公开(公告)号：US11505742B2

公开(公告)日：2022-11-22

申请号：US16562296

申请日：2019-09-05

申请人： SHOEI CHEMICAL INC.

发明人： Takafumi Moriyama ,  Hirokazu Sasaki ,  Makoto Kido ,  Keisuke Matsuura ,  Yuko Mitsuka ,  Naoki Sakura

IPC分类号： B32B5/16 ,  C09K11/56 ,  C09K11/88 ,  C09K11/08 ,  B82Y40/00 ,  B82Y20/00

摘要： 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.

公开(公告)号：US20200083406A1

公开(公告)日：2020-03-12

申请号：US16562341

申请日：2019-09-05

申请人： SHOEI CHEMICAL INC.

发明人： Takafumi Moriyama ,  Hirokazu Sasaki ,  Makoto Kido ,  Keisuke Matsuura ,  Yuko Mitsuka ,  Naoki Sakura

IPC分类号： H01L33/50 ,  G02F1/1335 ,  H01L33/06

摘要： 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).

公开(公告)号：US11145792B2

公开(公告)日：2021-10-12

申请号：US16562341

申请日：2019-09-05

申请人： SHOEI CHEMICAL INC.

发明人： Takafumi Moriyama ,  Hirokazu Sasaki ,  Makoto Kido ,  Keisuke Matsuura ,  Yuko Mitsuka ,  Naoki Sakura

IPC分类号： H01L33/06 ,  H01L33/50 ,  G02F1/1335

摘要： 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).

公开(公告)号：US12054657B2

公开(公告)日：2024-08-06

申请号：US17618768

申请日：2020-05-26

申请人： SHOEI CHEMICAL INC.

发明人： Makoto Kido ,  Takafumi Moriyama ,  Hirokazu Sasaki

IPC分类号： C09K11/06 ,  C08G65/32 ,  C09K11/56 ,  C09K11/70 ,  C09K11/88 ,  H01B1/06 ,  B82Y20/00 ,  H01L33/50

CPC分类号： C09K11/06 ,  C08G65/32 ,  C09K11/565 ,  C09K11/70 ,  C09K11/883 ,  H01B1/06 ,  B82Y20/00 ,  H01L33/502

摘要： 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.

公开(公告)号：US20200079997A1

公开(公告)日：2020-03-12

申请号：US16562296

申请日：2019-09-05

申请人： SHOEI CHEMICAL INC.

发明人： Takafumi Moriyama ,  Hirokazu Sasaki ,  Makoto Kido ,  Keisuke Matsuura ,  Yuko Mitsuka ,  Naoki Sakura

IPC分类号： C09K11/88 ,  C09K11/08

摘要： 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.