公开(公告)号：US20160027960A1

公开(公告)日：2016-01-28

申请号：US14732772

申请日：2015-06-07

Applicant: QD VISION, INC.

Inventor： SETH COE-SULLIVAN ,  MARSHALL COX ,  CAROLINE J. ROUSH ,  JONATHAN S. STECKEL

IPC: H01L33/06 ,  H01L51/50 ,  H01L27/15 ,  H01L33/00 ,  H01L33/28

CPC classification number: H01L33/06 ,  B82Y20/00 ,  B82Y30/00 ,  C09K11/02 ,  C09K11/565 ,  C09K11/883 ,  H01L27/156 ,  H01L33/0029 ,  H01L33/28 ,  H01L51/5012 ,  H01L51/502 ,  H05B33/145

Abstract: Light-emitting devices and displays with improved performance are disclosed. A light-emitting device includes an emissive material disposed between a first electrode, and a second electrode. Various embodiments include a device having a peak external quantum efficiency of at least about 2.2%; a device that emits light having a CIE color coordinate of x greater than 0.63; a device having an external quantum efficiency of at least about 2.2 percent when measured at a current density of 5 mA/cm2. Also disclosed is a light-emitting device comprising a plurality of semiconductor nanocrystals capable of emitting red light upon excitation, wherein the device has a peak luminescent efficiency of at least about 1.5 lumens per watt. Also disclosed is a light-emitting device comprising a plurality of semiconductor nanocrystals capable of emitting red light upon excitation, wherein the device has a luminescent efficiency of at least about 1.5 lumens per watt when measured at a current density of 5 milliamps/square centimeter. Also disclosed is a light-emitting device comprising a plurality of semiconductor nanocrystals capable of emitting green light upon excitation, wherein the device has a peak external quantum efficiency of at least about 1.1 percent. Further disclosed is a light-emitting device comprising a plurality of semiconductor nanocrystals, wherein the device has a luminescent efficiency of at least about 3 lumens per watt when measured at a current density of 5 mA/cm2. Further disclosed is a light-emitting device comprising a plurality of semiconductor nanocrystals capable of emitting green light upon excitation, wherein the device has an external quantum efficiency of at least about 2% when measured at a current density of 5 mA/cm2. Other light-emitting devices and displays with improved performance are disclosed. Also disclosed are methods for preparing and for purifying semiconductor nanocrystals.

Abstract translation: 公开了具有改进性能的发光装置和显示器。 发光装置包括设置在第一电极和第二电极之间的发光材料。 各种实施方案包括具有至少约2.2％的峰值外部量子效率的器件; 发射具有x大于0.63的CIE色坐标的光的装置; 当以5mA / cm 2的电流密度测量时，具有至少约2.2％的外部量子效率的器件。 还公开了包括能够在激发时发射红光的多个半导体纳米晶体的发光器件，其中该器件具有至少约1.5流明/瓦特的峰值发光效率。 还公开了一种发光器件，其包括能够在激发时发射红光的多个半导体纳米晶体，其中当以5毫安/平方厘米的电流密度测量时，该器件具有至少约1.5流明/瓦特的发光效率。 还公开了一种发光器件，其包括在激发时能够发射绿光的多个半导体纳米晶体，其中该器件具有至少约1.1％的峰值外部量子效率。 还公开了包括多个半导体纳米晶体的发光器件，其中当以5mA / cm 2的电流密度测量时，该器件具有至少约3流明/瓦的发光效率。 进一步公开的是一种发光器件，其包括能够在激发时发出绿光的多个半导体纳米晶体，其中当以5mA / cm 2的电流密度测量时，该器件具有至少约2％的外部量子效率。 公开了其他具有改进性能的发光装置和显示器。 还公开了制备和纯化半导体纳米晶体的方法。

公开(公告)号：US20170069787A1

公开(公告)日：2017-03-09

申请号：US15256646

申请日：2016-09-05

Applicant: QD VISION, INC.

Inventor： DORAI RAMPRASAD ,  CRAIG BREEN ,  JONATHAN S. STECKEL

IPC: H01L33/06 ,  C09K11/56 ,  C09K11/88 ,  H01L33/28 ,  H01L33/00

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：US20150086169A1

公开(公告)日：2015-03-26

申请号：US14500200

申请日：2014-09-29

Applicant: QD VISION, INC.

Inventor： CRAIG BREEN ,  JOHN R. LINTON ,  JONATHAN S. STECKEL ,  MARSHALL COX ,  SETH COE-SULLIVAN ,  MARK COMERFORD

IPC: C09K11/02 ,  C09K11/06 ,  G02B6/10

CPC classification number: C09K11/025 ,  B82Y20/00 ,  C09K11/883 ,  C30B7/14 ,  C30B29/40 ,  C30B29/48 ,  C30B29/60 ,  G02B6/0023 ,  G02B6/0035 ,  G02B6/005 ,  G02B6/10 ,  Y10S977/774 ,  Y10S977/786 ,  Y10S977/95 ,  Y10T428/24893

Abstract: The present inventions relate to optical components which include quantum confined semiconductor nanoparticles, wherein at least a portion of the nanoparticles include a ligand attached to a surface thereof, the ligand being represented by the formula: X-Sp-Z, wherein: X represents a primary amine group, a secondary amine group, a urea, a thiourea, an imidizole group, an amide group, an other nitrogen containing group, a carboxylic acid group, a phosphonic or arsonic acid group, a phosphinic or arsinic acid group, a phosphate or arsenate group, a phosphine or arsine oxide group; Sp represents a spacer group, such as a group capable of allowing a transfer of charge or an insulating group; and Z represents: (i) a reactive group capable of communicating specific chemical properties to the nanocrystal as well as provide specific chemical reactivity to the surface of the nanocrystal, and/or (ii) a group that is cyclic, halogenated, or polar a-protic. Compositions, systems, kits, films, inks, and TFEL lamps are also disclosed.

Abstract translation: 本发明涉及包括量子限制半导体纳米颗粒的光学组件，其中至少一部分纳米颗粒包括与其表面连接的配体，该配体由下式X-Sp-Z表示，其中：X表示 伯胺基，仲胺基，脲，硫脲，亚氨基咪唑基，酰胺基，其他含氮基，羧酸基，膦酸或仲磺酸基，次膦酸或亚磺酸基，磷酸根 或砷酸盐基团，膦或胂氧化物基团; Sp表示间隔基，例如可以允许电荷转移或绝缘组的基团; 并且Z表示：（i）能够与纳米晶体传递特定化学性质的反应性基团，并且提供对纳米晶体的表面的特定的化学反应性，和/或（ii）环状，卤化的或极性的基团 -protic。 还公开了组合物，系统，试剂盒，薄膜，油墨和TFEL灯。

公开(公告)号：US20170069802A1

公开(公告)日：2017-03-09

申请号：US15159424

申请日：2016-05-19

Applicant: QD VISION, INC.

Inventor： ROBERT J. NICK ,  JONATHAN S. STECKEL

IPC: H01L33/50 ,  H01L33/64

CPC classification number: H01L33/507 ,  H01L33/64

Abstract: A light emitting device including a light emitting element having a light emitting surface and an optical component comprising an optical material comprising quantum dots sealed within an optically transparent structural member, the optical component being coupled to the light emitting element by a thermally conductive member is disclosed. A light emitting device including a light emitting element having a light emitting surface and an optical component comprising an optical material comprising quantum dots sealed within a structural member comprising single crystal sapphire, the optical component being coupled to the light emitting element by a thermally conductive member, is also disclosed.

Abstract translation: 公开了一种发光器件，其包括具有发光表面的发光元件和包括密封在光学透明结构元件内的包括量子点的光学材料的光学部件，所述光学部件通过导热部件耦合到发光元件 。 一种发光器件，包括具有发光表面的发光元件和包括密封在包括单晶蓝宝石的结构元件内的量子点的光学材料的光学部件，所述光学部件通过导热部件耦合到所述发光元件 ，也被披露。

公开(公告)号：US20160068750A1

公开(公告)日：2016-03-10

申请号：US14853388

申请日：2015-09-14

Applicant: QD Vision, Inc.

Inventor： CHRISTOPHER R. CLOUGH ,  CRAIG BREEN ,  JONATHAN S. STECKEL ,  EBENEZER SELWYN ARUN THAMBAN

IPC: C09K11/88 ,  C09K11/02 ,  H01L33/06

CPC classification number: C09K11/883 ,  B82Y30/00 ,  C01B25/085 ,  C01B25/087 ,  C01G28/00 ,  C01G30/00 ,  C01P2004/64 ,  C01P2006/40 ,  C09K11/02 ,  C09K11/025 ,  C09K11/70 ,  H01L33/06 ,  Y10T428/2991

Abstract: A nanocrystal comprising a semiconductor material comprising one or more elements of Group IIIA of the Periodic Table of Elements and one or more elements of Group VA of the Periodic Table of Elements, wherein the nanocrystal is capable of emitting light having a photoluminescence quantum efficiency of at least about 30% upon excitation. Also disclosed is a nanocrystal including a core comprising a first semiconductor material comprising one or more elements of Group IIIA of the Periodic Table of Elements and one or more elements of Group VA of the Periodic Table of Elements, and a shell disposed over at least a portion of the core, the shell comprising a second semiconductor material, wherein the nanocrystal is capable of emitting light having a photoluminescence quantum efficiency of at least about 30% upon excitation. Also disclosed is a nanocrystal comprising a nanocrystal core and a shell comprising a semiconductor material disposed on at least a portion of the nanocrystal core, wherein the semiconductor material comprises at least three chemical elements and is obtainable by a process comprising adding a precursor for at least one of the chemical elements of the semiconductor material from a separate source to a nanocrystal core while simultaneously adding amounts of precursors for the other chemical elements of the semiconductor material. A population of nanocrystals, method for preparing nanocrystals, compositions, and devices including nanocrystals are also disclosed.

Abstract translation: 包括半导体材料的纳米晶体，所述半导体材料包含元素周期表的IIIA族元素的一种或多种元素和元素周期表的第VA族元素的一种或多种元素，其中所述纳米晶体能够发射具有光致发光量子效率的光 激发时至少约30％。 还公开了纳米晶体，其包括芯，其包含包含元素周期表的IIIA族的一种或多种元素的第一半导体材料和元素周期表的VA族的一种或多种元素，以及至少一种 芯的部分，壳包括第二半导体材料，其中纳米晶体在激发时能够发射具有至少约30％的光致发光量子效率的光。 还公开了一种纳米晶体，其包含纳米晶核和包含设置在纳米晶核的至少一部分上的半导体材料的外壳，其中所述半导体材料包含至少三种化学元素，并且可通过以下方法获得： 半导体材料的一种化学元素从单独的源到纳米晶核，同时为半导体材料的其它化学元素添加量。 还公开了纳米晶体的群体，制备纳米晶体的方法，组合物和包括纳米晶体的器件。

公开(公告)号：US20150285982A1

公开(公告)日：2015-10-08

申请号：US14270098

申请日：2014-05-05

Applicant: QD VISION, INC.

Inventor： SETH COE-SULLIVAN ,  JOHN R. LINTON ,  CRAIG BREEN ,  JONATHAN S. STECKEL ,  MARK COMERFORD

IPC: F21V8/00

CPC classification number: G02B6/0026 ,  B82Y20/00 ,  G02B6/0043 ,  G02B6/0065 ,  G09F13/22 ,  Y10S977/774

Abstract: A composition useful for altering the wavelength of visible or invisible light is disclosed. The composition comprising a solid host material and quantum confined semiconductor nanoparticles, wherein the nanoparticles are included in the composition in amount in the range from about 0.001 to about 15 weight percent based on the weight of the host material. The composition can further include scatterers. An optical component including a waveguide component and quantum confined semiconductor nanoparticles is also disclosed. A device including an optical component is disclosed. A system including an optical component including a waveguide component and quantum confined semiconductor nanoparticles and a light source optically coupled to the waveguide component is also disclosed. A decal, kit, ink composition, and method are also disclosed. A TFEL including quantum confined semiconductor nanoparticles on a surface thereof is also disclosed.

Abstract translation: 公开了一种可用于改变可见光或不可见光的波长的组合物。 所述组合物包含固体主体材料和量子限制半导体纳米颗粒，其中所述纳米颗粒以所述主体材料的重量计约0.001至约15重量％的范围包含在所述组合物中。 组合物可以进一步包括散射体。 还公开了包括波导部件和量子限制半导体纳米颗粒的光学部件。 公开了一种包括光学部件的装置。 还公开了一种包括包括波导部件和量子限制半导体纳米颗粒的光学部件和光学耦合到波导部件的光源的系统。 还公开了贴花，试剂盒，油墨组合物和方法。 还公开了在其表面上包括量子限制半导体纳米颗粒的TFEL。

公开(公告)号：US20150184074A1

公开(公告)日：2015-07-02

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

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：US20170125633A1

公开(公告)日：2017-05-04

申请号：US15350068

申请日：2016-11-13

Applicant: QD VISION, INC.

Inventor： PETER T. KAZLAS ,  JOHN SPENCER MORRIS ,  ROBERT J. NICK ,  ZORAN POPOVIC ,  MATTHEW STEVENSON ,  JONATHAN S. STECKEL

IPC: H01L33/06 ,  H01L33/00

CPC classification number: H01L33/06 ,  B82Y10/00 ,  B82Y20/00 ,  B82Y40/00 ,  C09K11/02 ,  C09K11/565 ,  C09K11/883 ,  H01L21/0237 ,  H01L21/02521 ,  H01L21/02557 ,  H01L21/0256 ,  H01L21/02601 ,  H01L21/02664 ,  H01L29/127 ,  H01L33/005 ,  H01L33/40

Abstract: A method of making a device comprises forming a layer comprising quantum dots over a substrate including a first electrode, fixing the layer comprising quantum dots formed over the substrate, and exposing at least a portion of, and preferably all, exposed surfaces of the fixed layer comprising quantum dots to small molecules. The layer comprising quantum dots can be preferably fixed in the absence or substantial absence of oxygen. Also disclosed is a method of making a device comprises forming a layer comprising quantum dots over a substrate including a first electrode, exposing the layer comprising quantum dots to small molecules and light flux. Also disclosed is a method of making a film including a layer comprising quantum dots, the method comprising forming a layer comprising quantum dots over a carrier substrate, fixing the layer comprising quantum dots formed over the carrier substrate, and exposing at least a portion of, and preferably all, exposed surfaces of the fixed layer comprising quantum dots to small molecules. The layer comprising quantum dots can be preferably fixed in the absence or substantial absence of oxygen. Also disclosed is a method of preparing a device component including a layer comprising quantum dots, the method comprising forming a layer comprising quantum dots over a layer comprising a charge transport material, exposing the layer comprising quantum dots to small molecules and light flux. Devices, device components, and films are also disclosed.

公开(公告)号：US20140312300A1

公开(公告)日：2014-10-23

申请号：US14246275

申请日：2014-04-07

Applicant: QD VISION, INC.

Inventor： DORAI RAMPRASAD ,  CRAIG BREEN ,  JONATHAN S. STECKEL

IPC: H01L33/28 ,  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：US20150152324A1

公开(公告)日：2015-06-04

申请号：US14500290

申请日：2014-09-29

Applicant: QD VISION, INC.

Inventor： CRAIG BREEN ,  MARSHALL COX ,  JONATHAN S. STECKEL

IPC: C09K11/02

CPC classification number: C09K11/025 ,  B82Y20/00 ,  B82Y30/00 ,  C09K11/565 ,  C09K11/881 ,  C09K11/883 ,  C30B29/605 ,  C30B33/00 ,  G01N33/54346 ,  G01N33/587 ,  Y10S977/774 ,  Y10S977/95

Abstract: A nanoparticle including an inorganic core comprising at least one metal and/or at least one semi-conductor compound comprising at least one metal includes a coating or shell disposed over at least a portion of a surface of the core. The coating can include one or more layers. Each layer of the coating can comprise a metal and/or at least one semiconductor compound. The nanoparticle further includes a ligand attached to a surface of the coating. The ligand is represented by the formula: X-Sp-Z, wherein X represents, e.g., a primary amine group, a secondary amine group, a urea, a thiourea, an imidizole group, an amide group, a phosphonic or arsonic acid group, a phosphinic or arsinic acid group, a phosphate or arsenate group, a phosphine or arsine oxide group; Sp represents a spacer group, such as a group capable of allowing a transfer of charge or an insulating group; and Z represents: (i) a reactive group capable of communicating specific chemical properties to the nanocrystal as well as provide specific chemical reactivity to the surface of the nanocrystal, and/or (ii) a group that is cyclic, halogenated, or polar a-protic. In certain embodiments, at least two chemically distinct ligands are attached to an surface of the coating, wherein the at least two ligands (I and II) are represented by the formula: X-Sp-Z. In ligand (I) X represents a phosphonic, phosphinic, or phosphategroup and in ligand (II) X represents a primary or secondary amine, or an imidizole, or an amide; In both ligands (I) and (II) Sp, which can be the same or different in the two compounds, represents a spacer group, such as a group capable of allowing a transfer of charge or an insulating group; Z, which can be the same or different in the two compounds, is a group chosen from among groups capable of communicating specific chemical properties to the nanoparticle as well as provide specific chemical reactivity to the surface of the nanoparticle. In preferred embodiments, the nanoparticle includes a core comprising a semiconductor material.