公开(公告)号：US11825687B2

公开(公告)日：2023-11-21

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: H10K50/852 ,  C09K11/06 ,  H10K50/11 ,  H10K85/30 ,  H10K101/10 ,  H10K50/13 ,  H10K50/854 ,  H10K59/32 ,  H10K101/30 ,  H10K102/00 ,  H10K59/90

CPC classification number: H10K50/852 ,  C09K11/06 ,  H10K50/11 ,  H10K85/371 ,  C09K2211/1029 ,  C09K2211/1044 ,  C09K2211/188 ,  H10K50/13 ,  H10K50/854 ,  H10K59/32 ,  H10K59/90 ,  H10K2101/10 ,  H10K2101/30 ,  H10K2102/00 ,  H10K2102/351

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：US20220271250A1

公开(公告)日：2022-08-25

申请号：US17585384

申请日：2022-01-26

Applicant: The Regents of the University of Michigan

Inventor： Byungjun Lee ,  Jongchan Kim ,  Stephen R. Forrest

IPC: H01L51/50 ,  H01L51/56 ,  H01L51/52

Abstract: An organic electronic optoelectronic device comprises a substrate, a first electrode positioned over the substrate, a first organic buffer layer positioned over the first electrode, and a first inorganic emissive layer positioned over the first organic buffer layer. A method of fabricating an organic optoelectronic device is also disclosed.

公开(公告)号：US11329241B2

公开(公告)日：2022-05-10

申请号：US14912756

申请日：2014-08-29

Applicant: The Regents of the University of Michigan

Inventor： Stephen R. Forrest ,  Byeongseop Song ,  Jeramy D. Zimmerman

IPC: H01L51/42 ,  H01L51/44 ,  H01L51/00

Abstract: Disclosed herein are exciton-blocking treatments for buffer layers used in organic photosensitive optoelectronic devices. More specifically, the organic photosensitive optoelectronic devices described herein include at least one self-assembled monolayer disposed on the surface of an anode buffer layer. Methods of preparing these devices are also disclosed. The present disclosure further relates to methods of forming at least one self-assembled monolayer on a substrate.

公开(公告)号：US11145834B2

公开(公告)日：2021-10-12

申请号：US15111249

申请日：2015-01-15

Applicant: The Regents of the University of Michigan

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

IPC: H01L51/42 ,  H01L51/00 ,  H01G9/20

Abstract: High efficiency multi-junction small-molecule organic photovoltaic devices and methods of fabricating the same are disclosed herein. Design considerations for improving spectral coverage and light-harvesting efficiency using the multi-junction devices are also disclosed.

公开(公告)号：US11088338B2

公开(公告)日：2021-08-10

申请号：US16126277

申请日：2018-09-10

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

Inventor： Stephen R. Forrest ,  Mark E. Thompson

IPC: H01L51/42 ,  H01L31/0232 ,  H01L31/055 ,  H01L51/00

Abstract: The present disclosure relates to a photosensitive optoelectronic device comprising two electrodes, an inorganic subcell positioned between the two electrodes, wherein the inorganic subcell comprises at least one inorganic semiconductor material having a band gap energy (EG), and an organic sensitizing window layer disposed on the inorganic subcell. In one aspect, the organic sensitizing window layer comprises a singlet fission material. In another aspect, the organic sensitizing window layer comprises a singlet fission host and a phosphorescent emitter dopant, where the singlet fission host exhibits an excitation triplet energy (ET-SF) greater than or equal to an excitation triplet energy (ET-PE) exhibited by the phosphorescent emitter dopant.

公开(公告)号：US11087974B2

公开(公告)日：2021-08-10

申请号：US16595552

申请日：2019-10-08

Applicant: The Regents of The University of Michigan

Inventor： Stephen R. Forrest ,  Kyusang Lee

IPC: H01L21/02 ,  H01L21/324 ,  H01L21/78 ,  H01L21/67

Abstract: A method is presented for fabricating a substrate comprised of a compound semiconductor. The method includes: growing a sacrificial layer onto a parent substrate; growing an epitaxial template layer on the sacrificial layer; removing the template layer from the parent substrate using an epitaxial lift-off procedure; and bonding the removed template layer to a host substrate using Van der Waals forces and thereby forming a compound semiconductor substrate.

公开(公告)号：US10964732B2

公开(公告)日：2021-03-30

申请号：US16703562

申请日：2019-12-04

Applicant: The Regents of the University of Michigan

Inventor： Stephen R. Forrest ,  Kyusang Lee

IPC: H01L27/12 ,  H01L21/02 ,  H01L21/78 ,  H01L33/00 ,  H01L21/306 ,  H01L29/66

Abstract: Thin-film electronic devices such as LED devices and field effect transistor devices are fabricated using a non-destructive epitaxial lift-off technique that allows indefinite reuse of a growth substrate. The method includes providing an epitaxial protective layer on the growth substrate and a sacrificial release layer between the protective layer and an active device layer. After the device layer is released from the growth substrate, the protective layer is selectively etched to provide a newly exposed surface suitable for epitaxial growth of another device layer. The entire thickness of the growth substrate is preserved, enabling continued reuse. Inorganic thin-film device layers can be transferred to a flexible secondary substrate, enabling formation of curved inorganic optoelectronic devices.

公开(公告)号：US10941481B2

公开(公告)日：2021-03-09

申请号：US16683389

申请日：2019-11-14

Applicant: The Regents of the University of Michigan

Inventor： Stephen R. Forrest ,  Gregory McGraw

IPC: C23C14/10 ,  C23C14/12 ,  C23C14/04 ,  C23C14/22 ,  B41J2/005

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.

公开(公告)号：US20210057661A1

公开(公告)日：2021-02-25

申请号：US16963082

申请日：2019-01-17

Applicant: The Regents of the University of Michigan

Inventor： Stephen R. Forrest ,  Xiaozhou Che ,  Yongxi Li

IPC: H01L51/42

Abstract: Organic photovoltaic cells (OPVs) and their compositions are described herein. In one or more embodiments, the OPV or solar cell includes an anode; a cathode; a first active layer positioned between the anode and the cathode, the first active layer configured to absorb light in a first wavelength spectrum; a second active layer positioned between the anode and the cathode, the second active layer configured to absorb light in a second wavelength spectrum; and a recombination zone positioned between the first active layer and the second active layer.

公开(公告)号：US20210020697A1

公开(公告)日：2021-01-21

申请号：US16931960

申请日：2020-07-17

Applicant: The Regents of the University of Michigan

Inventor： Stephen R. Forrest ,  Xiaozhou Che ,  Yongxi Li

IPC: H01L27/30 ,  H01L51/44

Abstract: An organic optoelectronic device comprises a first electrode, a first infrared photovoltaic subcell positioned over the first electrode, a second infrared photovoltaic subcell positioned over the first near-infrared subcell, and a first visible photovoltaic subcell positioned over the second near-infrared subcell, a second electrode positioned between the second near-infrared photovoltaic subcell and the first visible photovoltaic subcell, and a third electrode positioned over the first visible photovoltaic subcell, wherein the first electrode and the third electrode are held at the same potential relative to the second electrode.