanium is greater than or equal to about 1.5:1 and less than or equal to about 10:1.-
公开(公告)号：US11718789B2
公开(公告)日：2023-08-08
申请号：US17503436
申请日：2021-10-18
发明人： Seon-Yeong Kim , Yong Wook Kim , Soo Kyung Kwon , Ji-Yeong Kim , Sungwoo Hwang
IPC分类号： C09K11/88 , C01B19/04 , C01G9/00 , C09K11/70 , H10K50/115 , C09K11/74 , B82Y20/00 , B82Y40/00 , H10K102/00
CPC分类号： C09K11/883 , C01B19/04 , C01G9/006 , C09K11/70 , C09K11/703 , C09K11/7414 , H10K50/115 , B82Y20/00 , B82Y40/00 , C01P2004/64 , C01P2006/60 , H10K2102/00
摘要： A cadmium free quantum dot or a population thereof or a device including the same, wherein the cadmium free quantum dot includes a core (or a semiconductor nanocrystal particle) including a first semiconductor including a Group IIB-VI compound and a shell (or a coating) disposed on the core (or the semiconductor nanocrystal particle) including a Group IIB-V compound and exhibits a quantum efficiency of about 60% or higher.
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公开(公告)号：US11572504B2
公开(公告)日：2023-02-07
申请号：US16851509
申请日：2020-04-17
发明人： Ji-Yeong Kim , Soo Kyung Kwon , Seon-Yeong Kim , Yong Wook Kim , Eun Joo Jang
摘要： 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.
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公开(公告)号：US11905447B2
公开(公告)日：2024-02-20
申请号：US17502667
申请日：2021-10-15
发明人： Sungwoo Hwang , Yong Wook Kim , Soo Kyung Kwon , Seon-Yeong Kim , Ji-Yeong Kim
IPC分类号： C09K11/88 , C09K11/56 , C09K11/02 , H10K50/115 , C01G9/00 , B82Y40/00 , B82Y30/00 , B82Y20/00
CPC分类号： C09K11/883 , C01G9/006 , C09K11/565 , C09K11/567 , B82Y20/00 , B82Y30/00 , B82Y40/00 , C01P2004/64 , C01P2004/84 , C01P2006/60
摘要： 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.
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公开(公告)号：US11702593B2
公开(公告)日：2023-07-18
申请号：US17186434
申请日：2021-02-26
发明人： Jihyun Min , Soo Kyung Kwon , Seon-Yeong Kim , Yong Wook Kim , Ji-Yeong Kim , Eun Joo Jang , Sungwoo Hwang
IPC分类号： C09K11/88 , C09K11/02 , H10K50/115 , H10K59/38 , B82Y40/00 , F21V8/00 , G02F1/1335 , B82Y20/00
CPC分类号： C09K11/883 , C09K11/02 , H10K50/115 , H10K59/38 , B82Y20/00 , B82Y40/00 , G02B6/005 , G02F1/133614 , G02F2202/36
摘要： 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.
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公开(公告)号：US11639466B2
公开(公告)日：2023-05-02
申请号：US16851520
申请日：2020-04-17
发明人： Yong Wook Kim , Eun Joo Jang , Hyo Sook Jang , Soo Kyung Kwon , Seon-Yeong Kim , Ji-Yeong Kim
IPC分类号： C09K11/88 , C09K11/02 , F21V8/00 , G02F1/13357 , H01L27/32 , C09K11/08 , C09K11/56 , B82Y20/00 , B82Y40/00
摘要： 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%.
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7.发明授权公开(公告)号：US11999887B2
公开(公告)日：2024-06-04
申请号：US18182428
申请日：2023-03-13
发明人： Jihyun Min , Sungwoo Hwang , Yong Wook Kim , Ji-Yeong Kim , Soo Kyung Kwon , Seon-Yeong Kim
IPC分类号： C09K11/88 , B82Y20/00 , B82Y40/00 , C01B19/00 , C01G9/08 , C09K11/56 , F21V8/00 , H10K50/115 , H10K59/12 , H10K59/38
CPC分类号： C09K11/883 , C01B19/00 , C01G9/08 , C09K11/565 , H10K50/115 , H10K59/12 , H10K59/38 , B82Y20/00 , B82Y40/00 , C01P2002/74 , C01P2006/60 , G02B6/005
摘要： A core shell quantum dot including a core including a first semiconductor nanocrystal and including zinc, tellurium, and selenium and a semiconductor nanocrystal shell disposed on the core and including a zinc chalcogenide, a method of manufacture thereof, and a device including the same are disclosed, wherein the core shell quantum dot does not include cadmium, lead, mercury, or a combination thereof, wherein in an X-ray photoelectron spectrum of the quantum dot, a peak area for Te oxide to a peak area for Te3d5/2 as an area percentage is less than or equal to about 25%.
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8.发明授权公开(公告)号：US11987739B2
公开(公告)日：2024-05-21
申请号：US18318053
申请日：2023-05-16
发明人： Seon-Yeong Kim , Soo Kyung Kwon , Yong Wook Kim , Ji-Yeong Kim , Jihyun Min , Sungwoo Hwang , Eun Joo Jang
IPC分类号： C09K11/88 , C01G9/00 , C01G9/08 , C09K11/06 , C09K11/54 , C09K11/56 , G02F1/13357 , H10K59/38 , F21V8/00 , G02F1/1335
CPC分类号： C09K11/883 , C01G9/006 , C01G9/08 , C09K11/06 , C09K11/54 , C09K11/565 , G02F1/133621 , H10K59/38 , C01P2004/64 , C01P2004/90 , C01P2006/60 , G02B6/005 , G02F1/133614 , G02F2202/36
摘要： 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%.
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公开(公告)号：US11739263B2
公开(公告)日：2023-08-29
申请号：US16851520
申请日：2020-04-17
发明人： Yong Wook Kim , Eun Joo Jang , Hyo Sook Jang , Soo Kyung Kwon , Seon-Yeong Kim , Ji-Yeong Kim
IPC分类号： C09K11/88 , C09K11/02 , F21V8/00 , G02F1/13357 , H01L27/32 , C09K11/08 , C09K11/56 , B82Y20/00 , B82Y40/00
CPC分类号： C09K11/883 , C09K11/025 , C09K11/0805 , C09K11/562 , C09K11/88 , G02B6/005 , G02F1/133617 , H01L27/322 , H01L27/3244 , B82Y20/00 , B82Y40/00
摘要： 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%.
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10.发明授权公开(公告)号：US11236270B2
公开(公告)日：2022-02-01
申请号：US16507406
申请日：2019-07-10
发明人： Garam Park , Tae Gon Kim , Jooyeon Ahn , Ji-Yeong Kim , Nayoun Won , Shin Ae Jun
IPC分类号： C09K11/88 , C09K11/02 , G02F1/13357 , H01L27/32
摘要： Disclosed are a quantum dot and a quantum dot-polymer composite and a device including the same, wherein the quantum dot includes a semiconductor nanocrystal core including indium (In) and phosphorous (P), 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, wherein the quantum dot does not include cadmium, wherein in the quantum dot, a mole ratio of sulfur with respect to selenium is less than or equal to about 2.5:1.
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