公开(公告)号：US09604928B2

公开(公告)日：2017-03-28

申请号：US13370679

申请日：2012-02-10

申请人： Satoko Shitagaki ,  Satoshi Seo ,  Nobuharu Ohsawa ,  Hideko Inoue ,  Kunihiko Suzuki

发明人： Satoko Shitagaki ,  Satoshi Seo ,  Nobuharu Ohsawa ,  Hideko Inoue ,  Kunihiko Suzuki

IPC分类号： H01L29/08 ,  H01L21/00 ,  C07D209/86 ,  C07D239/26 ,  C07D241/12 ,  C07D333/76 ,  C07D409/10 ,  C07D471/04 ,  C07F15/00 ,  H01L51/00 ,  H01L51/50

CPC分类号： H01L51/0085 ,  C07D209/86 ,  C07D239/26 ,  C07D241/12 ,  C07D333/76 ,  C07D409/10 ,  C07D471/04 ,  C07F15/0033 ,  C09K11/025 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1074 ,  C09K2211/185 ,  H01L51/0052 ,  H01L51/0056 ,  H01L51/0058 ,  H01L51/0059 ,  H01L51/006 ,  H01L51/0061 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/5016 ,  H01L2251/5376 ,  H01L2251/5384 ,  H01L2251/552

摘要： A light-emitting element having high external quantum efficiency is provided. A light-emitting element having a long lifetime is provided. A light-emitting element is provided which includes a light-emitting layer containing a phosphorescent compound, a first organic compound, and a second organic compound between a pair of electrodes, in which a combination of the first organic compound and the second organic compound forms an exciplex (excited complex). The light-emitting element transfers energy by utilizing an overlap between the emission spectrum of the exciplex and the absorption spectrum of the phosphorescent compound and thus has high energy transfer efficiency. Therefore, a light-emitting element having high external quantum efficiency can be obtained.

公开(公告)号：US09203044B2

公开(公告)日：2015-12-01

申请号：US13370672

申请日：2012-02-10

申请人： Shunpei Yamazaki ,  Satoshi Seo ,  Nobuharu Ohsawa ,  Satoko Shitagaki ,  Hideko Inoue ,  Hiroshi Kadoma ,  Harue Osaka ,  Kunihiko Suzuki

发明人： Shunpei Yamazaki ,  Satoshi Seo ,  Nobuharu Ohsawa ,  Satoko Shitagaki ,  Hideko Inoue ,  Hiroshi Kadoma ,  Harue Osaka ,  Kunihiko Suzuki

IPC分类号： H01L29/20 ,  H01L21/00 ,  H01L51/50

CPC分类号： H01L51/5016 ,  H01L51/504 ,  H01L2251/5384

摘要： An organic light-emitting element having high efficiency and long lifetime is provided. An organic light-emitting body is provided which includes a host having a high electron-transport property (n-type host), a host having a high hole-transport property (p-type host), and a guest such as an iridium complex and in which the n-type host and the p-type host are located so as to be adjacent to each other. When an electron and a hole are injected to such a light-emitting body, the electron is trapped by the n-type host and the hole is trapped by the p-type host. Then, both the electron and the hole are injected to the guest, and thus the guest is brought into an excited state. In this process, less thermal deactivation occurs and the working rate of the guest is high; thus, highly efficient light emission can be obtained.

摘要翻译： 提供了高效率且寿命长的有机发光元件。 提供一种有机发光体，其包括具有高电子传输性质的主体（n型主体），具有高空穴传输性质的主体（p型主体））和诸如铱络合物的客体 并且其中n型主机和p型主机位于彼此相邻的位置。 当向这种发光体注入电子和空穴时，电子被n型主体捕获，孔被p型主体捕获。 然后，将电子和孔都注入到客体中，从而使客人处于激发状态。 在这个过程中，发生较少的热失活，客人的工作速度很高; 因此，可以获得高效的发光。

公开(公告)号：US09175213B2

公开(公告)日：2015-11-03

申请号：US13419892

申请日：2012-03-14

申请人： Satoshi Seo ,  Satoko Shitagaki ,  Nobuharu Ohsawa ,  Hideko Inoue ,  Kunihiko Suzuki

发明人： Satoshi Seo ,  Satoko Shitagaki ,  Nobuharu Ohsawa ,  Hideko Inoue ,  Kunihiko Suzuki

IPC分类号： H01J1/62 ,  C09K11/06 ,  C07D409/10 ,  H01L51/00 ,  H05B33/14 ,  H01L51/50

CPC分类号： H01L51/5028 ,  C07D409/10 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1011 ,  C09K2211/1029 ,  C09K2211/1044 ,  C09K2211/1088 ,  C09K2211/1092 ,  C09K2211/185 ,  H01L51/0056 ,  H01L51/0058 ,  H01L51/0059 ,  H01L51/006 ,  H01L51/0061 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/0085 ,  H01L51/5016 ,  H05B33/14

摘要： A light-emitting element having high external quantum efficiency is provided. A light-emitting element having low drive voltage is provided. Provided is a light-emitting element which includes a light-emitting layer containing a phosphorescent compound, a first organic compound, and a second organic compound between a pair of electrodes. A combination of the first organic compound and the second organic compound forms an exciplex (excited complex). An emission spectrum of the exciplex overlaps with an absorption band located on the longest wavelength side of an absorption spectrum of the phosphorescent compound. A peak wavelength of the emission spectrum of the exciplex is longer than or equal to a peak wavelength of the absorption band located on the longest wavelength side of the absorption spectrum of the phosphorescent compound.

摘要翻译： 提供具有高外部量子效率的发光元件。 提供具有低驱动电压的发光元件。 提供一种发光元件，其包括在一对电极之间包含磷光化合物，第一有机化合物和第二有机化合物的发光层。 第一有机化合物和第二有机化合物的组合形成激元复合物（激发络合物）。 激发子的发射光谱与位于磷光化合物的吸收光谱的最长波长侧的吸收带重叠。 激光复合物的发射光谱的峰值波长长于或等于位于磷光化合物的吸收光谱的最长波长侧的吸收带的峰值波长。

公开(公告)号：US20120217487A1

公开(公告)日：2012-08-30

申请号：US13405627

申请日：2012-02-27

申请人： Shunpei Yamazaki ,  Satoshi Seo ,  Nobuharu Ohsawa ,  Satoko Shitagaki ,  Hideko Inoue ,  Hiroshi Kadoma ,  Harue Osaka ,  Kunihiko Suzuki ,  Yasuhiko Takemura

发明人： Shunpei Yamazaki ,  Satoshi Seo ,  Nobuharu Ohsawa ,  Satoko Shitagaki ,  Hideko Inoue ,  Hiroshi Kadoma ,  Harue Osaka ,  Kunihiko Suzuki ,  Yasuhiko Takemura

IPC分类号： H01L51/54

CPC分类号： H01L51/0059 ,  H01L51/0067 ,  H01L2251/5384 ,  H01L2251/552

摘要： A light-emitting element includes a light-emitting layer including a guest, an n-type host and a p-type host between a pair of electrodes, where the difference between the energy difference between a triplet excited state and a ground state of the n-type host (or p-type host) and the energy difference between a triplet excited state and a ground state of the guest is 0.15 eV or more. Alternatively, in such a light-emitting element, the LUMO level of the n-type host is higher than the LUMO level of the guest by 0.1 eV or more, or the HOMO level of the p-type host is lower than the HOMO level of the guest by 0.1 eV or more.

摘要翻译： 发光元件包括在一对电极之间包括客体，n型主机和p型主机的发光层，其中三重激发态与基态之间的能量差之间的差异 n型主机（或p型主机），并且三重激发状态与客户的基态之间的能量差为0.15eV以上。 或者，在这种发光元件中，n型主机的LUMO电平高于客户的LUMO电平0.1eV以上，或p型主机的HOMO电平低于HOMO电平 的客人0.1 eV以上。

公开(公告)号：US09929350B2

公开(公告)日：2018-03-27

申请号：US13405627

申请日：2012-02-27

申请人： Shunpei Yamazaki ,  Satoshi Seo ,  Nobuharu Ohsawa ,  Satoko Shitagaki ,  Hideko Inoue ,  Hiroshi Kadoma ,  Harue Osaka ,  Kunihiko Suzuki ,  Yasuhiko Takemura

发明人： Shunpei Yamazaki ,  Satoshi Seo ,  Nobuharu Ohsawa ,  Satoko Shitagaki ,  Hideko Inoue ,  Hiroshi Kadoma ,  Harue Osaka ,  Kunihiko Suzuki ,  Yasuhiko Takemura

IPC分类号： H01L29/08 ,  H01L35/24 ,  H01L51/00

CPC分类号： H01L51/0059 ,  H01L51/0067 ,  H01L2251/5384 ,  H01L2251/552

摘要： A light-emitting element includes a light-emitting layer including a guest, an n-type host and a p-type host between a pair of electrodes, where the difference between the energy difference between a triplet excited state and a ground state of the n-type host (or p-type host) and the energy difference between a triplet excited state and a ground state of the guest is 0.15 eV or more. Alternatively, in such a light-emitting element, the LUMO level of the n-type host is higher than the LUMO level of the guest by 0.1 eV or more, or the HOMO level of the p-type host is lower than the HOMO level of the guest by 0.1 eV or more.

公开(公告)号：US08994263B2

公开(公告)日：2015-03-31

申请号：US13370676

申请日：2012-02-10

申请人： Satoko Shitagaki ,  Satoshi Seo ,  Nobuharu Ohsawa ,  Hideko Inoue ,  Masahiro Takahashi ,  Kunihiko Suzuki

发明人： Satoko Shitagaki ,  Satoshi Seo ,  Nobuharu Ohsawa ,  Hideko Inoue ,  Masahiro Takahashi ,  Kunihiko Suzuki

IPC分类号： H05B33/14 ,  H01L51/00 ,  H01L51/50

CPC分类号： H01L51/5016 ,  C09K11/025 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1044 ,  C09K2211/185 ,  H01L51/0052 ,  H01L51/0056 ,  H01L51/0058 ,  H01L51/006 ,  H01L51/0061 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/0085 ,  H01L51/5056 ,  H01L51/5072 ,  H01L51/5088 ,  H01L51/5092 ,  H01L51/5218 ,  H01L51/5234 ,  H01L2251/55 ,  H05B33/14

摘要： Provided is a light-emitting element with high external quantum efficiency, or a light-emitting element with a long lifetime. The light-emitting element includes, between a pair of electrodes, a light-emitting layer including a guest material and a host material, in which an emission spectrum of the host material overlaps with an absorption spectrum of the guest material, and phosphorescence is emitted by conversion of an excitation energy of the host material into an excitation energy of the guest material. By using the overlap between the emission spectrum of the host material and the absorption spectrum of the guest material, the energy smoothly transfers from the host material to the guest material, so that the energy transfer efficiency of the light-emitting element is high. Accordingly, a light-emitting element with high external quantum efficiency can be achieved.

摘要翻译： 提供具有高外部量子效率的发光元件或具有长寿命的发光元件。 发光元件在一对电极之间包括包含客体材料的发光层和主体材料，其中主体材料的发射光谱与客体材料的吸收光谱重叠，并且发射磷光 通过将主体材料的激发能转化为客体材料的激发能量。 通过使用主体材料的发射光谱和客体材料的吸收光谱之间的重叠，能量从主体材料平滑地转移到客体材料，使得发光元件的能量传递效率高。 因此，可以实现具有高外部量子效率的发光元件。

公开(公告)号：US08889266B2

公开(公告)日：2014-11-18

申请号：US11908010

申请日：2006-03-14

申请人： Hideko Inoue ,  Satoko Shitagaki ,  Satoshi Seo ,  Nobuharu Ohsawa

发明人： Hideko Inoue ,  Satoko Shitagaki ,  Satoshi Seo ,  Nobuharu Ohsawa

IPC分类号： H01J1/63 ,  C07F15/00 ,  H01L51/00 ,  C09K11/06 ,  H05B33/14 ,  H01L51/50

CPC分类号： H01L51/0085 ,  C07F15/0033 ,  C09K11/06 ,  C09K2211/1044 ,  C09K2211/185 ,  H01L51/0079 ,  H01L51/5016 ,  H05B33/14

摘要： It is an object of the present invention to provide an organometallic complex which can increase recombination efficiency of electrons and holes. One aspect of the present invention is an organometallic complex having a structure represented by a general formula (1), wherein each of R1 and R2 is any of a halogen group, a —CF3 group, a cyano group, and an alkoxycarbonyl group, each of R3 and R4 is any of hydrogen and an alkyl group having 1 to 4 carbon atoms, and M is an element that belongs to Group 9 or 10 of the periodic table.

摘要翻译： 本发明的目的是提供一种能提高电子和空穴的复合效率的有机金属络合物。 本发明的一个方面是具有由通式（1）表示的结构的有机金属配合物，其中R 1和R 2各自为卤素基，-CF 3基，氰基和烷氧基羰基中的任一个，各自为 R 3和R 4是氢和具有1至4个碳原子的烷基中的任何一个，M是属于周期表第9或10族的元素。

公开(公告)号：US08637167B2

公开(公告)日：2014-01-28

申请号：US12899975

申请日：2010-10-07

申请人： Nobuharu Ohsawa ,  Hiroko Abe ,  Hideko Inoue ,  Satoko Shitagaki ,  Satoshi Seo

发明人： Nobuharu Ohsawa ,  Hiroko Abe ,  Hideko Inoue ,  Satoko Shitagaki ,  Satoshi Seo

IPC分类号： H01L51/54 ,  C09K11/06

CPC分类号： C09K11/06 ,  C09K2211/1044 ,  C09K2211/185 ,  H01L27/3244 ,  H01L51/0061 ,  H01L51/0072 ,  H01L51/0085 ,  H01L51/5016 ,  H01L51/5278 ,  H05B33/14 ,  Y10S428/917

摘要： Disclosed are an organometallic complex and an electronic device including a light-emitting device having the organometallic complex. The organometallic complex is ortho-metalated by a ligand with a diphenylquinoxaline moiety having an electron-withdrawing group on the phenyl groups. The ability of the organometallic complex to provide a red-emissive light-emitting device with excellent color purity and an extremely long lifetime enables the production of an electronic device with a full-color display portion with excellent color productivity and durability.

摘要翻译： 公开了一种有机金属络合物和包括具有有机金属络合物的发光器件的电子器件。 有机金属络合物通过在苯基上具有吸电子基团的二苯基喹喔啉部分的配体进行邻位金属化。 有机金属络合物提供具有优异色纯度和极长寿命的红发发光装置的能力使得能够生产具有优异的彩色生产率和耐久性的全色显示部分的电子装置。

公开(公告)号：US08853680B2

公开(公告)日：2014-10-07

申请号：US13429560

申请日：2012-03-26

申请人： Shunpei Yamazaki ,  Satoshi Seo ,  Satoko Shitagaki ,  Nobuharu Ohsawa ,  Hideko Inoue ,  Hiroshi Kadoma ,  Harue Osaka

发明人： Shunpei Yamazaki ,  Satoshi Seo ,  Satoko Shitagaki ,  Nobuharu Ohsawa ,  Hideko Inoue ,  Hiroshi Kadoma ,  Harue Osaka

IPC分类号： H01L29/08 ,  H01L21/00 ,  H01L51/50 ,  H01L51/00 ,  H01L27/32

CPC分类号： H01L51/504 ,  H01L27/3209 ,  H01L51/0059 ,  H01L51/0061 ,  H01L51/0071 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/0085 ,  H01L51/5016 ,  H01L51/5056 ,  H01L51/5072 ,  H01L2251/5346 ,  H01L2251/5376 ,  H01L2251/5384

摘要： A light-emitting element having extremely high efficiency of approximately 25% is provided. The light-emitting element includes a light-emitting layer which contains a phosphorescent guest, an n-type host, and a p-type host, where the light-emitting layer is interposed between an n-type layer including the n-type host and a p-type layer including the p-type host, and where the n-type host and the p-type host are able to form an exciplex in the light-emitting layer. The light-emitting element exhibits an extremely high emission efficiency (power efficiency of 74.3 lm/W, external quantum efficiency of 24.5%, energy efficiency of 19.3%) at a low driving voltage (2.6 V) at which luminance of 1200 cd/m2 is attainable.

摘要翻译： 提供了具有极高效率约25％的发光元件。 发光元件包括含有磷光客体，n型主体和p型主体的发光层，其中发光层插入在包括n型主体的n型层之间 以及包含p型主体的p型层，其中n型主体和p型主体能够在发光层中形成激光复合物。 在1200cd / m2的亮度的低驱动电压（2.6V）下，发光元件显示出极高的发光效率（74.3lm / W的功率效率，24.5％的外部量子效率，能量效率为19.3％） 是可以实现的

公开(公告)号：US08736157B2

公开(公告)日：2014-05-27

申请号：US13433508

申请日：2012-03-29

申请人： Satoshi Seo ,  Satoko Shitagaki ,  Nobuharu Ohsawa ,  Hideko Inoue ,  Hiroshi Kadoma ,  Harue Osaka ,  Shunpei Yamazaki

发明人： Satoshi Seo ,  Satoko Shitagaki ,  Nobuharu Ohsawa ,  Hideko Inoue ,  Hiroshi Kadoma ,  Harue Osaka ,  Shunpei Yamazaki

IPC分类号： H05B33/14

CPC分类号： H01L51/5028 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1044 ,  C09K2211/185 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/0085 ,  H01L51/5016 ,  H01L51/5024 ,  H05B33/14

摘要： To provide a light-emitting element with high emission efficiency or long lifetime, in which the use amount of a phosphorescent compound is small. To provide a light-emitting element including a light-emitting layer between a pair of electrodes, wherein the light-emitting layer includes a phosphorescent compound, a first organic compound, and a second organic compound, and the combination of the first organic compound and the second organic compound forms an exciplex. The light-emitting element transfers energy by utilizing the overlap between the emission spectrum of the exciplex and the absorption spectrum of the phosphorescent compound and thus has high energy transfer efficiency, even when the concentration of the phosphorescent compound is low.

摘要翻译： 为了提供磷光化合物的使用量小的发光效率高，寿命长的发光元件。 为了提供一种在一对电极之间包括发光层的发光元件，其中发光层包括磷光化合物，第一有机化合物和第二有机化合物，以及第一有机化合物和 第二有机化合物形成激元复合物。 发光元件利用激光复合物的发射光谱和磷光化合物的吸收光谱之间的重叠而传递能量，因此即使当磷光化合物的浓度低时，也具有高的能量转移效率。