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公开(公告)号：US20210151639A1
公开(公告)日：2021-05-20
申请号：US17163329
申请日：2021-01-29
Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATION , SN DISPLAY Co., LTD.
Inventor： Tae-woo LEE , Younghoon KIM , Himchan CHO
Abstract: Provided are a wavelength converting particle, a method for manufacturing a wavelength converting particle, and a light-emitting diode containing a wavelength converting particle. The wavelength converting particle comprises a hybrid OIP nanocrystal that converts a wavelength of light generated by an excitation light source into a specified wavelength. Accordingly, it is possible to optically stabilize and improve color purity and light-emission performance without changes in a light-emitting wavelength range.
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公开(公告)号：US20170346024A1
公开(公告)日：2017-11-30
申请号：US15524735
申请日：2015-11-06
Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATION
Inventor： Taewoo LEE , Sanghyuk IM , Younghoon KIM , Himchan CHO
IPC: H01L51/00 , C09K11/02 , C09K11/06 , H01L51/50 , H01G9/20 , H01L51/42 , C09K11/66 , B82Y20/00 , B82Y40/00
CPC classification number: H01L51/0077 , B01J13/06 , B82Y20/00 , B82Y30/00 , B82Y40/00 , C09K11/025 , C09K11/06 , C09K11/665 , C09K2211/10 , C09K2211/188 , H01G9/2059 , H01L51/0007 , H01L51/0037 , H01L51/4253 , H01L51/426 , H01L51/5012 , H01L51/502 , H01L51/5032 , Y10S977/774 , Y10S977/812 , Y10S977/892 , Y10S977/948 , Y10S977/95
Abstract: Provided are a core-shell structured perovskite nanocrystalline particle light-emitting body, a method of preparing the same, and a light emitting device using the same. The core-shell structured organic-inorganic hybrid perovskite nanocrystalline particle light-emitting body or metal halide perovskite nanocrystalline particle light-emitting body is able to be dispersed in an organic solvent, and has a perovskite nanocrystal structure and a core-shell structured nanocrystalline particle structure. Therefore, in the perovskite nanocrystalline particle light-emitting body of the present invention, as a shell is formed of a substance having a wider band gap than that of a core, excitons may be more dominantly confined in the core, and durability of the nanocrystal may be improved to prevent exposure of the core perovskite to the air using a perovskite or inorganic semiconductor, which is stable in the air, or an organic polymer.
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公开(公告)号：US20170342317A1
公开(公告)日：2017-11-30
申请号：US15524747
申请日：2015-11-06
Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATION
Inventor： Taewoo LEE , Sanghyuk IM , Younghoon KIM , Himchan CHO
CPC classification number: C09K11/06 , C09K11/025 , C09K11/664 , C09K2211/188 , H01G9/2059 , H01L51/0003 , H01L51/0026 , H01L51/0047 , H01L51/005 , H01L51/0077 , H01L51/422 , H01L51/4253 , H01L51/5012 , H01L51/502 , H01L51/5032 , H01L51/56 , H01L2251/5346
Abstract: Provided are an organic-inorganic hybrid perovskite nanocrystal particle light emitting body having a gradient structure, a method of producing the same, and a light emitting element using the same. The organic-inorganic hybrid perovskite nanocrystal particle light emitting body having a gradient structure includes an organic-inorganic hybrid perovskite nanocrystal which is dispersible in an organic solvent, wherein the nanocrystal has a gradient composition in which a composition is changed from the center thereof to the outside. Therefore, the gradual change in the content in the nanocrystal may be used to uniformly adjust a fraction in the nanocrystal, to reduce surface oxidation, and to improve exciton confinement in the perovskite present in large quantities inside the nanocrystal, and thus light emission efficiency may be improved and durability and stability may be increased.
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Patent Agency Ranking
公开(公告)号：US20230197910A1
公开(公告)日：2023-06-22
申请号：US18108572
申请日：2023-02-10
Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATION , SN DISPLAY CO., LTD.
Inventor： Tae-woo LEE , Younghoon KIM , Himchan CHO
CPC classification number: H01L33/504 , C09K11/025 , C09K11/06 , H01L33/502 , H01L33/505 , G02F1/3551 , G02F1/3775 , C09K2211/188 , H01L33/507
Abstract: Provided are a wavelength converting particle, a method for manufacturing a wavelength converting particle, and a light-emitting diode containing a wavelength converting particle. The wavelength converting particle comprises a hybrid OIP nanocrystal that converts a wavelength of light generated by an excitation light source into a specified wavelength. Accordingly, it is possible to optically stabilize and improve color purity and light-emission performance without changes in a light-emitting wavelength range.
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公开(公告)号：US20170331013A1
公开(公告)日：2017-11-16
申请号：US15524761
申请日：2015-11-06
Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATION
Inventor： Taewoo LEE , Younghoon KIM , Himchan CHO
Abstract: Provided are a wavelength converting particle, a method for manufacturing a wavelength converting particle, and a light-emitting diode containing a wavelength converting particle. The wavelength converting particle comprises a hybrid OIP nanocrystal that converts a wavelength of light generated by an excitation light source into a specified wavelength. Accordingly, it is possible to optically stabilize and improve color purity and light-emission performance without changes in a light-emitting wavelength range.
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6.发明申请公开(公告)号：US20170346031A1
公开(公告)日：2017-11-30
申请号：US15524754
申请日：2015-11-06
Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATION
Inventor： Taewoo LEE , Sanghyuk IM , Himchan CHO , Younghoon KIM
CPC classification number: H01L51/5012 , C09D127/18 , C09K11/06 , C09K2211/188 , H01B1/125 , H01B1/127 , H01G9/2009 , H01L51/004 , H01L51/0077 , H01L51/5096 , Y02E10/549
Abstract: Provided are a perovskite light emitting device containing an exciton buffer layer, and a method for manufacturing the same. The light emitting device of the present invention comprises: an exciton buffer layer in which a first electrode, a conductive layer disposed on the first electrode and comprising a conductive material, and a surface buffer layer containing fluorine-based material having lower surface energy than the conductive material are sequentially deposited; a light-emitting layer disposed on the exciton buffer layer and containing an organic-inorganic hybrid perovskite light emitting body; and a second electrode disposed on the light-emitting layer. Accordingly, an organic-inorganic hybrid perovskite is formed with a combined FCC and BSS crystal structure in a nanoparticle light-emitting body; the present invention forms a lamellar structure in which an organic plane and an inorganic plane are alternatively deposited; and an exciton is bound by the inorganic plane, thereby being capable of expressing high color purity.
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公开(公告)号：US20200020834A1
公开(公告)日：2020-01-16
申请号：US16578264
申请日：2019-09-20
Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATION
Inventor： Tae-woo LEE , Younghoon KIM , Himchan CHO
Abstract: Provided are a wavelength converting particle, a method for manufacturing a wavelength converting particle, and a light-emitting diode containing a wavelength converting particle. The wavelength converting particle comprises a hybrid OIP nanocrystal that converts a wavelength of light generated by an excitation light source into a specified wavelength. Accordingly, it is possible to optically stabilize and improve color purity and light-emission performance without changes in a light-emitting wavelength range.
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8.发明申请公开(公告)号：US20190237693A1
公开(公告)日：2019-08-01
申请号：US16382094
申请日：2019-04-11
Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATION
Inventor： Tae-Woo LEE , Sanghyuk IM , Himchan CHO , Younghoon KIM
CPC classification number: H01L51/5012 , C09D127/18 , C09K11/06 , C09K2211/188 , H01B1/125 , H01B1/127 , H01G9/2009 , H01L51/004 , H01L51/005 , H01L51/0077 , H01L51/5096 , Y02E10/549
Abstract: Provided are a perovskite light emitting device containing an exciton buffer layer, and a method for manufacturing the same. The light emitting device of the present invention comprises: an exciton buffer layer in which a first electrode, a conductive layer disposed on the first electrode and comprising a conductive material, and a surface buffer layer containing fluorine-based material having lower surface energy than the conductive material are sequentially deposited; a light-emitting layer disposed on the exciton buffer layer and containing a perovskite light-emitter; and a second electrode disposed on the light-emitting layer. Accordingly, a perovskite is formed with a combined FCC and BSS crystal structure in a nanoparticle light-emitter. The present invention can also form a lamellar or layered structure in which an organic plane and an inorganic plane are alternatively deposited; and an exciton can be bound by the inorganic plane, thereby being capable of expressing high color purity.
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