公开(公告)号：US20150171359A1

公开(公告)日：2015-06-18

申请号：US14537414

申请日：2014-11-10

Applicant: The Regents of the University of Michigan

Inventor： Stephen R. Forrest ,  Yifan Zhang

IPC: H01L51/50 ,  H01L51/00

CPC classification number: H01L51/5024 ,  H01L51/0072 ,  H01L51/0085 ,  H01L51/5004 ,  H01L51/5016 ,  H01L51/5072 ,  H01L51/5088 ,  H01L2251/5346 ,  H01L2251/5384

Abstract: This disclosure relates, at least in part, an organic light emitting device, which in some embodiments comprises an anode; a cathode; a first emissive layer disposed between the anode and the cathode, the first emissive layer comprising an electron transporting compound and a phosphorescent emissive dopant compound; and wherein the phosphorescent emissive dopant compound has a concentration gradient, in the emissive layer, which varies from the cathode side of the first emissive layer to the anode side of the emissive layer.

Abstract translation: 本公开至少部分地涉及有机发光器件，其在一些实施例中包括阳极; 阴极 设置在阳极和阴极之间的第一发射层，第一发射层包括电子传输化合物和磷光发光掺杂剂化合物; 并且其中所述磷光发光掺杂剂化合物在所述发射层中具有从所述第一发光层的阴极侧到所述发射层的阳极侧变化的浓度梯度。

公开(公告)号：US20150140214A1

公开(公告)日：2015-05-21

申请号：US14569129

申请日：2014-12-12

Applicant: The Regents of the University of Michigan

Inventor： Stephen R. Forrest ,  Gregory McGraw

IPC: C23C14/12 ,  C23C14/22

CPC classification number: C23C14/12 ,  B41J2/005 ,  C23C14/04 ,  C23C14/228

Abstract: A first device is provided. The device includes a print head. The print head further includes a first nozzle hermetically sealed to a first source of gas. The first nozzle has an aperture having a smallest dimension of 0.5 to 500 microns in a direction perpendicular to a flow direction of the first nozzle. At a distance from the aperture into the first nozzle that is 5 times the smallest dimension of the aperture of the first nozzle, the smallest dimension perpendicular to the flow direction is at least twice the smallest dimension of the aperture of the first nozzle.

Abstract translation: 提供第一个设备。 该装置包括打印头。 打印头还包括密封到第一气体源的第一喷嘴。 第一喷嘴在垂直于第一喷嘴的流动方向的方向上具有最小尺寸为0.5至500微米的孔。 在与第一喷嘴的孔的最小尺寸的5倍的孔到第一喷嘴的距离处，垂直于流动方向的最小尺寸至少是第一喷嘴的孔的最小尺寸的两倍。

公开(公告)号：US20140102371A1

公开(公告)日：2014-04-17

申请号：US14133833

申请日：2013-12-19

Applicant: The Regents of the University of Michigan

Inventor： Stephen R. Forrest ,  Gregory McGraw

IPC: C23C16/54

CPC classification number: B05B1/02 ,  B05C5/0291 ,  B41J2/005 ,  C23C14/12 ,  C23C14/24 ,  C23C16/54

Abstract: A first device is provided. The first device includes a print head, and a first gas source hermetically sealed to the print head. The print head further includes a first layer further comprising a plurality of apertures, each aperture having a smallest dimension of 0.5 to 500 microns. A second layer is bonded to the first layer. The second layer includes a first via in fluid communication with the first gas source and at least one of the apertures. The second layer is made of an insulating material.

Abstract translation: 提供第一个设备。 第一装置包括打印头和密封到打印头的第一气体源。 打印头还包括还包括多个孔的第一层，每个孔具有0.5至500微米的最小尺寸。 第二层结合到第一层。 第二层包括与第一气体源流体连通的第一通孔和至少一个孔。 第二层由绝缘材料制成。

公开(公告)号：US20130237001A1

公开(公告)日：2013-09-12

申请号：US13750660

申请日：2013-01-25

Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN

Inventor： Stephen R. Forrest ,  Jeramy Zimmerman ,  Kyusang Lee ,  Kuen-Ting Shiu

IPC: H01L31/18

CPC classification number: H01L31/1892 ,  H01L21/7813 ,  H01L31/0735 ,  H01L31/1852 ,  H01L31/1896 ,  Y02E10/544

Abstract: There is disclosed methods of making photosensitive devices, such as flexible photovoltaic (PV) devices, through the use of epitaxial liftoff. Also described herein are methods of preparing flexible PV devices comprising a structure having a growth substrate, wherein the selective etching of protective layers yields a smooth growth substrate that us suitable for reuse.

Abstract translation: 公开了通过使用外延剥离来制造诸如柔性光伏（PV）器件的光敏器件的方法。 本文还描述了制备包含具有生长衬底的结构的柔性PV器件的方法，其中保护层的选择性蚀刻产生了适合于再利用的平滑生长衬底。

公开(公告)号：US20250133955A1

公开(公告)日：2025-04-24

申请号：US18914827

申请日：2024-10-14

Applicant: The Regents of the University of Michigan ,  The University of Southern California

Inventor： Stephen R. Forrest ,  Yongxi Li ,  Chandler Dobson ,  Konstantin Mallon ,  Mark E. Thompson ,  Alex James Robb

IPC: H10K85/30 ,  C09K11/06 ,  H10K30/20 ,  H10K30/57 ,  H10K85/60 ,  H10K101/20

Abstract: Described are organic photovoltaic devices comprising an anode; a cathode; and a photoactive organic material in a layer disposed between the anode and the cathode, the energy difference between the triplet energy state (T1) and the singlet energy state (S1) (ΔEST) in the photoactive organic material is less than about 300 meV; and when the organic photovoltaic device is illuminated with light having an AM1.5 spectrum, the organic photovoltaic device has an open circuit voltage of greater than 0.9 V, a power conversion efficiency of greater than 22%, and an EL external quantum efficiency >5%.

公开(公告)号：US12227831B2

公开(公告)日：2025-02-18

申请号：US17235232

申请日：2021-04-20

Applicant: The Regents of the University of Michigan

Inventor： Stephen R. Forrest ,  Jeffrey A. Horowitz

IPC: H01L51/00 ,  B05D1/02 ,  C23C14/12 ,  C23C14/22 ,  C23C16/00 ,  C23C14/04 ,  H10K71/00

Abstract: Devices, systems, and techniques are provided for improved OVJP deposition using a shutter disposed within the OVJP print head, between the print head inlet and the nozzle outlets. An OVJP print head as disclosed includes an inlet for organic material entrained in a carrier gas, a micronozzle array outlet, and a shutter disposed in the gas flow path between the inlet and the micronozzle array outlet. The shutter allows for rapid cutoff of carrier gas flow through the print head with extremely low latency.

公开(公告)号：US20240357842A1

公开(公告)日：2024-10-24

申请号：US18752940

申请日：2024-06-25

Applicant: The Regents of the University of Michigan

Inventor： Stephen R. Forrest ,  Hafiz K.M. Sheriff, Jr.

IPC: H10K30/87 ,  H10K30/30 ,  H10K30/82

CPC classification number: H10K30/87 ,  H10K30/30 ,  H10K30/82

Abstract: An organic photovoltaic device comprises a first electrode, at least one organic heterojunction layer positioned over the first electrode, a second electrode positioned over the organic heterojunction layer, and a thin film stack positioned over the second electrode, comprising a plurality of sublayers of a first dielectric material alternating with a plurality of sublayers of a second dielectric material, wherein at least one of the plurality of sublayers of the first dielectric material has a thickness that is different from another of the plurality of sublayers of the first dielectric material, wherein the organic photovoltaic device has a mean transmittance of between 10% and 100% for light between 420 nm and 670 nm, with a variance of ±10%, and wherein an index contrast between the sublayers in the thin film stack is at least 0.1. A method of fabricating an organic photovoltaic device is also disclosed.

公开(公告)号：US20240268145A1

公开(公告)日：2024-08-08

申请号：US18496126

申请日：2023-10-27

Applicant: The Regents of the University of Michigan

Inventor： Yue QU ,  Xiaheng Huang ,  Stephen R. Forrest

IPC: H10K50/854 ,  B29C41/02 ,  B29L31/34 ,  H10K50/11 ,  H10K71/00 ,  H10K71/80 ,  H10K77/10 ,  H10K101/10 ,  H10K102/00

CPC classification number: H10K50/854 ,  H10K50/11 ,  H10K71/00 ,  H10K71/80 ,  H10K77/111 ,  B29C41/02 ,  B29L2031/3475 ,  H10K71/821 ,  H10K2101/10 ,  H10K2102/311

Abstract: A method of fabricating a light emitting device comprises providing a mold having an unpolished surface with an arithmetic mean roughness Ra in a range from 0.1 μm to 10 μm, depositing a thin polymer film over the surface of the mold, wherein the film has a thickness in a range from 1 μm to 100 μm, positioning a light emitting body onto the thin polymer film, wherein the light emitting body includes an anode, a cathode, and a light emitting layer positioned between the anode and the cathode, and separating the thin polymer film with the light emitting body from the mold. A light emitting device is also described.

公开(公告)号：US12052877B2

公开(公告)日：2024-07-30

申请号：US17038718

申请日：2020-09-30

Applicant: The Regents of the University of Michigan

Inventor： Stephen R. Forrest ,  Yongxi Li

IPC: H10K30/30 ,  H10K71/16 ,  H10K85/20

CPC classification number: H10K30/30 ,  H10K71/164 ,  H10K85/211

Abstract: A method of making a photovoltaic cell comprises the steps of providing a substrate in a vacuum, depositing an anode over the substrate, depositing a first heterojunction layer over the anode layer, depositing a second heterojunction layer over the first heterojunction layer, depositing a cathode over the second heterojunction layer, and releasing the vacuum. A photovoltaic cell is also described.

公开(公告)号：US12048169B2

公开(公告)日：2024-07-23

申请号：US17932577

申请日：2022-09-15

Applicant: The Regents of the University of Michigan

Inventor： Stephen R. Forrest ,  Hafiz K. M. Sheriff, Jr.

IPC: H10K30/87 ,  H10K30/30 ,  H10K30/82

CPC classification number: H10K30/87 ,  H10K30/30 ,  H10K30/82

Abstract: An organic photovoltaic device comprises a first electrode, at least one organic heterojunction layer positioned over the first electrode, a second electrode positioned over the organic heterojunction layer, and a thin film stack positioned over the second electrode, comprising a plurality of sublayers of a first dielectric material alternating with a plurality of sublayers of a second dielectric material, wherein at least one of the plurality of sublayers of the first dielectric material has a thickness that is different from another of the plurality of sublayers of the first dielectric material, wherein the organic photovoltaic device has a mean transmittance of between 10% and 100% for light between 420 nm and 670 nm, with a variance of ±10%, and wherein an index contrast between the sublayers in the thin film stack is at least 0.1. A method of fabricating an organic photovoltaic device is also disclosed.