公开(公告)号：US20220013672A1

公开(公告)日：2022-01-13

申请号：US17484342

申请日：2021-09-24

Applicant: The Regents of the University of Michigan

Inventor： Stephen R. Forrest ,  Christopher Kyle Renshaw ,  Michael Slootsky

IPC: H01L31/0232 ,  H01L31/0687 ,  H01L31/18 ,  H01L31/0304 ,  H01L31/0693 ,  H01L31/0392 ,  H01L31/0445

Abstract: There is disclosed ultrahigh-efficiency single- and multi-junction thin-film solar cells. This disclosure is also directed to a substrate-damage-free epitaxial lift-off (“ELO”) process that employs adhesive-free, reliable and lightweight cold-weld bonding to a substrate, such as bonding to plastic or metal foils shaped into compound parabolic metal foil concentrators. By combining low-cost solar cell production and ultrahigh-efficiency of solar intensity-concentrated thin-film solar cells on foil substrates shaped into an integrated collector, as described herein, both lower cost of the module as well as significant cost reductions in the infrastructure is achieved.

公开(公告)号：US20210050531A1

公开(公告)日：2021-02-18

申请号：US16943906

申请日：2020-07-30

Applicant: The Regents of the University of Michigan

Inventor： Stephen R. Forrest ,  Jongchan Kim

IPC: H01L51/00 ,  H01L51/42

Abstract: An organic light emitting device (OLED) comprises an anode; a cathode; and a light emitting layer, disposed between the anode and the cathode; wherein the light emitting layer comprises at least one luminescent compound; and wherein the transition dipole moment of the at least one luminescent compound is oriented parallel to the surface of the light emitting layer. A method of fabricating a light emitting layer, comprises the steps of providing a substrate; depositing less than 2 nm of a template material on the substrate; and depositing a composition comprising at least one light emitting compound on the template material.

公开(公告)号：US20210020867A1

公开(公告)日：2021-01-21

申请号：US16925777

申请日：2020-07-10

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

Inventor： Stephen R. Forrest ,  Yue Qu ,  Haonan Zhao ,  Mark E. Thompson

IPC: H01L51/52 ,  H01L51/50 ,  C09K11/06 ,  H01L51/00

Abstract: An OLED device comprises a substrate, a first electrode positioned over the substrate, a second electrode positioned over the first electrode, at least one emissive layer positioned between the first and second electrodes in a first region of the OLED device, and a multilayer dielectric reflector stack, comprising a plurality of dielectric reflector layers positioned between the substrate and the first electrode, wherein the multilayer dielectric reflector stack is configured to form an optical cavity with the emissive layer having a Purcell Factor of at least 3.

公开(公告)号：US10770673B2

公开(公告)日：2020-09-08

申请号：US16200895

申请日：2018-11-27

Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN

Inventor： Stephen R. Forrest ,  Caleb Coburn ,  Changyeong Jeong

IPC: H01L51/50 ,  H01L51/52

Abstract: An organic light emitting device (OLED) is provided that includes a cathode and an anode; a blue emitting layer; and at least two hybrid red/green emitting layers. One of the at least two hybrid red/green emitting layers is a cathode side, red/green emitting layer that is disposed between the cathode and the blue emitting layer. The second of the at least two hybrid red/green emitting layers is an anode side, red/green emitting layer that is disposed between the blue emitting layer and the anode. The OLED emits white light.

公开(公告)号：US10770670B2

公开(公告)日：2020-09-08

申请号：US15332062

申请日：2016-10-24

Applicant: The Regents of the University of Michigan

Inventor： Stephen R. Forrest ,  Rhonda F. Bailey-Salzman

IPC: H01L51/42 ,  H01L21/228 ,  H01L21/22 ,  H01L27/30 ,  H01L51/00 ,  H01L51/44

Abstract: The present disclosure relates to organic photosensitive optoelectronic devices grown in an inverted manner. An inverted organic photosensitive optoelectronic device of the present disclosure comprises a reflective electrode, an organic donor-acceptor heterojunction over the reflective electrode, and a transparent electrode on top of the donor-acceptor heterojunction.

公开(公告)号：US10483477B2

公开(公告)日：2019-11-19

申请号：US15901913

申请日：2018-02-22

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

Inventor： Stephen R. Forrest ,  Michael Slootsky ,  Mark E. Thompson

IPC: H01L51/50 ,  C09K11/06

Abstract: Arrangements and techniques for providing organic emissive layers are provided, in which the emissive layer includes a first dopant having a dissociative energy level. A second dopant in the emissive layer provides a solid state sink energy level, to which doubly excited excitons and/or polarons may transition instead of to the dissociative energy level, thereby decreasing the undesirable effects of transitions to the dissociative energy level.

公开(公告)号：US10424612B2

公开(公告)日：2019-09-24

申请号：US15180537

申请日：2016-06-13

Applicant: The Regents of the University of Michigan

Inventor： Stephen R. Forrest ,  Xin Xu ,  Christopher Kyle Renshaw

IPC: H01L27/146 ,  H01L51/00 ,  H01L27/30 ,  H01L27/32 ,  H05K13/04

Abstract: A method of forming a semiconductor device includes the steps of providing a first circuit layer including a plurality of first contacts, providing one or more semiconductor devices disposed on a stamp, the one or more semiconductor devices including a plurality of second contacts, bonding the plurality of second contacts to the plurality of first contacts via a pressure applied by the stamp.

公开(公告)号：US10032812B2

公开(公告)日：2018-07-24

申请号：US15399865

申请日：2017-01-06

Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN

Inventor： Stephen R. Forrest ,  Kyusang Lee

IPC: H01L21/00 ,  H01L27/146 ,  H01L31/18 ,  H01L31/0392

Abstract: A method is presented for fabricating an array of sensors on an object having a non-developable surface. The method includes: growing an epitaxial structure on a substrate; bonding, without the use of an adhesive, the epitaxial structure to a flexible membrane to form a device structure; forming an array of sensors from the epitaxial structure of the device structure using photolithographic techniques; cutting the device structure into segments; and bonding the segments onto the target object.

公开(公告)号：US20170005284A1

公开(公告)日：2017-01-05

申请号：US15125690

申请日：2015-04-06

Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN

Inventor： Xiaozhou Che ,  Xin Xiao ,  Stephen R. Forrest

IPC: H01L51/42

CPC classification number: H01L51/4246 ,  H01L51/0046 ,  H01L51/0054 ,  H01L51/0056 ,  H01L51/0059 ,  H01L51/0068 ,  H01L51/0069 ,  H01L51/0072 ,  H01L51/422 ,  Y02E10/549 ,  Y02P70/521

Abstract: A highly efficient multi junction photovoltaic device, such as a two, three, or four junction device, is disclosed. The multi-junction device may include a first subcell comprising a first photoactive region and a second subcell comprising a second photoactive region. The first and second photoactive regions are designed to minimize spectral overlap and maximize photocurrent across a broad absorption spectra, such as wavelengths ranging from 400 nm to 900 nm. The device may further include an inter-connecting layer, disposed between the first subcell and the second subcell, that is at least substantially transparent. By introducing a transparent interconnecting layer, a dual element (tandem) cell achieves a power conversion efficiency of 10.0±0.5%. By adding an additional (3rd) sub-cell that absorbs at the second order optical interference maximum within the stack. The triple junction cell significantly improves the quantum efficiency at shorter wavelengths, achieving a power conversion efficiency of 11.1±0.5%. Adding additional sub-cells has been shown to increase power conversion efficiency above 12%.

Abstract translation: 公开了一种高效率的多结光伏器件，例如两个，三个或四个接合器件。 多结器件可以包括包括第一光活性区域的第一子电池和包括第二光活性区域的第二子电池。 第一和第二光活性区域被设计成使光谱重叠最小化并且在宽吸收光谱（例如400nm至900nm的波长）之间最大化光电流。 设备还可以包括设置在第一子电池和第二子电池之间的至少基本透明的连接层。 通过引入透明互连层，双元件（串联）单元实现10.0±0.5％的功率转换效率。 通过添加在堆叠内吸收二阶光学干涉最大值的附加（第三）子单元。 三结电池在较短波长下显着提高了量子效率，实现了11.1±0.5％的功率转换效率。 已经显示添加附加子单元可以提高12％以上的功率转换效率。

公开(公告)号：US20160285410A1

公开(公告)日：2016-09-29

申请号：US15034299

申请日：2014-11-28

Applicant: The Regents of the University of Michigan

Inventor： Stephen R. Forrest ,  Kyusang Lee ,  Matthew Shlian ,  Chih-Wei Chien ,  Peicheng Ku ,  Aaron Lamoreux ,  Max Shtein

IPC: H02S20/32 ,  H01L31/18 ,  H01L31/054 ,  H02S30/20 ,  H01L31/0304

CPC classification number: H02S20/32 ,  H01L31/03046 ,  H01L31/054 ,  H01L31/1844 ,  H02S30/20 ,  Y02E10/52

Abstract: There is disclosed Kirigami-inspired structures for use in solar tracking applications. When coupled with thin-film active materials, the disclosed microstructures can track solar position and maximize solar power generation. In one embodiment, there is disclosed a photovoltaic system comprising a single-axis, or multi-axis solar tracking structure comprising a support structure made of a flexible material having a defined unit cell structure, and a flexible photovoltaic cell disposed on the support structure. There is also disclosed methods of making such structures in which the photovoltaic cell is mounted to the support structure by a direct-attachment bonding processes such as cold-welding.

Abstract translation: 公开了用于太阳能跟踪应用的基里基灵启发式结构。 当与薄膜活性材料结合时，所公开的微结构可以跟踪太阳位置并最大化太阳能发电。 在一个实施例中，公开了一种光伏系统，其包括单轴或多轴太阳能跟踪结构，其包括由具有限定的单元结构的柔性材料制成的支撑结构以及设置在支撑结构上的柔性光伏电池。 还公开了通过诸如冷焊等直接附着接合方法制造这种结构的方法，其中光伏电池被安装到支撑结构上。