Self-powered electrochromic coatings

Francois Pichot; Wei Gao; Brian A. Gregg; Suzanne Ferrere; Se-Hee Lee; John N. Bullock; Yueqin Xu; J. Roland Pitts; C. Ed Tracy; Scott K. Morrison; Satyen K. Deb; David K. Benson; Howard M. Branz

doi:10.1117/12.365773

8 October 1999 Self-powered electrochromic coatings

Francois Pichot, Wei Gao, Brian A. Gregg, Suzanne Ferrere, Se-Hee Lee, John N. Bullock, Yueqin Xu, J. Roland Pitts, C. Ed Tracy, Scott K. Morrison, Satyen K. Deb, David K. Benson, Howard M. Branz

Author Affiliations +

Proceedings Volume 3788, Switchable Materials and Flat Panel Displays; (1999) https://doi.org/10.1117/12.365773
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

This paper summarizes efforts at the National Renewable Energy Laboratory to develop self-powered electrochromic window coatings that could be used for economical retrofit to existing building windows. The self-power is provided in either of two ways in separate approaches to the electrochromic (EC) design: by very thin, nearly transparent a-silicon PV cells or by dye-sensitized titania half-cells built into the multi-layer structure of the window coating. The goal of both designs is the ability to incorporate the self-powered EC coating into a laminated flexible polymer film. This film could then be retrofitted to a building window by bonding it to the interior surface and attaching it to local electronic controls that also derive their power from the windows that they control. Laboratory-scale prototype self-powered EC window coatings have been fabricated using both approaches. These are described and the remaining development challenges are discussed.

Citation Download Citation

Francois Pichot, Wei Gao, Brian A. Gregg, Suzanne Ferrere, Se-Hee Lee, John N. Bullock, Yueqin Xu, J. Roland Pitts, C. Ed Tracy, Scott K. Morrison, Satyen K. Deb, David K. Benson, and Howard M. Branz "Self-powered electrochromic coatings", Proc. SPIE 3788, Switchable Materials and Flat Panel Displays, (8 October 1999); https://doi.org/10.1117/12.365773

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