公开(公告)号：US08704253B2

公开(公告)日：2014-04-22

申请号：US10550653

申请日：2004-03-19

申请人： Susumu Noda ,  Takashi Asano ,  Masayuki Fujita ,  Hiroshi Ohata

发明人： Susumu Noda ,  Takashi Asano ,  Masayuki Fujita ,  Hiroshi Ohata

IPC分类号： H01L33/00

CPC分类号： H01L51/5275 ,  H01L51/0035 ,  H01L51/0036 ,  H01L51/0037 ,  H01L51/0038 ,  H01L51/0051 ,  H01L51/0052 ,  H01L51/0059 ,  H01L51/007 ,  H01L51/5262

摘要： In conventional organic EL light-emitting devices, the ITO used for a transparent electrode has a refractive index of about 2.0 larger than the refractive index of 1.5 of a transparent glass substrate. As a result, the mode of most of light traveling from the transparent electrode toward the glass substrate is the transparent electrode guided mode, and no light is emitted from the transparent electrode toward the glass substrate. According to the invention, the light extraction efficiency of conventional light-emitting devices such as organic EL light-emitting devices is improved by using mode conversion means so as to solve the problem that conventional light-emitting devices such as organic EL light-emitting devices have low light extraction efficiencies. A light-emitting device of the invention comprises a light-emitting layer on a substrate and mode conversion means for converting the mode from the guided mode into an emission mode. The mode conversion means is provided in the substrate, in the light-emitting layer, or at the interface between the substrate and the light-emitting layer.

摘要翻译： 在传统的有机EL发光器件中，用于透明电极的ITO具有比透明玻璃衬底的折射率1.5大约2.0的折射率。 结果，从透明电极朝向玻璃基板行进的大部分光的模式是透明电极引导模式，并且没有光从透明电极朝向玻璃基板发射。 根据本发明，通过使用模式转换装置来提高诸如有机EL发光器件的常规发光装置的光提取效率，以解决诸如有机EL发光装置之类​​的常规发光装置的问题 具有低光提取效率。 本发明的发光装置包括在基板上的发光层和用于将模式从导模转换为发射模式的模式转换装置。 模式转换装置设置在基板，发光层中或基板与发光层之间的界面处。

公开(公告)号：US20070120136A1

公开(公告)日：2007-05-31

申请号：US10550653

申请日：2004-03-19

申请人： Susumu Noda ,  Takashi Asano ,  Masayuki Fujita ,  Hiroshi Ohata

发明人： Susumu Noda ,  Takashi Asano ,  Masayuki Fujita ,  Hiroshi Ohata

IPC分类号： H01L33/00

CPC分类号： H01L51/5275 ,  H01L51/0035 ,  H01L51/0036 ,  H01L51/0037 ,  H01L51/0038 ,  H01L51/0051 ,  H01L51/0052 ,  H01L51/0059 ,  H01L51/007 ,  H01L51/5262

摘要： In conventional organic EL light-emitting devices, the ITO used for a transparent electrode has a refractive index of about 2.0 larger than the refractive index of 1.5 of a transparent glass substrate. As a result, the mode of most of light traveling from the transparent electrode toward the glass substrate is the transparent electrode guided mode, and no light is emitted from the transparent electrode toward the glass substrate. According to the invention, the light extraction efficiency of conventional light-emitting devices such as organic EL light-emitting devices is improved by using mode conversion means so as to solve the problem that conventional light-emitting devices such as organic EL light-emitting devices have low light extraction efficiencies. A light-emitting device of the invention comprises a light-emitting layer on a substrate and mode conversion means for converting the mode from the guided mode into an emission mode. The mode conversion means is provided in the substrate, in the light-emitting layer, or at the interface between the substrate and the light-emitting layer.

摘要翻译： 在传统的有机EL发光器件中，用于透明电极的ITO具有比透明玻璃衬底的折射率1.5大约2.0的折射率。 结果，从透明电极朝向玻璃基板行进的大部分光的模式是透明电极引导模式，并且没有光从透明电极朝向玻璃基板发射。 根据本发明，通过使用模式转换装置来提高诸如有机EL发光器件的常规发光装置的光提取效率，以解决诸如有机EL发光装置之类​​的常规发光装置的问题 具有低光提取效率。 本发明的发光装置包括在基板上的发光层和用于将模式从导模转换为发射模式的模式转换装置。 模式转换装置设置在基板，发光层中或基板与发光层之间的界面处。

公开(公告)号：US09324891B2

公开(公告)日：2016-04-26

申请号：US13518308

申请日：2010-12-22

申请人： Hiroaki Shigeta ,  Yuhji Yashiro ,  Yuhsuke Tsuda ,  Shintaro Miyanishi ,  Susumu Noda ,  Masayuki Fujita ,  Yoshinori Tanaka

发明人： Hiroaki Shigeta ,  Yuhji Yashiro ,  Yuhsuke Tsuda ,  Shintaro Miyanishi ,  Susumu Noda ,  Masayuki Fujita ,  Yoshinori Tanaka

IPC分类号： H01L31/0232 ,  H01L31/0352 ,  H01L31/075 ,  H01L31/0392

CPC分类号： H01L31/035227 ,  H01L31/0232 ,  H01L31/02327 ,  H01L31/035281 ,  H01L31/0392 ,  H01L31/03921 ,  H01L31/054 ,  H01L31/075 ,  Y02E10/52 ,  Y02E10/548

摘要： A solar cell (1) of the present invention includes a photoelectric conversion layer (2) and a photonic crystal provided inside the photoelectric conversion layer (2) in order to have a photonic band gap. The photonic crystal has defects (31) in order to provide a defect level in the photonic band gap. QV which is a Q value representing a magnitude of a resonance effect yielded by coupling between the photonic crystal and an outside is substantially equal to Qα which is a Q value representing a magnitude of a resonance effect yielded by a medium of the photoelectric conversion layer (2).

摘要翻译： 本发明的太阳能电池（1）包括光电转换层（2）和设置在光电转换层（2）内的光子晶体，以便具有光子带隙。 光子晶体具有缺陷（31），以便提供光子带隙中的缺陷水平。 QV是表示由光子晶体与外部之间的耦合产生的共振效应的大小的Q值，基本上等于作为表示由光电转换层的介质产生的共振效应的大小的Q值的Qα（ 2）。

公开(公告)号：US20120273911A1

公开(公告)日：2012-11-01

申请号：US13520126

申请日：2010-12-17

申请人： Hiroaki Shigeta ,  Yuhji Yashiro ,  Yuhsuke Tsuda ,  Susumu Noda ,  Masayuki Fujita ,  Yoshinori Tanaka

发明人： Hiroaki Shigeta ,  Yuhji Yashiro ,  Yuhsuke Tsuda ,  Susumu Noda ,  Masayuki Fujita ,  Yoshinori Tanaka

IPC分类号： H01L31/0232

CPC分类号： H01L31/02327

摘要： A photoelectric transducer (10) including: a semiconductor layer (13); and a photonic crystal (21) formed inside the semiconductor layer, the photonic crystal being formed by providing nanorods (19) inside the semiconductor layer, each of the nanorods having a refractive index lower than that of a medium of the semiconductor layer, the nanorods being provided two-dimensionally and periodically at a pitch of not less than λ/4 nor more than λ, where λ is a wavelength of a peak of resonance caused by the photonic crystal, the photoelectric transducer satisfying the following formula: 0.2QV≦Qα≦5.4QV where Qv is (a) a Q value which indicates a magnitude of an effect of resonance caused by coupling between the photonic crystal and an external world and (b) in proportion to a reciprocal of a coefficient κV indicating a strength of the coupling between the photonic crystal and the external world, and Qa is (a) a Q value which indicates a magnitude of an effect of resonance caused by the medium of the semiconductor layer and (b) in proportion to a reciprocal of a coefficient αa of light absorption by the medium of the semiconductor layer. This allows an increase in light absorption ratio of a photoelectric transducer including a photonic crystal structure.

摘要翻译： 一种光电变换器（10），包括：半导体层（13）; 和形成在所述半导体层内的光子晶体（21），所述光子晶体通过在所述半导体层内部提供纳米棒（19）形成，所述纳米棒的折射率低于所述半导体层的介质的折射率，所述纳米棒 以不小于λ/ 4的间距不大于λ的间隔二维和周期地设置，其中λ是由光子晶体引起的共振峰的波长，光电传感器满足下式：0.2QV＆nlE;Qα＆nlE 其中Qv是（a）Q值，其表示由光子晶体和外部世界之间的耦合引起的谐振的影响的大小，以及（b）与系数的倒数成比例，kgr; V表示强度 的光子晶体与外界之间的耦合，Qa是（a）Q值，其表示由半导体层的介质引起的共振效应的大小，（b）与 由半导体层的介质的光吸收系数αa的倒数。 这允许包括光子晶体结构的光电变换器的光吸收率增加。

公开(公告)号：US20130105927A1

公开(公告)日：2013-05-02

申请号：US13520495

申请日：2010-12-22

申请人： Hiroaki Shigeta ,  Yuhji Yashiro ,  Yuhsuke Tsuda ,  Susumu Noda ,  Masayuki Fujita ,  Yoshinori Tanaka

发明人： Hiroaki Shigeta ,  Yuhji Yashiro ,  Yuhsuke Tsuda ,  Susumu Noda ,  Masayuki Fujita ,  Yoshinori Tanaka

IPC分类号： H01L31/0232

CPC分类号： H01L31/0232 ,  H01L31/0248 ,  H01L31/04 ,  H01L31/0547 ,  Y02E10/52

摘要： A photoelectric conversion element (1) of the present invention includes: a photoelectric conversion layer (2); and a photonic crystal provided inside the photoelectric conversion layer (2) to provide a photonic band gap, the photonic crystal being designed such that nanorods (30) whose refraction index is smaller than that of a medium of the photoelectric conversion layer (2) are provided periodically inside the photoelectric conversion layer (2), and there are provided defects (31) to provide a defect level in the photonic band gap, when a wavelength of a resonance peak corresponding to the defect level is λ, the nanorods (30) are provided two-dimensionally with a pitch of not less than λ/7 and not more than λ/2, and a coefficient κV indicative of strength of coupling between the photonic crystal and the outside is substantially equal to a coefficient α of absorption of light by the photoelectric conversion layer (2).

摘要翻译： 本发明的光电转换元件（1）包括：光电转换层（2）; 和设置在光电转换层（2）内部以提供光子带隙的光子晶体，所述光子晶体被设计为使得其折射率小于光电转换层（2）的介质的折射率的纳米棒（30）是 周期性地设置在光电转换层（2）内，并且当与缺陷水平相对应的谐振峰值的波长为λ时，存在提供光子带隙中的缺陷水平的缺陷（31），纳米棒（30） 以不小于λ/ 7且不大于λ/ 2的间距二维地提供，并且指示光子晶体和外部之间的耦合强度的系数kappaV基本上等于光吸收系数α 通过光电转换层（2）。

公开(公告)号：US07590325B2

公开(公告)日：2009-09-15

申请号：US10507889

申请日：2003-03-26

申请人： Susumu Noda ,  Masamitu Mochizuki ,  Takashi Asano

发明人： Susumu Noda ,  Masamitu Mochizuki ,  Takashi Asano

IPC分类号： G02B6/10

CPC分类号： G02B6/1225 ,  B82Y20/00

摘要： The present invention provides an optical multiplexer/demultiplexer that can be smaller in size and higher in Q-factor or efficiency. This object is achieved by the following construction. In a slab-shaped body 11, low refractive index areas 12 having a refractive index lower than that of the material of the body 11 are periodically arranged to construct a two-dimensional photonic crystal, in which a waveguide 13 is formed by not boring holes 12 linearly. A donor type cluster defect 14 is formed by not boring holes 12 at two ore more lattice points located adjacent to the waveguide 13. With this construction, only a specific wavelength of light included in the light propagating through the waveguide 13 resonates at the donor type cluster 14, and the light thus trapped is released to the outside (demultiplexing). Conversely, only a specific wavelength of light may be introduced through the donor type cluster defect 14 into the waveguide 13 (multiplexing).

摘要翻译： 本发明提供了一种光复用器/解复用器，其尺寸可以更小并且Q因子或效率更高。 该目的通过以下结构实现。 在板状体11中，周期性地布置折射率低于主体11的折射率的低折射率区域12，以构成二维光子晶体，其中通过不钻孔形成波导13 12线性。 供体型簇缺陷14通过在与波导13相邻的两个多个晶格点处不钻孔12而形成。利用这种结构，包含在通过波导13传播的光中的特定波长的光在施主型 簇14，并且被捕获的光被释放到外部（解复用）。 相反，只有特定波长的光可以通过供体型簇缺陷14引入波导13（复用）。

公开(公告)号：US07397994B2

公开(公告)日：2008-07-08

申请号：US10537119

申请日：2003-12-05

申请人： Susumu Noda ,  Takashi Asano ,  Yoshinori Tanaka

发明人： Susumu Noda ,  Takashi Asano ,  Yoshinori Tanaka

IPC分类号： G02B6/10

CPC分类号： B82Y20/00 ,  G02B6/12002 ,  G02B6/1225 ,  G02F2202/32

摘要： The present invention aims to provide a two-dimensional photonic crystal having an optical resonator, which allows the control of the front/back emission ratio of light. To achieve this object, a refractive index member made of a material having a refractive index different from that of air is mounted on a two-dimensional photonic crystal having a body in which holes are periodically arranged. In this construction, the body and the refractive index member cooperatively function as an optical resonator located at the position where the refractive index member is mounted. The light emitted from this optical resonator is stronger on the side having a higher refractive index, i.e. on the side where the refractive index member is mounted. Accordingly, the light emitted from the side where the refractive index member is mounted is stronger than the light emitted from the other side. The ratio of the emission intensity of the two rays of light and, i.e. the front/back emission ratio, can be controlled by changing the material, shape and/or size of the refractive index member.

摘要翻译： 本发明旨在提供一种具有光谐振器的二维光子晶体，其允许控制光的前/后发射比。 为了实现该目的，由具有与空气的折射率不同的折射率的材料制成的折射率构件安装在具有周期性布置有孔的主体的二维光子晶体上。 在这种结构中，主体和折射率构件协调地用作位于折射率构件安装位置的光学谐振器。 从该光谐振器发射的光在具有较高折射率的一侧，即在折射率构件安装的一侧更强。 因此，从安装有折射率构件的一侧发射的光比从另一侧发射的光更强。 可以通过改变折射率构件的材料，形状和/或尺寸来控制两束光的发射强度的比例，即前/后发射比。

公开(公告)号：US20080145012A1

公开(公告)日：2008-06-19

申请号：US12004029

申请日：2007-12-20

申请人： Ranko Hatsuda ,  Susumu Noda ,  Takashi Asano ,  Yoshinori Tanaka ,  Eiji Miyai

发明人： Ranko Hatsuda ,  Susumu Noda ,  Takashi Asano ,  Yoshinori Tanaka ,  Eiji Miyai

IPC分类号： G02B6/10

CPC分类号： G02B6/13 ,  B82Y20/00 ,  G02B6/12004 ,  G02B6/12007 ,  G02B6/1225

摘要： The present invention intends to provide a two-dimensional photonic crystal having a high level of mechanical strength and functioning as a high-efficiency resonator. The two-dimensional photonic crystal according to the present invention includes a slab layer 31 under which a clad layer 32 is located. In the slab layer 31, areas 35 having a refractive index different from that of the slab layer 31 are cyclically arranged to create a two-dimensional photonic crystal. A portion of the cyclic arrangement of the areas 35 are omitted to form a point-like defect 36. This defect 36 functions as a resonator at which a specific wavelength of light resonates. An air-bridge cavity 37 facing the point-like defect 36 is formed over a predetermined range of the clad layer 32. In this construction, the clad layer 32 supports the slab layer 31 except for the range over which the air-bridge space 37 is formed. Therefore, the two-dimensional photonic crystal has a high level of mechanical strength. The presence of the air-bridge space 37 under the point-like defect 36 makes it easy to confine light at the point-like defect 36 by the difference in the refractive index between the slab layer 31 and the air. Thus, the point-like defect 36 functions as a high-performance resonator.

摘要翻译： 本发明旨在提供具有高水平机械强度并用作高效率谐振器的二维光子晶体。 根据本发明的二维光子晶体包括平坦层31，覆层32位于其下方。 在板坯层31中，具有不同于板坯层31的折射率的区域35循环地布置以产生二维光子晶体。 区域35的循环布置的一部分被省略以形成点状缺陷36。 该缺陷36用作特定波长的光谐振的谐振器。 在包层32的预定范围上形成面向点状缺陷36的空气桥腔37。 在这种结构中，除了形成空气桥隔间37的范围之外，包覆层32支撑板层31。 因此，二维光子晶体具有高水平的机械强度。 点状缺陷36之下的空气桥空间37的存在使得容易通过板状层31和空气之间的折射率差来限制点状缺陷36处的光。 因此，点状缺陷36用作高性能谐振器。

公开(公告)号：US07224862B2

公开(公告)日：2007-05-29

申请号：US10537513

申请日：2003-12-05

申请人： Susumu Noda ,  Takashi Asano

发明人： Susumu Noda ,  Takashi Asano

IPC分类号： G02B6/28 ,  G02B6/10

CPC分类号： G02B6/1225 ,  B82Y20/00 ,  G02B6/12007

摘要： In an in-plane heterostructure photonic crystal in which vacancies 32 are periodically arranged in each of forbidden band zones 301, 302, with different cycle distances, a waveguide 33 is formed passing through all the forbidden band zones and point-like defects 341, 342, . . . are formed in each of the forbidden band zones. Since, of all light propagating through the waveguide from the light introduction/take-out section 36 and having the frequency 52 demultiplexed from the predetermined point-like defect, the wavelength of light passing through the predetermined point-like defect is not included in transmission bands 51 of the waveguide in the adjacent forbidden band zone, so that the light is reflected on the boundaries 351 and 352 between forbidden band zones and introduced into the point-like defect. Thereby, the demultiplexing efficiency of light is improved. The same applies to the multiplexing efficiency.

摘要翻译： 在其中空位32周期性地布置在每个具有不同周期距离的禁带区301,302中的平面内异质结构光子晶体中，形成穿过所有禁带区和点状缺陷341,342的波导33 ，。 。 。 形成在每个禁带区域中。 由于在从光导入/取出部36通过波导传播的所有光从预定的点状缺陷中解复用频率52，所以通过预定点状缺陷的光的波长不包括在传输中 在相邻的禁带区域中波导的频带51，使得光在禁带区域之间的边界351和352上反射并被引入点状缺陷。 从而提高了光的解复用效率。 这同样适用于复用效率。

公开(公告)号：US20060051042A1

公开(公告)日：2006-03-09

申请号：US10537119

申请日：2003-12-05

申请人： Susumu Noda ,  Takashi Asano ,  Yoshinori Tanaka

发明人： Susumu Noda ,  Takashi Asano ,  Yoshinori Tanaka

IPC分类号： G02B6/10

CPC分类号： B82Y20/00 ,  G02B6/12002 ,  G02B6/1225 ,  G02F2202/32

摘要： The present invention aims to provide a two-dimensional photonic crystal having an optical resonator, which allows the control of the front/back emission ratio of light. To achieve this object, a refractive index member (13) made of a material having a refractive index different from that of air is mounted on a two-dimensional photonic crystal having a body (11) in which holes (12) are periodically arranged. In this construction, the body (11) and the refractive index member (13) cooperatively function as an optical resonator located at the position where the refractive index member (13) is mounted. The light emitted from this optical resonator is stronger on the side having a higher refractive index, i.e. on the side where the refractive index member is mounted. Accordingly, the light (191) emitted from the side where the refractive index member (13) is mounted is stronger than the light (192) emitted from the other side. The ratio of the emission intensity of the two rays of light (191) and (192), i.e. the front/back emission ratio, can be controlled by changing the material, shape and/or size of the refractive index member.

摘要翻译： 本发明旨在提供一种具有光谐振器的二维光子晶体，其允许控制光的前/后发射比。 为了实现这个目的，由具有不同于空气的折射率的材料制成的折射率构件（13）安装在具有周期性布置有孔（12）的主体（11）的二维光子晶体上。 在这种结构中，主体（11）和折射率构件（13）协调地用作位于折射率构件（13）的位置处的光学谐振器。 从该光谐振器发射的光在具有较高折射率的一侧，即在折射率构件安装的一侧更强。 因此，从折射率构件（13）安装的一侧发射的光（191）比从另一侧发射的光（192）更强。 可以通过改变折射率构件的材料，形状和/或尺寸来控制两束光（191）和（192）的发射强度的比率，即前/后发射比。