Share Email Print

Proceedings Paper

Amorphous Tungsten Oxide Electrochromic Coatings for Solar Windows
Author(s): D. K. Benson; C. E. Tracy
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Multilayer, solid-state electrochromic coatings based on "amorphous" tungsten oxide (a-W03) are being evaluated for control of solar gain through windows. This paper summarizes recent progress at SERI in this effort. A typical electrochromic coating consists of indium-tin oxide (520 nm), a-W03 (410 nm), MgF, (170 nm) and gold (15 nm) all applied by vacuum deposition. Transmission electron diffraction of the a-WO3 shows a very fine structure with short range order and an ill-defined grain structure on the order of 8 nm diameter. Optical measurements show two electrochromically active absorption bands in the coating, at least one of which can be attributed to small polaron absorption quite similar to that observed in crystalline WO3 at low temperatures. Methods were developed for depositing electrochromic a-W03 by plasma enhanced, chemical vapor deposition. Apparatus for testing the cyclic durability of solid state electrochromic coatings has been designed and constructed.

Paper Details

Date Published: 2 December 1985
PDF: 7 pages
Proc. SPIE 0562, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion IV, (2 December 1985); doi: 10.1117/12.966287
Show Author Affiliations
D. K. Benson, Solar Energy Research Institute (United States)
C. E. Tracy, Solar Energy Research Institute (United States)

Published in SPIE Proceedings Vol. 0562:
Optical Materials Technology for Energy Efficiency and Solar Energy Conversion IV
Carl M. Lampert, Editor(s)

© SPIE. Terms of Use
Back to Top