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

Yoder, Mikayla A.; Potter, Marjorie M.; Petronico, Aaron; Lehman, Sean E.; Nuzzo, Ralph G.

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

Patent · Tue Nov 08 00:00:00 EST 2022

OSTI ID:1986786

Yoder, Mikayla A.; Potter, Marjorie M.; Petronico, Aaron; Lehman, Sean E.; Nuzzo, Ralph G.

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.

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Research Organization:: University of Illinois, Urbana-Champaign, IL (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: SC0001293; SC0019140

Assignee:: The Board of Trustees of the University of Illinois (Urbana, IL)

Patent Number(s):: 11,493,818

Application Number:: 17/064,238

OSTI ID:: 1986786

Resource Relation:: Patent File Date: 10/06/2020

Country of Publication:: United States

Language:: English

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