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公开(公告)号：US20170358757A1
公开(公告)日：2017-12-14
申请号：US15524421
申请日：2015-11-06
发明人： Tae-Woo LEE , Sanghyuk IM , Young-Hoon KIM , Himchan CHO
IPC分类号： H01L51/00 , C01G21/16 , C09K11/66 , C09K11/06 , C07F7/24 , H01L51/42 , H01L51/56 , B82Y40/00 , H01L51/52 , B82Y20/00 , B82Y30/00 , H01L51/44 , H01L51/50
CPC分类号： H01L51/0077 , B82Y20/00 , B82Y30/00 , B82Y40/00 , C01G21/006 , C01G21/16 , C01P2002/34 , C01P2002/60 , C01P2004/64 , C01P2004/80 , C01P2004/84 , C01P2006/40 , C07F7/24 , C09K11/02 , C09K11/025 , C09K11/06 , C09K11/665 , C09K2211/188 , H01L51/0037 , H01L51/004 , H01L51/0072 , H01L51/424 , H01L51/442 , H01L51/5012 , H01L51/5206 , H01L51/5221 , H01L51/56 , H01L2251/301 , H01L2251/308 , H01L2251/558 , Y02E10/549 , Y10S977/774 , Y10S977/788 , Y10S977/814 , Y10S977/892 , Y10S977/896 , Y10S977/948 , Y10S977/95
摘要： Provided are perovskite nanocrystalline particle and an optoelectronic device using the same. The perovskite nanocrystalline particle may include a perovskite nanocrystalline structure while being dispersible in an organic solvent. Accordingly, the perovskite nanocrystalline particle in accordance with the present invention has therein a perovskite nanocrystal having a crystalline structure in which FCC and BCC are combined; forms a lamellar structure in which an organic plane and an inorganic plane are alternately stacked; and can show high color purity since excitons are confined to the inorganic plane. In addition, the perovskite nanocrystalline particle have a particle size greater than or equal to a Bohr diameter beyond a quantum confinement effect, and simultaneously can implement high emission efficiency and emission wavelength which is almost not dependent on particle size. Furthermore, the perovskite nanocrystalline particle in accordance with the present invention, as a nanoparticle which is dispersible in an organic solvent, is applicable in various electronic devices such as light emitting devices, lasers, solar cells, etc.
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2.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
发明人： Taewoo LEE , Sanghyuk IM , Himchan CHO , Younghoon KIM
CPC分类号： H01L51/5012 , C09D127/18 , C09K11/06 , C09K2211/188 , H01B1/125 , H01B1/127 , H01G9/2009 , H01L51/004 , H01L51/0077 , H01L51/5096 , Y02E10/549
摘要： 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：US20190259962A1
公开(公告)日：2019-08-22
申请号：US16398230
申请日：2019-04-29
发明人： Tae-Woo LEE , Sanghyuk IM , Himchan CHO , Young-Hoon KIM
IPC分类号： H01L51/00 , C09K11/06 , C01G21/16 , C09K11/66 , H01L31/0352 , C09K11/02 , C07F7/24 , H01L31/032 , H01L51/50 , H01L31/00
摘要： Provided are: a light-emitting layer for a perovskite light-emitting device; a method for manufacturing the same; and a perovskite light-emitting device using the same. The method of the present invention for manufacturing a light-emitting layer for an organic and inorganic hybrid perovskite light-emitting device comprises a step of forming a first nanoparticle thin film by coating, on a member for coating a light-emitting layer, a solution comprising organic and inorganic perovskite nanoparticles including an organic and inorganic perovskite nanocrystalline structure. Thereby, a nanoparticle light emitter has therein an organic and inorganic hybrid perovskite having a crystalline structure in which FCC and BCC are combined; forms a lamella structure in which an organic plane and an inorganic plane are alternatively stacked; and can show high color purity since excitons are confined to the inorganic plane. In addition, it is possible to improve the luminescence efficiency and luminance of a device by making perovskite as nanoparticles and then introducing the same into a light-emitting layer.
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公开(公告)号：US20170369772A1
公开(公告)日：2017-12-28
申请号：US15524476
申请日：2015-11-06
发明人： Tae-Woo LEE , Sanghyuk IM , Young-Hoon KIM , Himchan CHO
CPC分类号： C09K11/06 , C09K11/025 , C09K2211/188 , H01G9/2004 , H01L51/0003 , H01L51/0077 , H01L51/4253 , H01L51/5012 , H01L51/5032
摘要： Provided are a method for manufacturing a perovskite nanocrystal particle light-emitter where an organic ligand is substituted, a light-emitter manufactured thereby, and a light emitting device using the same. A method for manufacturing an organic-inorganic-hybrid perovskite nanocrystal particle light-emitter where an organic ligand is substituted may comprise the steps of: preparing a solution including an organic-inorganic-hybrid perovskite nanocrystal particle light-emitter, wherein the organic-inorganic-hybrid perovskite nanocrystal particle light-emitter comprises an organic-inorganic-hybrid perovskite nanocrystal structure and a plurality of first organic ligands surrounding the organic-inorganic-hybrid perovskite nanocrystal structure; and adding, to the solution, a second organic ligand which is shorter than the first organic ligands or includes a phenyl group or a fluorine group, thereby substitutes the first organic ligands with the second organic ligand. Thus, since energy transfer or charge injection into the nanocrystal structure increases through ligand substitution, it is possible to further increase light emitting efficiency and increase durability and stability by means of a hydrophobic ligand.
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公开(公告)号：US20170358759A1
公开(公告)日：2017-12-14
申请号：US15524489
申请日：2015-11-06
发明人： Tae-Woo LEE , Sanghyuk IM , Himchan CHO , Young-Hoon KIM
IPC分类号： H01L51/00 , C01G21/16 , C09K11/66 , C07F7/24 , C09K11/06 , B82Y40/00 , B82Y30/00 , H01L51/52 , H01L51/50 , H01L51/42 , B82Y20/00 , H01L51/44
CPC分类号： H01L51/0077 , B82Y20/00 , B82Y30/00 , B82Y40/00 , C01G21/16 , C01P2002/34 , C01P2002/60 , C01P2004/64 , C01P2006/40 , C07F7/24 , C09K11/025 , C09K11/06 , C09K11/665 , C09K2211/10 , C09K2211/188 , H01L31/00 , H01L31/032 , H01L31/0352 , H01L51/0003 , H01L51/0034 , H01L51/0037 , H01L51/004 , H01L51/0059 , H01L51/0072 , H01L51/426 , H01L51/4273 , H01L51/442 , H01L51/502 , H01L51/5096 , H01L51/5206 , H01L2251/308 , Y10S977/774 , Y10S977/788 , Y10S977/813 , Y10S977/892 , Y10S977/896 , Y10S977/948 , Y10S977/95
摘要： Provided are: a light-emitting layer for a perovskite light-emitting device; a method for manufacturing the same; and a perovskite light-emitting device using the same. The method of the present invention for manufacturing a light-emitting layer for an organic and inorganic hybrid perovskite light-emitting device comprises a step of forming a first nanoparticle thin film by coating, on a member for coating a light-emitting layer, a solution comprising organic and inorganic perovskite nanoparticles including an organic and inorganic perovskite nanocrystalline structure. Thereby, a nanoparticle light emitter has therein an organic and inorganic hybrid perovskite having a crystalline structure in which FCC and BCC are combined; forms a lamella structure in which an organic plane and an inorganic plane are alternatively stacked; and can show high color purity since excitons are confined to the inorganic plane. In addition, it is possible to improve the luminescence efficiency and luminance of a device by making perovskite as nanoparticles and then introducing the same into a light-emitting layer.
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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
发明人： Tae-woo LEE , Younghoon KIM , Himchan CHO
摘要： 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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7.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
发明人： Tae-Woo LEE , Sanghyuk IM , Himchan CHO , Younghoon KIM
CPC分类号： H01L51/5012 , C09D127/18 , C09K11/06 , C09K2211/188 , H01B1/125 , H01B1/127 , H01G9/2009 , H01L51/004 , H01L51/005 , H01L51/0077 , H01L51/5096 , Y02E10/549
摘要： 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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公开(公告)号：US20170358758A1
公开(公告)日：2017-12-14
申请号：US15524429
申请日：2015-11-06
发明人： Tae-Woo LEE , Sanghyuk IM , Young-Hoon KIM , Himchan CHO
CPC分类号： H01L51/0077 , B82Y20/00 , B82Y30/00 , B82Y40/00 , C07F7/24 , C09K11/06 , C09K11/664 , C09K2211/10 , C09K2211/188 , H01L33/50 , H01L51/0003 , H01L51/0021 , H01L51/5012 , H05B33/14 , Y10S977/788 , Y10S977/896 , Y10S977/95
摘要： Provided are an organic-inorganic-hybrid perovskite nanocrystal particle light-emitter having a two-dimensional structure, a method for producing the same, and a light emitting device using the same. The organic-inorganic-hybrid perovskite nanocrystal particle light-emitter having a two-dimensional structure comprises an organic-inorganic-hybrid perovskite nanocrystal structure having a two-dimensional structure which can be dispersed in an organic solvent. Accordingly, the nanocrystal particle light-emitter comprises an organic-inorganic-hybrid perovskite nanocrystal having a crystal structure combining FCC and BCC; forms a lamellar structure where organic planes and inorganic planes are accumulated in an alternating manner; and can exhibit high color purity by confining excitons in the inorganic planes. In addition, since the exciton diffusion distance decreases and exciton binding energy increases, it is possible to prevent exciton annihilation caused by thermal ionization and delocalization of charge carriers, such that the nanocrystal particle light-emitter can have high luminescence efficiency at room temperature.
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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
发明人： Tae-woo LEE , Younghoon KIM , Himchan CHO
摘要： 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
发明人： Taewoo LEE , Sanghyuk IM , Younghoon KIM , Himchan CHO
IPC分类号： H01L51/00 , C09K11/02 , C09K11/06 , H01L51/50 , H01G9/20 , H01L51/42 , C09K11/66 , B82Y20/00 , B82Y40/00
CPC分类号： 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
摘要： 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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