公开(公告)号：US09444008B2

公开(公告)日：2016-09-13

申请号：US14246275

申请日：2014-04-07

Applicant: QD VISION, INC.

Inventor： Dorai Ramprasad ,  Craig Breen ,  Jonathan S. Steckel

IPC: C09K11/08 ,  H01L33/28 ,  B82Y20/00 ,  B82Y30/00 ,  C09K11/02 ,  C09K11/56 ,  C09K11/88 ,  H01L29/225 ,  H01L33/06

CPC classification number: H01L33/06 ,  B82Y20/00 ,  B82Y30/00 ,  C09K11/02 ,  C09K11/565 ,  C09K11/883 ,  H01L29/225 ,  H01L33/0029 ,  H01L33/28 ,  Y10S977/774 ,  Y10S977/95 ,  Y10T428/2991 ,  Y10T428/2993

Abstract: A semiconductor nanocrystal including a core comprising a first semiconductor material comprising at least three chemical elements and a shell disposed over at least a portion of the core, the shell comprising a second semiconductor material, wherein the semiconductor nanocrystal is capable of emitting light with an improved photoluminescence quantum efficiency. Also disclosed are populations of semiconductor nanocrystals, compositions and devices including a semiconductor nanocrystal capable of emitting light with an improved photoluminescence quantum efficiency. In one embodiment, a semiconductor nanocrystal includes a core comprising a first semiconductor material comprising at least three chemical elements and a shell disposed over at least a portion of the core, the shell comprising a second semiconductor material, wherein the semiconductor nanocrystal is capable of emitting light upon excitation with a photoluminescence quantum efficiency greater than about 65%. In another embodiment, a semiconductor nanocrystal includes a core comprising a first semiconductor material comprising zinc, cadmium, and sulfur and a shell disposed over at least a portion of the core, the shell comprising a second semiconductor material. In a further embodiment, a semiconductor nanocrystal includes a core comprises a first semiconductor material comprising at least three chemical elements and a shell disposed over at least a portion of the core, the shell comprising a second semiconductor material comprising at least three chemical elements, wherein the semiconductor nanocrystal is capable of emitting light with a photoluminescence quantum efficiency greater than about 60% upon excitation. In a further embodiment, a semiconductor nanocrystal including a core comprises a first semiconductor material comprising zinc, cadmium, and selenium and a shell disposed over at least a portion of the core, the shell comprising a second semiconductor material, wherein the semiconductor nanocrystal is capable of emitting light with a photoluminescence quantum efficiency greater than about 60% upon excitation.

公开(公告)号：US20150287877A1

公开(公告)日：2015-10-08

申请号：US14644766

申请日：2015-03-11

Applicant: QD VISION, INC.

Inventor： Dorai Ramprasad

IPC: H01L33/06 ,  H01L33/28 ,  H01L33/00 ,  C09K11/56

CPC classification number: H01L33/06 ,  C09K11/565 ,  H01L33/0029 ,  H01L33/28

Abstract: A semiconductor nanocrystal capable of emitting light with an improved photoluminescence quantum efficiency. The present invention further relates to compositions and devices including semiconductor nanocrystals capable of emitting light with an improved photoluminescence quantum efficiency. A semiconductor nanocrystal wherein the semiconductor nanocrystal is capable of emitting light with a photoluminescence quantum efficiency greater than about 50% upon excitation and including a maximum peak emission with a FWHM less than 20 nm is disclosed. Also disclosed are a device, a population of semiconductor nanocrystals, and a composition including a semiconductor nanocrystal wherein the semiconductor nanocrystal is capable of emitting light with a photoluminescence quantum efficiency greater than about 50% upon excitation and including a maximum peak emission with a FWHM less than 20 nm. A semiconductor nanocrystal that is capable of emitting light upon excitation with a photoluminescence quantum efficiency greater than about 90%. Also disclosed are a device, a population, and a composition including a semiconductor nanocrystal.

Abstract translation: 能够发射具有改善的光致发光量子效率的光的半导体纳米晶体。 本发明还涉及包含能够发射具有改善的光致发光量子效率的光的半导体纳米晶体的组合物和器件。 公开了一种半导体纳米晶体，其中半导体纳米晶体能够在激发时发射具有大于约50％的光致发光量子效率并且包括具有小于20nm的FWHM的最大峰值发射的光。 还公开了一种器件，半导体纳米晶体群和包含半导体纳米晶体的组合物，其中半导体纳米晶体在激发时能够发射具有大于约50％的光致发光量子效率的光，并且包括FWHM较小的最大峰值发射 超过20nm。 能够在光致发光量子效率大于约90％的激发下发光的半导体纳米晶体。 还公开了包括半导体纳米晶体的器件，群体和组合物。

公开(公告)号：US08691114B2

公开(公告)日：2014-04-08

申请号：US13768714

申请日：2013-02-15

Applicant: QD Vision, Inc.

Inventor： Dorai Ramprasad ,  Craig Breen ,  Jonathan S. Steckel

IPC: C09K11/08

CPC classification number: H01L33/06 ,  B82Y20/00 ,  B82Y30/00 ,  C09K11/02 ,  C09K11/565 ,  C09K11/883 ,  H01L29/225 ,  H01L33/0029 ,  H01L33/28 ,  Y10S977/774 ,  Y10S977/95 ,  Y10T428/2991 ,  Y10T428/2993

Abstract: A composition comprising a semiconductor nanocrystal including a core comprising a first semiconductor material comprising at least three chemical elements and a shell disposed over at least a portion of the core, the shell comprising a second semiconductor material, wherein the semiconductor nanocrystal is capable of emitting light upon excitation with a photoluminescence quantum efficiency greater than about 65%. Also disclosed is a composition comprising a semiconductor nanocrystal including a core comprising a first semiconductor material comprising at least three chemical elements and a shell disposed over at least a portion of the core, the shell comprising a second semiconductor material comprising at least three chemical elements, wherein the semiconductor nanocrystal is capable of emitting light with a photoluminescence quantum efficiency greater than about 60% upon excitation.

Abstract translation: 一种组合物，其包含半导体纳米晶体，所述半导体纳米晶体包括芯，所述芯包括包含至少三个化学元素的第一半导体材料和设置在所述芯的至少一部分上的壳，所述壳包含第二半导体材料，其中所述半导体纳米晶体能够发光 激发后的光致发光量子效率大于约65％。 还公开了包含半导体纳米晶体的组合物，其包括芯，其包含包含至少三个化学元素的第一半导体材料和设置在芯的至少一部分上的壳，壳包含包含至少三个化学元素的第二半导体材料， 其中所述半导体纳米晶体在激发时能够发射具有大于约60％的光致发光量子效率的光。

公开(公告)号：US20130234109A1

公开(公告)日：2013-09-12

申请号：US13849676

申请日：2013-03-25

Applicant: QD VISION, INC.

Inventor： Craig Breen ,  Jonathan S. Steckel ,  Dorai Ramprasad

IPC: H01L33/06

CPC classification number: C09K11/883 ,  B82Y20/00 ,  B82Y30/00 ,  C09K11/02 ,  C09K11/025 ,  C09K11/0811 ,  C09K11/565 ,  C09K11/574 ,  H01L33/06 ,  Y10S428/917 ,  Y10T428/2991 ,  Y10T428/2993

Abstract: A semiconductor nanocrystal capable of emitting blue light upon excitation. Also disclosed are devices, populations of semiconductor nanocrystals, and compositions including a semiconductor nanocrystal capable of emitting blue light upon excitation. In one embodiment, a semiconductor nanocrystal capable of emitting blue light including a maximum peak emission at a wavelength not greater than about 470 nm with a photoluminescence quantum efficiency greater than about 65% upon excitation. In another embodiment, a semiconductor nanocrystal includes a core comprising a first semiconductor material comprising at least three chemical elements and a shell disposed over at least a portion of the core, the shell comprising a second semiconductor material, wherein the semiconductor nanocrystal is capable of emitting blue light with a photoluminescence quantum efficiency greater than about 65% upon excitation. In a further embodiment, a semiconductor nanocrystal includes a core comprising a first semiconductor material comprising at least three chemical elements and a shell disposed over at least a portion of the core, the shell comprising a second semiconductor material comprising at least three chemical elements, wherein the semiconductor nanocrystal is capable of emitting light including a maximum peak emission in the blue region of the spectrum upon excitation.

Abstract translation: 激发后能够发出蓝光的半导体纳米晶体。 还公开了半导体纳米晶体的器件，群体，以及包括在激发时能够发射蓝光的半导体纳米晶体的组合物。 在一个实施方案中，能够发射包括波长不大于约470nm的最大峰值发射的蓝光的半导体纳米晶体，其光致发光量子效率在激发时大于约65％。 在另一个实施例中，半导体纳米晶体包括芯，其包含包含至少三个化学元素的第一半导体材料和设置在芯的至少一部分上的壳，壳包括第二半导体材料，其中半导体纳米晶体能够发射 激发后光致发光量子效率大于约65％的蓝光。 在另一实施例中，半导体纳米晶体包括芯，其包括包含至少三个化学元件的第一半导体材料和设置在芯的至少一部分上的外壳，壳包括包含至少三个化学元素的第二半导体材料，其中 半导体纳米晶体在激发时能够发射包括光谱的蓝色区域中的最大峰值发射的光。

公开(公告)号：US09534172B2

公开(公告)日：2017-01-03

申请号：US14563531

申请日：2014-12-08

Applicant: QD VISION, INC.

Inventor： Craig Breen ,  Jonathan S. Steckel ,  Dorai Ramprasad

IPC: C09K11/88 ,  C09K11/02 ,  C09K11/56 ,  C09K11/57 ,  C09K11/08 ,  B82Y20/00 ,  B82Y30/00 ,  H01L33/06

CPC classification number: C09K11/883 ,  B82Y20/00 ,  B82Y30/00 ,  C09K11/02 ,  C09K11/025 ,  C09K11/0811 ,  C09K11/565 ,  C09K11/574 ,  H01L33/06 ,  Y10S428/917 ,  Y10T428/2991 ,  Y10T428/2993

Abstract: A semiconductor nanocrystal capable of emitting blue light upon excitation. Also disclosed are devices, populations of semiconductor nanocrystals, and compositions including a semiconductor nanocrystal capable of emitting blue light upon excitation. In one embodiment, a semiconductor nanocrystal capable of emitting blue light including a maximum peak emission at a wavelength not greater than about 470 nm with a photoluminescence quantum efficiency greater than about 65% upon excitation. In another embodiment, a semiconductor nanocrystal includes a core comprising a first semiconductor material comprising at least three chemical elements and a shell disposed over at least a portion of the core, the shell comprising a second semiconductor material, wherein the semiconductor nanocrystal is capable of emitting blue light with a photoluminescence quantum efficiency greater than about 65% upon excitation. In a further embodiment, a semiconductor nanocrystal includes a core comprising a first semiconductor material comprising at least three chemical elements and a shell disposed over at least a portion of the core, the shell comprising a second semiconductor material comprising at least three chemical elements, wherein the semiconductor nanocrystal is capable of emitting light including a maximum peak emission in the blue region of the spectrum upon excitation.

Abstract translation: 激发后能够发出蓝光的半导体纳米晶体。 还公开了半导体纳米晶体的器件，群体，以及包括在激发时能够发射蓝光的半导体纳米晶体的组合物。 在一个实施方案中，能够发射包括波长不大于约470nm的最大峰值发射的蓝光的半导体纳米晶体，其光致发光量子效率在激发时大于约65％。 在另一个实施例中，半导体纳米晶体包括芯，其包含包含至少三个化学元素的第一半导体材料和设置在芯的至少一部分上的壳，壳包括第二半导体材料，其中半导体纳米晶体能够发射 激发后光致发光量子效率大于约65％的蓝光。 在另一实施例中，半导体纳米晶体包括芯，其包括包含至少三个化学元件的第一半导体材料和设置在芯的至少一部分上的外壳，壳包括包含至少三个化学元素的第二半导体材料，其中 半导体纳米晶体在激发时能够发射包括光谱的蓝色区域中的最大峰值发射的光。

公开(公告)号：US08906265B2

公开(公告)日：2014-12-09

申请号：US13849676

申请日：2013-03-25

Applicant: QD Vision, Inc.

Inventor： Craig Breen ,  Jonathan S. Steckel ,  Dorai Ramprasad

IPC: C09K11/02 ,  C09K11/54 ,  C09K11/56 ,  C09K11/88 ,  B82Y30/00 ,  H01L33/06 ,  B82Y20/00

CPC classification number: C09K11/883 ,  B82Y20/00 ,  B82Y30/00 ,  C09K11/02 ,  C09K11/025 ,  C09K11/0811 ,  C09K11/565 ,  C09K11/574 ,  H01L33/06 ,  Y10S428/917 ,  Y10T428/2991 ,  Y10T428/2993

Abstract: A semiconductor nanocrystal capable of emitting blue light upon excitation. Also disclosed are devices, populations of semiconductor nanocrystals, and compositions including a semiconductor nanocrystal capable of emitting blue light upon excitation. In one embodiment, a semiconductor nanocrystal capable of emitting blue light including a maximum peak emission at a wavelength not greater than about 470 nm with a photoluminescence quantum efficiency greater than about 65% upon excitation. In another embodiment, a semiconductor nanocrystal includes a core comprising a first semiconductor material comprising at least three chemical elements and a shell disposed over at least a portion of the core, the shell comprising a second semiconductor material, wherein the semiconductor nanocrystal is capable of emitting blue light with a photoluminescence quantum efficiency greater than about 65% upon excitation. In a further embodiment, a semiconductor nanocrystal includes a core comprising a first semiconductor material comprising at least three chemical elements and a shell disposed over at least a portion of the core, the shell comprising a second semiconductor material comprising at least three chemical elements, wherein the semiconductor nanocrystal is capable of emitting light including a maximum peak emission in the blue region of the spectrum upon excitation.

Abstract translation: 激发后能够发出蓝光的半导体纳米晶体。 还公开了半导体纳米晶体的器件，群体，以及包括在激发时能够发射蓝光的半导体纳米晶体的组合物。 在一个实施方案中，能够发射包括波长不大于约470nm的最大峰值发射的蓝光的半导体纳米晶体，其光致发光量子效率在激发时大于约65％。 在另一个实施例中，半导体纳米晶体包括芯，其包含包含至少三个化学元素的第一半导体材料和设置在芯的至少一部分上的壳，壳包括第二半导体材料，其中半导体纳米晶体能够发射 激发后光致发光量子效率大于约65％的蓝光。 在另一实施例中，半导体纳米晶体包括芯，其包括包含至少三个化学元件的第一半导体材料和设置在芯的至少一部分上的外壳，壳包括包含至少三个化学元素的第二半导体材料，其中 半导体纳米晶体在激发时能够发射包括光谱的蓝色区域中的最大峰值发射的光。