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公开(公告)号：US12166159B2
公开(公告)日：2024-12-10
申请号：US17757103
申请日：2020-12-04
Applicant: SHOEI CHEMICAL INC.
Inventor： Naoki Umeda , Makoto Kido , Yuko Mitsuka , Hirokazu Sasaki
Abstract: A semiconductor nanoparticle aggregate that is an aggregate of core/shell type semiconductor nanoparticles including a core including In and P and a shell having one or more layers, in which a peak wavelength of an emission spectrum of the semiconductor nanoparticle aggregate is from 605 nm to 655 nm and a full width at half maximum of the emission spectrum is 43 nm or less. For each semiconductor nanoparticle, (1) an average value of a full width at half maximum of an emission spectrum is 28 nm or less, (2) a standard deviation of a peak wavelength of the emission spectrum is 10 nm or more and 30 nm or less, and (3) a standard deviation of the full width at half maximum of the emission spectrum is 12 nm or less.
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公开(公告)号：US20220259492A1
公开(公告)日：2022-08-18
申请号：US17618768
申请日：2020-05-26
Applicant: SHOEI CHEMICAL INC.
Inventor： Makoto KIDO , Takafumi Moriyama , Hirokazu Sasaki
Abstract: Provided is a semiconductor nanoparticle complex in which a ligand is coordinated to a surface of a semiconductor nanoparticle. The semiconductor nanoparticle is a core-shell type semiconductor nanoparticle including a core containing In and P and one or more layers of shells. The semiconductor nanoparticle further includes halogen and the molar ratio of halogen to In is 0.80 to 15.00 in terms of atoms. The ligand includes one or more kinds of mercapto fatty acid esters represented by the following general formula: HS—R1—COO—R2. The mercapto fatty acid ester has an SP value of 9.20 or more. The mercapto fatty acid ester has a molecular weight of 700 or less, and the average SP value of the entire ligand is 9.10 to 11.00. The present invention provides a semiconductor nanoparticle complex dispersible at a high mass fraction in a polar dispersion medium while keeping high fluorescence quantum yield.
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公开(公告)号：US20200083406A1
公开(公告)日：2020-03-12
申请号：US16562341
申请日：2019-09-05
Applicant: SHOEI CHEMICAL INC.
Inventor： Takafumi Moriyama , Hirokazu Sasaki , Makoto Kido , Keisuke Matsuura , Yuko Mitsuka , Naoki Sakura
IPC: H01L33/50 , G02F1/1335 , H01L33/06
Abstract: The purpose of the present invention to provide a wavelength conversion layer containing semiconductor nanoparticles substantially containing no Cd, and which have an increased absorption coefficient to blue light while maintaining high stability. A wavelength conversion layer containing semiconductor nanoparticles, wherein the wavelength conversion layer can convert light having a wavelength of 450 nm to light having a peak wavelength of 500 nm to 550 nm, or light having a peak wavelength of 600 nm to 660 nm; each of the semiconductor nanoparticles contained in the wavelength conversion layer has a core and a shell having one or more layers; the core contains In and P; and at least one layer of the shell is ZnXTe (wherein X represents Se or S, or both Se and S).
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公开(公告)号：US11505742B2
公开(公告)日：2022-11-22
申请号：US16562296
申请日：2019-09-05
Applicant: SHOEI CHEMICAL INC.
Inventor： Takafumi Moriyama , Hirokazu Sasaki , Makoto Kido , Keisuke Matsuura , Yuko Mitsuka , Naoki Sakura
Abstract: The purpose of the present invention to provide semiconductor nanoparticles substantially containing no Cd, and which have an increased absorption coefficient to blue light while maintaining high stability. Semiconductor nanoparticles having a core containing at least In and P, and a shell having one or more layers, wherein at least one layer of the shell is ZnSeTe (wherein Te/(Se+Te)=0.03 to 0.50); and the semiconductor nanoparticles cause, when the semiconductor nanoparticles are dispersed in a dispersion medium to yield a dispersion liquid with a concentration of 1 mg/mL in inorganic mass, the dispersion liquid to have an absorbance of 0.9 or higher with respect to light having a wavelength of 450 nm at an optical path length of 1 cm.
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公开(公告)号：US11145792B2
公开(公告)日：2021-10-12
申请号：US16562341
申请日：2019-09-05
Applicant: SHOEI CHEMICAL INC.
Inventor： Takafumi Moriyama , Hirokazu Sasaki , Makoto Kido , Keisuke Matsuura , Yuko Mitsuka , Naoki Sakura
IPC: H01L33/06 , H01L33/50 , G02F1/1335
Abstract: The purpose of the present invention to provide a wavelength conversion layer containing semiconductor nanoparticles substantially containing no Cd, and which have an increased absorption coefficient to blue light while maintaining high stability. A wavelength conversion layer containing semiconductor nanoparticles, wherein the wavelength conversion layer can convert light having a wavelength of 450 nm to light having a peak wavelength of 500 nm to 550 nm, or light having a peak wavelength of 600 nm to 660 nm; each of the semiconductor nanoparticles contained in the wavelength conversion layer has a core and a shell having one or more layers; the core contains In and P; and at least one layer of the shell is ZnXTe (wherein X represents Se or S, or both Se and S).
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Patent Agency Ranking
公开(公告)号：US20220308274A1
公开(公告)日：2022-09-29
申请号：US17596483
申请日：2020-06-03
Applicant: SHOEI CHEMICAL INC.
Inventor： Makoto KIDO , Hirokazu Sasaki
Abstract: Provided is a semiconductor nanoparticle complex in which two or more kinds of ligands including a ligand I and a ligand II are coordinated to a surface of a semiconductor nanoparticle. The ligands are each an organic ligand including an organic group and a coordinating group. The ligand I is a thiocarboxylic acid represented by the following general formula (1). The mole fraction of the ligand I in the ligands is 0.2 mol % to 35.0 mol %. General formula (1): HS—X—(COOH)n (1) (In general formula (1), X is a (n+1)-valent hydrocarbon group, and n is a natural number of 1 to 3.) The present disclosure provides a semiconductor nanoparticle complex dispersible at a high mass fraction in a dispersion medium having polarity while a high fluorescence quantum yield (QY) of the semiconductor nanoparticle is retained.
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公开(公告)号：US20220235264A1
公开(公告)日：2022-07-28
申请号：US17596489
申请日：2020-06-05
Applicant: SHOEI CHEMICAL INC.
Inventor： Makoto KIDO , Takafumi Moriyama , Hirokazu Sasaki
Abstract: Provided is a semiconductor nanoparticle complex in which a ligand is coordinated to a surface of a semiconductor nanoparticle. The semiconductor nanoparticle includes In and P, the ligand includes a mercapto fatty acid ester represented by the following general formula, and the mercapto fatty acid ester has an SP value of 9.30 or less.
General formula: HS—R1—COOR2 (where R1 is a C1-11 hydrocarbon group and R2 is a C1-30 hydrocarbon group). The present invention can provide a semiconductor nanoparticle complex that keeps high fluorescence quantum yield before and after purification.-
公开(公告)号：US12163075B2
公开(公告)日：2024-12-10
申请号：US17595924
申请日：2020-05-29
Applicant: SHOEI CHEMICAL INC.
Inventor： Makoto Kido , Takafumi Moriyama , Hirokazu Sasaki , Yuko Mitsuka
Abstract: A semiconductor nanoparticle complex in which two or more ligands including an aliphatic ligand and a polar ligand are coordinated to a surface of a semiconductor nanoparticle, wherein: the ligands are composed of an organic group and a coordinating group; in the aliphatic ligand, the organic group is an aliphatic hydrocarbon group; the polar ligand includes a hydrophilic functional group in the organic group; a mass ratio of the aliphatic ligand to the polar ligand (aliphatic ligand/polar ligand) is 0.05 to 1.00; a ratio ({(XH)/L}×100) of a mass reduction rate of the semiconductor nanoparticle complex in a range of 350° C. or higher and 550° C. or lower in a thermogravimetric analysis (XH) to a mass fraction of all ligands in the semiconductor nanoparticle complex at room temperature (L) is 10 or more and 55 or less.
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公开(公告)号：US20240352311A1
公开(公告)日：2024-10-24
申请号：US18763347
申请日：2024-07-03
Applicant: SHOEI CHEMICAL INC.
Inventor： Makoto KIDO , Takafumi Moriyama , Hirokazu Sasaki
CPC classification number: C09K11/06 , C08G65/32 , C09K11/565 , C09K11/70 , C09K11/883 , H01B1/06 , B82Y20/00 , H01L33/502
Abstract: Provided is a semiconductor nanoparticle complex in which a ligand is coordinated to a surface of a semiconductor nanoparticle. The semiconductor nanoparticle is a core-shell type semiconductor nanoparticle including a core containing In and P and one or more layers of shells, wherein at least one of the shells is formed of ZnSe. The ligand includes one or more kinds of mercapto fatty acid esters represented by the following general formula (1): HS—R1—COO—R2 (1). The mercapto fatty acid ester has an SP value of 9.20 or more. The mercapto fatty acid ester has a molecular weight of 700 or less, and the average SP value of the entire ligand is 9.10 to 11.00. The present invention provides a semiconductor nanoparticle complex dispersible at a high mass fraction in a polar dispersion medium while keeping high fluorescence quantum yield (QY) of semiconductor nanoparticles.
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公开(公告)号：US12054657B2
公开(公告)日：2024-08-06
申请号：US17618768
申请日：2020-05-26
Applicant: SHOEI CHEMICAL INC.
Inventor： Makoto Kido , Takafumi Moriyama , Hirokazu Sasaki
CPC classification number: C09K11/06 , C08G65/32 , C09K11/565 , C09K11/70 , C09K11/883 , H01B1/06 , B82Y20/00 , H01L33/502
Abstract: Provided is a semiconductor nanoparticle complex in which a ligand is coordinated to a surface of a semiconductor nanoparticle. The semiconductor nanoparticle is a core-shell type semiconductor nanoparticle including a core containing In and P and one or more layers of shells. The semiconductor nanoparticle further includes halogen and the molar ratio of halogen to In is 0.80 to 15.00 in terms of atoms. The ligand includes one or more kinds of mercapto fatty acid esters represented by the following general formula: HS—R1—COO—R2. The mercapto fatty acid ester has an SP value of 9.20 or more. The mercapto fatty acid ester has a molecular weight of 700 or less, and the average SP value of the entire ligand is 9.10 to 11.00. The present invention provides a semiconductor nanoparticle complex dispersible at a high mass fraction in a polar dispersion medium while keeping high fluorescence quantum yield.
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