Patents by Inventor Brian E. Lassiter

Brian E. Lassiter has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240074218
    Abstract: Disclosed herein are organic photosensitive devices including at least one exciton-blocking charge carrier filter. The filters comprise a mixture of at least one wide energy gap material and at least one electron or hole conducting material. As described herein, the novel filters simultaneously block excitons and conduct the desired charge carrier (electrons or holes).
    Type: Application
    Filed: March 15, 2023
    Publication date: February 29, 2024
    Inventors: Stephen R. Forrest, Xin Xiao, Jeramy D. Zimmerman, Kevin Bergemann, Anurag Panda, Brian E. Lassiter, Mark E. Thompson, Andrew N. Bartynski, Cong Trinh
  • Patent number: 11744138
    Abstract: Disclosed herein are organic photosensitive optoelectronic device comprising a first layer comprising one or more of a first layer material, a second layer comprising one or more of a second layer material, and a third layer comprising one or more of a third layer material. The second layer may be dissolved in a semi-orthogonal solvent. The first layer and the third layer may be very slightly soluble or practically insoluble in the semi-orthogonal solvent.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: August 29, 2023
    Assignee: The Regents of the University of Michigan
    Inventors: Stephen R. Forrest, Brian E. Lassiter, Jeramy D. Zimmerman
  • Patent number: 11211559
    Abstract: There is disclosed ultrathin film material templating layers that force the morphology of subsequently grown electrically active thin films have been found to increase the performance of small molecule organic photovoltaic (OPV) cells. There is disclosed electron-transporting material, such as hexaazatriphenylene-hexacarbonitrile (HAT-CN) can be used as a templating material that forces donor materials, such as copper phthalocyanine (CuPc) to assume a vertical-standing morphology when deposited onto its surface on an electrode, such as an indium tin oxide (ITO) electrode. It has been shown that for a device with HAT-CN as the templating buffer layer, the fill factor and short circuit current of CuPc:C60 OPVs were both improved compared with cells lacking the HAT-CN template. This is explained by the reduction of the series resistance due to the improved crystallinity of CuPc grown onto the ITO surface.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: December 28, 2021
    Assignees: The Regents of the University of Michigan, Industry-Academic Cooperation Foundation Dankook University
    Inventors: Stephen R. Forrest, Brian E. Lassiter, Jun Y. Lee, Kyoung S. Yook, Soon O. Jeon, Byung D. Chin
  • Publication number: 20200286742
    Abstract: Methods of processing substrates are described herein that include depositing a patterned polymer precursor layer by inkjet printing on a substrate comprising a dielectric material, curing the precursor layer to form a patterned polymer layer, and exposing the substrate, with the patterned polymer layer, to a remote plasma etch chemistry selective to the dielectric material. These methods can be performed on display substrates, particularly OLED and/or quantum dot display substrates.
    Type: Application
    Filed: February 13, 2020
    Publication date: September 10, 2020
    Applicant: Kateeva, Inc.
    Inventors: Brian E. Lassiter, Vera Steinmann
  • Patent number: 10533104
    Abstract: Methods for increasing the degree of curing and/or reducing the volatile photoinitiator concentration in cured polymeric film, and particularly in cured polymeric films in a multilayered thin film encapsulation stack are provided. Also provided are highly crosslinked and/or low-outgassing thin polymeric films and encapsulation stacks made using the methods.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: January 14, 2020
    Assignee: Kateeva, Inc.
    Inventors: Brian E. Lassiter, Lorenza Moro, Teresa A. Ramos, Elizabeth Tai, Alonso Serrato, Vera Steinmann
  • Publication number: 20190259971
    Abstract: Disclosed herein are organic photosensitive devices including at least one exciton-blocking charge carrier filter. The filters comprise a mixture of at least one wide energy gap material and at least one electron or hole conducting material. As described herein, the novel filters simultaneously block excitons and conduct the desired charge carrier (electrons or holes).
    Type: Application
    Filed: August 31, 2018
    Publication date: August 22, 2019
    Inventors: Stephen R. Forrest, Xin Xiao, Jeramy D. Zimmerman, Kevin Bergemann, Anurag Panda, Brian E. Lassiter, Mark E. Thompson, Andrew N. Bartynski, Cong Trinh
  • Publication number: 20190136075
    Abstract: Methods for increasing the degree of curing and/or reducing the volatile photoinitiator concentration in cured polymeric film, and particularly in cured polymeric films in a multilayered thin film encapsulation stack are provided. Also provided are highly crosslinked and/or low-outgassing thin polymeric films and encapsulation stacks made using the methods.
    Type: Application
    Filed: July 31, 2018
    Publication date: May 9, 2019
    Applicant: Kateeva, Inc.
    Inventors: Brian E. Lassiter, Lorenza Moro, Teresa A. Ramos, Elizabeth Tai, Alonso Serrato, Vera Steinmann
  • Patent number: 10276817
    Abstract: Disclosed herein are stable organic photosensitive devices including at least one exciton-blocking charge carrier filter. The filters comprise a mixture of at least one wide energy gap material having a sufficiently high glass transition temperature, e.g., higher than the temperature or temperature range at which the device typically operates, higher than a highest operating temperature of the device, higher than a threshold temperature value, etc. and at least one electron or hole conducting material. As described herein, the novel filters simultaneously block excitons and conduct the desired charge carrier (electrons or holes).
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: April 30, 2019
    Assignees: University of Southern California, The Regents of the University of Michigan
    Inventors: Stephen R. Forrest, Quinn Burlingame, Xin Xiao, Kevin Bergemann, Anurag Panda, Jeramy D. Zimmerman, Brian E. Lassiter, Mark E. Thompson, Andrew N. Bartynski, Cong Trinh
  • Patent number: 10141531
    Abstract: Disclosed herein are organic photosensitive optoelectronic devices comprising at least one hybrid planar-graded heterojunction. In particular, organic photosensitive optoelectronic devices are disclosed having two electrodes (110), (150) in superposed relation, a graded heterojunction layer (130) located between the two electrodes, and at least one photoactive layer (120), (140) adjacent to and interfacing with the graded heterojunction layer.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: November 27, 2018
    Assignee: The Regents of the University of Michigan
    Inventors: Stephen R. Forrest, Jeramy D. Zimmerman, Brian E. Lassiter, Xin Xiao
  • Patent number: 10069095
    Abstract: Disclosed herein are organic photosensitive devices including at least one exciton-blocking charge carrier filter. The filters comprise a mixture of at least one wide energy gap material and at least one electron or hole conducting material. As described herein, the novel filters simultaneously block excitons and conduct the desired charge carrier (electrons or holes).
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: September 4, 2018
    Assignees: University of Southern California, The Regents of the University of Michigan
    Inventors: Stephen R. Forrest, Xin Xiao, Jeramy D. Zimmerman, Kevin Bergemann, Anurag Panda, Brian E. Lassiter, Mark E. Thompson, Andrew N. Bartynski, Cong Trinh
  • Patent number: 9847487
    Abstract: Disclosed herein are methods for fabricating an organic photovoltaic device comprising depositing an amorphous organic layer and a crystalline organic layer over a first electrode, wherein the amorphous organic layer and the crystalline organic layer contact one another at an interface; annealing the amorphous organic layer and the crystalline organic layer for a time sufficient to induce at least partial crystallinity in the amorphous organic layer; and depositing a second electrode over the amorphous organic layer and the crystalline organic layer. In the methods and devices herein, the amorphous organic layer may comprise at least one material that undergoes inverse-quasi epitaxial (IQE) alignment to a material of the crystalline organic layer as a result of the annealing.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: December 19, 2017
    Assignee: The Regents of the University of Michigan
    Inventors: Stephen R. Forrest, Jeramy D. Zimmerman, Brian E Lassiter, Xin Xiao
  • Patent number: 9431621
    Abstract: Doping metal oxide charge transport material with an organic molecule lowers electrical resistance while maintaining transparency and thus is optimal for use as charge transport materials in various organic optoelectronic devices such as organic photovoltaic devices and organic light emitting devices.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: August 30, 2016
    Assignee: The Regents of the University of Michigan
    Inventors: Stephen R. Forrest, Brian E. Lassiter
  • Patent number: 9385348
    Abstract: A method for fabricating an organic light emitting device stack involves depositing a first conductive electrode layer over a substrate; depositing a first set of one or more organic layers, wherein at least one of the first set of organic layers is a first emissive layer and one of the first set of organic layers is deposited by a solution-based process that utilizes a first solvent; depositing a first conductive interlayer by a dry deposition process; and depositing a second set of one or more organic layers, wherein at least one of the second set of organic layers is a second emissive layer and one of the second set of organic layers is deposited by a solution-based process that utilizes a second solvent, wherein all layers that precede the layer deposited using the second solvent are insoluble in the second solvent.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: July 5, 2016
    Assignee: The Regents of the University of Michigan
    Inventors: Stephen R. Forrest, Brian E. Lassiter, Jeramy D. Zimmerman
  • Publication number: 20160056398
    Abstract: Disclosed herein are organic photosensitive devices including at least one exciton-blocking charge carrier filter. The filters comprise a mixture of at least one wide energy gap material and at least one electron or hole conducting material. As described herein, the novel filters simultaneously block excitons and conduct the desired charge carrier (electrons or holes).
    Type: Application
    Filed: April 14, 2014
    Publication date: February 25, 2016
    Inventors: Stephen R. Forrest, Xin Xiao, Jeramy D. Zimmerman, Kevin Bergemann, Anurag Panda, Brian E. Lassiter, Mark E. Thompson, Andrew N. Bartynski, Cong Trinh
  • Publication number: 20160020418
    Abstract: Disclosed herein are stable organic photosensitive devices including at least one exciton-blocking charge carrier filter. The filters comprise a mixture of at least one wide energy gap material having a sufficiently high glass transition temperature, e.g., higher than the temperature or temperature range at which the device typically operates, higher than a highest operating temperature of the device, higher than a threshold temperature value, etc. and at least one electron or hole conducting material. As described herein, the novel filters simultaneously block excitons and conduct the desired charge carrier (electrons or holes).
    Type: Application
    Filed: July 20, 2015
    Publication date: January 21, 2016
    Inventors: Stephen R. Forrest, Quinn Burlingame, Xin Xiao, Kevie Bergemann, Anurag Panda, Jeramy D. Zimmerman, Brian E. Lassiter, Mark E. Thompson, Andrew N. Bartynski, Cong Trinh
  • Publication number: 20150340634
    Abstract: Disclosed herein are organic photosensitive optoelectronic devices comprising at least one hybrid planar-graded heterojunction. In particular, organic photosensitive optoelectronic devices are disclosed having two electrodes (110), (150) in superposed relation, a graded heterojunction layer (130) located between the two electrodes, and at least one photoactive layer (120), (140) adjacent to and interfacing with the graded heterojunction layer.
    Type: Application
    Filed: November 27, 2013
    Publication date: November 26, 2015
    Applicant: The Regents of the University of Michigan
    Inventors: Stephen R. Forrest, Jeramy D. Zimmerman, Brian E. Lassiter, Xin Xiao
  • Publication number: 20150318505
    Abstract: Disclosed herein are methods for fabricating an organic photovoltaic device comprising depositing an amorphous organic layer and a crystalline organic layer over a first electrode, wherein the amorphous organic layer and the crystalline organic layer contact one another at an interface; annealing the amorphous organic layer and the crystalline organic layer for a time sufficient to induce at least partial crystallinity in the amorphous organic layer; and depositing a second electrode over the amorphous organic layer and the crystalline organic layer. In the methods and devices herein, the amorphous organic layer may comprise at least one material that undergoes inverse-quasi epitaxial (IQE) alignment to a material of the crystalline organic layer as a result of the annealing.
    Type: Application
    Filed: November 22, 2013
    Publication date: November 5, 2015
    Applicant: The Regents of the University of Michigan
    Inventors: Stephen R. Forrest, Jeramy D. Zimmerman, Brian E. Lassiter, Xin Xiao
  • Patent number: 9099652
    Abstract: A method of fabricating a tandem organic photosensitive device involves depositing a first layer of an organic electron donor type material film by solution-processing of the organic electron donor type material dissolved in a first solvent; depositing a first layer of an organic electron acceptor type material over the first layer of the organic electron donor type material film by a dry deposition process; depositing a conductive layer over the interim stack by a dry deposition process; depositing a second layer of the organic electron donor type material over the conductive layer by solution-processing of the organic electron donor type material dissolved in a second solvent, wherein the organic electron acceptor type material and the conductive layer are insoluble in the second solvent; depositing a second layer of an organic electron acceptor type material over the second layer of the organic electron donor type material film by a dry deposition process, resulting in a stack.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: August 4, 2015
    Assignee: The Regents of the University of Michigan
    Inventors: Stephen R. Forrest, Brian E. Lassiter, Jeramy D. Zimmerman
  • Patent number: 8816332
    Abstract: The present disclosure relates to photosensitive optoelectronic devices including a compound blocking layer located between an acceptor material and a cathode, the compound blocking layer including: at least one electron conducting material, and at least one wide-gap electron conducting exciton blocking layer. For example, 3,4,9,10 perylenetetracarboxylic bisbenzimidazole (PTCBI) and 1,4,5,8-napthalene-tetracarboxylic-dianhydride (NTCDA) function as electron conducting and exciton blocking layers when interposed between the acceptor layer and cathode. Both materials serve as efficient electron conductors, leading to a fill factor as high as 0.70. By using an NTCDA/PTCBI compound blocking layer structure increased power conversion efficiency is achieved, compared to an analogous device using a conventional blocking layers shown to conduct electrons via damage-induced midgap states.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: August 26, 2014
    Assignee: The Regents of the University of Michigan
    Inventors: Stephen R. Forrest, Brian E. Lassiter
  • Publication number: 20130240840
    Abstract: Doping metal oxide charge transport material with an organic molecule lowers electrical resistance while maintaining transparency and thus is optimal for use as charge transport materials in various organic optoelectronic devices such as organic photovoltaic devices and organic light emitting devices.
    Type: Application
    Filed: March 13, 2012
    Publication date: September 19, 2013
    Applicant: The Regents of the University of Michigan
    Inventors: Stephen R. Forrest, Brian E. Lassiter