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：US20140140918A1

公开(公告)日：2014-05-22

申请号：US14081755

申请日：2013-11-15

Applicant: QD VISION, INC.

Inventor： CRAIG BREEN ,  WENHAO LIU

IPC: C01B19/04

CPC classification number: C01B19/04 ,  B82Y30/00 ,  B82Y40/00 ,  C01B19/007 ,  C01P2002/84 ,  C01P2004/64 ,  C01P2006/60 ,  H01L21/0237 ,  H01L21/02428 ,  H01L21/02557 ,  H01L21/0256 ,  H01L21/02601 ,  H01L21/02628

Abstract: A method for making semiconductor nanocrystals is disclosed, the method comprising adding a secondary phosphine chalcogenide to a solution including a metal source and a liquid medium at a reaction temperature to form a reaction product comprising a semiconductor comprising a metal and a chalcogen, and quenching the reaction mixture to form quantum dots. Methods for overcoating are also disclosed. Semiconductor nanocrystals are also disclosed.

Abstract translation: 公开了一种制备半导体纳米晶体的方法，该方法包括在反应温度下向包含金属源和液体介质的溶液中加入次膦硫属化物，以形成包含金属和硫属元素的半导体的反应产物，并淬灭 反应混合物形成量子点。 还公开了外敷方法。 还公开了半导体纳米晶体。

公开(公告)号：US20150191617A1

公开(公告)日：2015-07-09

申请号：US14531114

申请日：2014-11-03

Applicant: QD VISION, INC.

Inventor： JOHN R. LINTON ,  PETER T. KAZLAS ,  CRAIG BREEN ,  SETH COE-SULLIVAN

IPC: C09D11/52 ,  H01L33/06 ,  C09K11/02

CPC classification number: C09D11/52 ,  B41J2/2107 ,  C08K3/22 ,  C08K7/18 ,  C08K9/00 ,  C09D7/68 ,  C09D7/70 ,  C09D11/326 ,  C09D11/38 ,  C09K11/02 ,  C09K11/883 ,  H01L33/06 ,  H01L2933/0091 ,  Y10T29/49401

Abstract: An ink composition comprising a nanomaterial and a liquid vehicle, wherein the liquid vehicle comprises a composition including one or more functional groups that are capable of being cross-linked is disclosed. An ink composition comprising a nanomaterial, a liquid vehicle, and scatterers is also disclosed. An ink composition comprising a nanomaterial and a liquid vehicle, wherein the liquid vehicle comprises a perfluorocompound is further disclosed. A method for inkjet printing an ink including nanomaterial and a liquid vehicle with a surface tension that is not greater than about 25 dyne/cm is disclosed. In certain preferred embodiments, the nanomaterial comprises semiconductor nanocrystals. Devices prepared from inks and methods of the invention are also described.

Abstract translation: 一种包含纳米材料和液体载体的油墨组合物，其中所述液体载体包含包含一个或多个能够被交联的官能团的组合物。 还公开了包含纳米材料，液体载体和散射体的油墨组合物。 一种包含纳米材料和液态载体的油墨组合物，其中包含全氟化合物的液体载体进一步公开。 公开了一种用于喷墨印刷包括纳米材料和液体载体的油墨的表面张力不大于约25达因/厘米的方法。 在某些优选实施方案中，纳米材料包含半导体纳米晶体。 还描述了由本发明的油墨和方法制备的装置。

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.

公开(公告)号：US20150021521A1

公开(公告)日：2015-01-22

申请号：US14284277

申请日：2014-05-21

Applicant: QD VISION, INC.

Inventor： ROBERT J. NICK ,  CRAIG BREEN

IPC: C09K11/02 ,  C09K11/88

CPC classification number: C09K11/025 ,  B82Y20/00 ,  C09K11/02 ,  C09K11/565 ,  C09K11/883 ,  Y10S977/774

Abstract: The present invention relates to a composition including quantum dots and an emission stabilizer, products including same, and methods, including methods for improving, or enhancing the emission stability of quantum dots. Inclusion of an emission stabilizer in a composition can improve or enhance the stability of at least one emissive property of the quantum dots in the composition against degradation compared to a composition that is the same in all respects except that it does not include the emission stabilizer. Examples of such emissive properties include, by way of example only, lumen output, lumen stability, color point (e.g., CIE x, CIE y) stability, wavelength stability, FWHM of the major peak emission, absorption, solid state EQE, and quantum dot emission efficiency.

Abstract translation: 本发明涉及包含量子点和发射稳定剂的组合物，包括其的产品，以及包括改进或提高量子点的发光稳定性的方法。 在组合物中包含发射稳定剂可以改善或增强组合物中量子点的至少一种发射性质与不同于所有方面相同的组合物的降解的稳定性，不同之处在于它不包括发射稳定剂。 这样的发射性质的实例仅包括流明输出，管腔稳定性，色点（例如，CIE x，CIE y）稳定性，波长稳定性，主峰发射的FWHM，吸收，固态EQE和量子 点排放效率。

公开(公告)号：US20150013589A1

公开(公告)日：2015-01-15

申请号：US14284251

申请日：2014-05-21

Applicant: QD VISION, INC.

Inventor： WENHAO LIU ,  CRAIG BREEN

IPC: C30B7/14 ,  C30B29/48 ,  C30B7/08 ,  C30B29/68 ,  C30B7/00 ,  C30B19/12

CPC classification number: C30B7/14 ,  B22F1/0018 ,  B22F9/24 ,  B82Y30/00 ,  B82Y40/00 ,  C30B7/005 ,  C30B7/08 ,  C30B19/12 ,  C30B29/48 ,  C30B29/68 ,  H01L21/02521 ,  H01L21/02557 ,  H01L21/0256 ,  H01L21/02601 ,  H01L21/02628 ,  H01L21/10

Abstract: Quantum dots and methods of making quantum dots are provided.