University of Illinois

X-celeprint Limited

Semprius, Inc.

Other

University of California

California Institute of Technology

Dow Corning Corporation

Ralph G Nuzzo

John A Rogers

Matthew Alexander Meitl

Etienne Menard

Yugang Sun

Heung Cho Ko

Dahl-Young Khang

Zhengtao Zhu

Keon Jae Lee

Jongseung Yoon

Mark Stoykovich

Michael Motala

Jong-Hyun Ahn

Chang-Jae Yu

Sang-Il Park

Hanqing Jiang

Yonggang Huang

Andrew Evert Carlson

Won Mook Choi

Hoon-sik Kim

Sang Il Park

Eric Brueckner

Rak Hwan Kim

Shawn Mack

Angus A Rockett

Lu Xu

George M Whitesides

Harry A Atwater

Armand Paul Alivisatos

Jennifer Ann Lewis

Younan Xia

Paul Vannest Braun

Milan Mrksich

Paul Gilbert Clem

Anne K Shim

David A Payne

Jong Hyun Ahn

Mikayla A Yoder

William Robert Childs

Nathan H Mack

Colton Bukowsky

Aaron L Petronico

Noo-Li Jeon

Hoon-Sik Kim

Seong Jun Kang

Ognjen Ilic

Heung-Cho Ko

Viktor Malyarchuk

Pierre Wiltzius

David R Needell

Noah Bronstein

Haley Bauser

Junwen He

Sunita Darbe

Zach Nett

Brent Koscher

Osman S Cifci

Sean E Lehman

Eric S Epstein

Jennifer N H Shepherd

Sara T Parker

Robert A Barry, Iii

Robert F Shepherd

Ahn Heejoon

Sang-II Park

Svetlana M Mitrovski

Matthew Stewart

Jimin Yao

Hao Chen

Marjorie M Potter

Provided are optical devices and systems fabricated, at least in part, via printing-based assembly and integration of device components. In specific embodiments the present invention provides light emitting systems, light collecting systems, light sensing systems and photovoltaic systems comprising printable semiconductor elements, including large area, high performance macroelectronic devices. Optical systems of the present invention comprise semiconductor elements assembled, organized and/or integrated with other device components via printing techniques that exhibit performance characteristics and functionality comparable to single crystalline semiconductor based devices fabricated using conventional high temperature processing methods. Optical systems of the present invention have device geometries and configurations, such as form factors, component densities, and component positions, accessed by printing that provide a range of useful device functionalities. Optical systems of the present invention include devices and device arrays exhibiting a range of useful physical and mechanical properties including flexibility, shapeability, conformability and stretchablity.

Optical systems fabricated by printing-based assembly

The invention provides methods and devices for fabricating printable semiconductor elements and assembling printable semiconductor elements onto substrate surfaces. Methods, devices and device components of the present invention are capable of generating a wide range of flexible electronic and optoelectronic devices and arrays of devices on substrates comprising polymeric materials. The present invention also provides stretchable semiconductor structures and stretchable electronic devices capable of good performance in stretched configurations.

Methods and devices for fabricating and assembling printable semiconductor elements

An autonomous light management system for a window includes an electrochromic film stack comprising an electrochromic layer on a first transparent electrode, an ion storage layer on a second transparent electrode, and an electrolyte sandwiched between the ion storage and electrochromic layers. The electrochromic film stack exhibits a transmissive state or an absorptive state depending on charging or discharging of the electrochromic layer. The light management system further comprises an array of power units disposed on a front surface of the electrochromic film stack, where each power unit comprises at least one solar microcell. Collectively, the solar microcells cover an area no greater than about 6% of a total area of the front surface. The array of power units is configured to control the charging and discharging of the electrochromic layer, thereby manipulating light transmission through the electrochromic film stack.

Autonomous light management system for a window and method of controlling light transmission

Luminescent solar concentrators in accordance with various embodiments of the invention can be designed to minimize photon thermalization losses and incomplete light trapping using various components and techniques. Cadmium selenide core, cadmium sulfide shell (CdSe/CdS) quantum dot ('QD') technology can be implemented in such devices to allow for near-unity QDs and sufficiently large Stokes shifts. Many embodiments of the invention include a luminescent solar concentrator that incorporates CdSe/CdS quantum dot luminophores. In further embodiments, anisotropic luminophore emission can be implemented through metasurface/plasmonic antenna coupling. In several embodiments, red-shifted luminophores are implemented. Additionally, top and bottom spectrally-selective filters, such as but not limited to selectively-reflective metasurface mirrors and polymeric stack filters, can be implemented to enhance the photon collection efficiency. In some embodiments, luminescent solar concentrator component is optically connected in tandem with a planar Si subcell, forming a micro-optical tandem luminescent solar concentrator.

Luminescent solar concentrators and related methods of manufacturing

Described herein are printable structures and methods for making, assembling and arranging electronic devices. A number of the methods described herein are useful for assembling electronic devices where one or more device components are embedded in a polymer which is patterned during the embedding process with trenches for electrical interconnects between device components. Some methods described herein are useful for assembling electronic devices by printing methods, such as by dry transfer contact printing methods. Also described herein are GaN light emitting diodes and methods for making and arranging GaN light emitting diodes, for example for display or lighting systems.

Printed assemblies of ultrathin, microscale inorganic light emitting diodes for deformable and semitransparent displays

In an aspect, the present invention provides stretchable, and optionally printable, components such as semiconductors and electronic circuits capable of providing good performance when stretched, compressed, flexed or otherwise deformed, and related methods of making or tuning such stretchable components. Stretchable semiconductors and electronic circuits preferred for some applications are flexible, in addition to being stretchable, and thus are capable of significant elongation, flexing, bending or other deformation along one or more axes. Further, stretchable semiconductors and electronic circuits of the present invention are adapted to a wide range of device configurations to provide fully flexible electronic and optoelectronic devices.

Controlled buckling structures in semiconductor interconnects and nanomembranes for stretchable electronics

An optical microcavity for a high-contrast display comprises an enclosed cavity having a front wall and a back wall, where the front wall comprises a pinhole opening for emission of light from the cavity and the back wall is configured to generate or transmit light into the cavity. An outer surface of the front wall absorbs some or substantially all optical wavelengths of externally incident light so as to appear black or colored. An inner surface of the front wall comprises a light reflectivity of greater than 90% to promote photon recycling within the cavity and light emission through the pinhole opening.

Optical microcavity for a high-contrast display

Growing community of inventors

Champaign, IL, United States of America

Ralph G Nuzzo