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    Flexible devices including semiconductor nanocrystals, arrays, and methods
    1.
    发明授权
    Flexible devices including semiconductor nanocrystals, arrays, and methods 有权
    柔性器件包括半导体纳米晶体，阵列和方法

    公开(公告)号：US09431623B2

    公开(公告)日：2016-08-30

    申请号：US12851336

    申请日：2010-08-05

    申请人： Peter T. Kazlas ,  Marshall Cox ,  Seth Coe-Sullivan ,  Ioannis Kymissis

    发明人： Peter T. Kazlas ,  Marshall Cox ,  Seth Coe-Sullivan ,  Ioannis Kymissis

    IPC分类号： H01L51/50 ,  B82Y20/00 ,  H01L27/32 ,  H01L51/00 ,  H01L51/52

    CPC分类号： H01L51/502 ,  B82Y20/00 ,  H01L27/3293 ,  H01L51/0037 ,  H01L51/5203 ,  H01L51/5237 ,  H01L51/5246 ,  H01L51/5253 ,  H01L51/5259 ,  H01L2251/5338

    摘要： The present invention relates to flexible devices including semiconductor nanocrystals, arrays including such devices, systems including the foregoing, and related methods. In one embodiment, a flexible light-emitting device includes a flexible substrate including a first electrode, an emissive layer comprising semiconductor nanocrystals disposed over the substrate, and second electrode disposed over the emissive layer comprising semiconductor nanocrystals, wherein, when the device is curved, the emissive layer comprising semiconductor nanocrystals lies substantially in the neutral plane of the device. In another embodiment, a light-emitting device includes an emissive layer comprising semiconductor nanocrystals disposed between two flexible substrates, a first electrode disposed over the emissive layer comprising semiconductor nanocrystals, and a second electrode disposed under the emissive layer comprising semiconductor nanocrystals. In certain preferred embodiments, at least one charge transport layer is disposed between one of the electrodes and the layer comprising semiconductor nanocrystals.

    摘要翻译： 本发明涉及包括半导体纳米晶体的柔性器件，包括这种器件的阵列，包括前述的系统以及相关方法。 在一个实施例中，柔性发光器件包括柔性衬底，其包括第一电极，包含设置在衬底上的半导体纳米晶体的发射层和设置在包含半导体纳米晶体的发射层上的第二电极，其中当器件弯曲时， 包括半导体纳米晶体的发射层基本上位于器件的中性平面中。 在另一个实施例中，发光器件包括发射层，发射层包括设置在两个柔性衬底之间的半导体纳米晶体，设置在包含半导体纳米晶体的发射层上的第一电极以及设置在包含半导体纳米晶体的发射层下方的第二电极。 在某些优选实施例中，至少一个电荷传输层设置在电极之一和包含半导体纳米晶体的层之间。

    FLEXIBLE DEVICES INCLUDING SEMICONDUCTOR NANOCRYSTALS, ARRAYS, AND METHODS
    3.
    发明申请
    FLEXIBLE DEVICES INCLUDING SEMICONDUCTOR NANOCRYSTALS, ARRAYS, AND METHODS 有权
    包括半导体纳米晶体的柔性器件，阵列和方法

    公开(公告)号：US20110095261A1

    公开(公告)日：2011-04-28

    申请号：US12851336

    申请日：2010-08-05

    申请人： Peter T. Kazlas ,  Marshall Cox ,  Seth Coe-Sullivan ,  Ioannis Kymissis

    发明人： Peter T. Kazlas ,  Marshall Cox ,  Seth Coe-Sullivan ,  Ioannis Kymissis

    IPC分类号： H01L33/06 ,  B82Y20/00 ,  B82Y99/00

    CPC分类号： H01L51/502 ,  B82Y20/00 ,  H01L27/3293 ,  H01L51/0037 ,  H01L51/5203 ,  H01L51/5237 ,  H01L51/5246 ,  H01L51/5253 ,  H01L51/5259 ,  H01L2251/5338

    摘要： The present invention relates to flexible devices including semiconductor nanocrystals, arrays including such devices, systems including the foregoing, and related methods. In one embodiment, a flexible light-emitting device includes a flexible substrate including a first electrode, an emissive layer comprising semiconductor nanocrystals disposed over the substrate, and second electrode disposed over the emissive layer comprising semiconductor nanocrystals, wherein, when the device is curved, the emissive layer comprising semiconductor nanocrystals lies substantially in the neutral plane of the device. In another embodiment, a light-emitting device includes an emissive layer comprising semiconductor nanocrystals disposed between two flexible substrates, a first electrode disposed over the emissive layer comprising semiconductor nanocrystals, and a second electrode disposed under the emissive layer comprising semiconductor nanocrystals. In certain preferred embodiments, at least one charge transport layer is disposed between one of the electrodes and the layer comprising semiconductor nanocrystals.

    摘要翻译： 本发明涉及包括半导体纳米晶体的柔性器件，包括这种器件的阵列，包括前述的系统以及相关方法。 在一个实施例中，柔性发光器件包括柔性衬底，其包括第一电极，包含设置在衬底上的半导体纳米晶体的发射层和设置在包含半导体纳米晶体的发射层上的第二电极，其中当器件弯曲时， 包括半导体纳米晶体的发射层基本上位于器件的中性平面中。 在另一个实施例中，发光器件包括发射层，发射层包括设置在两个柔性衬底之间的半导体纳米晶体，设置在包含半导体纳米晶体的发射层上的第一电极以及设置在包含半导体纳米晶体的发射层下方的第二电极。 在某些优选实施例中，至少一个电荷传输层设置在电极之一和包含半导体纳米晶体的层之间。

    Light-emitting devices and displays with improved performance
    6.
    发明申请
    Light-emitting devices and displays with improved performance 有权
    具有改进性能的发光装置和显示器

    公开(公告)号：US20090278141A1

    公开(公告)日：2009-11-12

    申请号：US12313779

    申请日：2008-11-24

    申请人： Seth Coe-Sullivan ,  Dorai Ramprasad ,  Ioannis Kymissis ,  Vladimir Bulovic ,  Marshall Cox ,  Caroline J. Roush ,  Peter T. Kazlas ,  Jonathan S. Steckel

    发明人： Seth Coe-Sullivan ,  Dorai Ramprasad ,  Ioannis Kymissis ,  Vladimir Bulovic ,  Marshall Cox ,  Caroline J. Roush ,  Peter T. Kazlas ,  Jonathan S. Steckel

    IPC分类号： H01L33/00

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

    摘要： 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.

    摘要翻译： 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。

    Light emitting devices and displays with improved performance
    8.
    发明申请
    Light emitting devices and displays with improved performance 审中-公开
    具有改进性能的发光器件和显示器

    公开(公告)号：US20100051901A1

    公开(公告)日：2010-03-04

    申请号：US12454705

    申请日：2009-05-21

    申请人： Peter T. Kazlas ,  Marshall Cox ,  Seth Coe-Sullivan ,  Dorai Ramprasad ,  Jonathan S. Steckel ,  Craig Breen ,  Caroline J. Roush ,  Mead Misic

    发明人： Peter T. Kazlas ,  Marshall Cox ,  Seth Coe-Sullivan ,  Dorai Ramprasad ,  Jonathan S. Steckel ,  Craig Breen ,  Caroline J. Roush ,  Mead Misic

    IPC分类号： H01L33/00

    CPC分类号： C09K11/565 ,  B82Y20/00 ,  B82Y30/00 ,  H01L51/5012 ,  H05B33/14

    摘要： Light emitting devices and devices with improved performance are disclosed. In one embodiment, a light emitting device includes an emissive material disposed between a first electrode, and a second electrode, wherein the emissive material comprises semiconductor nanocrystals capable of emitting light including a maximum peak emission in the blue region of the spectrum upon excitation, wherein the light emitting device can have a peak external quantum efficiency of at least about 1.0 percent. Also disclosed is a display including at least one light emitting device including an emissive material disposed between a first electrode, and a second electrode, wherein the at least one light emitting device can have a peak external quantum efficiency of at least about 1.0 percent. In another embodiment, a light emitting device includes an emissive material disposed between a first electrode and a second electrode. The emissive material comprises semiconductor nanocrystals capable of emitting light including a maximum peak emission in the blue region of the spectrum upon excitation. The device further includes a first spacer material disposed between the emissive material and the first electrode. In certain embodiments, the device further includes a first material capable of transporting charge disposed between the emissive material and the first electrode, wherein the first spacer material is disposed between the emissive material and the first electrode. In certain embodiments, for example, light emitting devices can have a maximum peak emission in a range from about 380 nm to about 500 nm. In certain embodiments, the light emitting device can have a maximum peak emission peak in the range from about 450 nm to about 490 nm. Displays including light emitting devices are also disclosed.

    摘要翻译： 公开了具有改进性能的发光器件和器件。 在一个实施例中，发光器件包括设置在第一电极和第二电极之间的发光材料，其中发射材料包含能够发射包括在激发的光谱的蓝色区域中的最大峰值发射的光的半导体纳米晶体，其中 发光器件可以具有至少约1.0％的峰值外部量子效率。 还公开了一种显示器，其包括至少一个包括设置在第一电极和第二电极之间的发光材料的发光器件，其中所述至少一个发光器件可以具有至少约1.0％的峰值外部量子效率。 在另一个实施例中，发光器件包括设置在第一电极和第二电极之间的发光材料。 发射材料包括能够发射光的半导体纳米晶体，其包括在激发时在光谱的蓝色区域中的最大峰值发射。 该装置还包括设置在发光材料和第一电极之间的第一间隔物材料。 在某些实施例中，该装置还包括能够传输设置在发射材料和第一电极之间的电荷的第一材料，其中第一间隔物材料设置在发光材料和第一电极之间。 在某些实施例中，例如，发光器件可以具有在约380nm至约500nm范围内的最大峰值发射。 在某些实施方案中，发光器件可具有在约450nm至约490nm范围内的最大峰值发射峰值。 还公开了包括发光器件的显示器。

    Composites and devices including nanoparticles
    9.
    发明申请
    Composites and devices including nanoparticles 审中-公开
    复合材料和器件包括纳米粒子

    公开(公告)号：US20100068468A1

    公开(公告)日：2010-03-18

    申请号：US12455144

    申请日：2009-05-28

    申请人： Seth Coe-Sullivan ,  Craig Breen ,  Marshall Cox ,  Peter T. Kazlas

    发明人： Seth Coe-Sullivan ,  Craig Breen ,  Marshall Cox ,  Peter T. Kazlas

    IPC分类号： B32B5/16 ,  B32B3/00

    CPC分类号： H01L51/5012 ,  B82Y20/00 ,  B82Y30/00 ,  C09K11/025 ,  Y10T428/24612 ,  Y10T428/25

    摘要： A composite including a first layer comprising nanoparticles, at least a portion of which include a ligand attached to a surface of a nanoparticle, and a second layer disposed over a predetermined area of the first layer, wherein the second layer is continuous or uninterrupted by voids across the predetermined area, and has a thickness less than or equal to about 30 nm. In certain preferred embodiments, there is a chemical affinity between the ligand and the second layer. A device including the above composite and related methods are also disclosed.

    摘要翻译： 一种复合材料，其包括包含纳米颗粒的第一层，所述第一层的至少一部分包括附着在纳米颗粒表面上的配体，以及设置在所述第一层的预定区域上的第二层，其中所述第二层是空隙连续的或不间断的 并且具有小于或等于约30nm的厚度。 在某些优选实施方案中，配体和第二层之间存在化学亲和力。 还公开了包括上述复合材料和相关方法的装置。