Recent Research Related To The Development Of Electrochromic Windows

R. B. Goldner; R. L. Chapman; G. Foley; E. L. Goldner; T. Haas; P. Norton; G. Seward; K. K . Wong

doi:10.1117/12.966285

2 December 1985 Recent Research Related To The Development Of Electrochromic Windows

R. B. Goldner, R. L. Chapman, G. Foley, E. L. Goldner, T. Haas, P. Norton, G. Seward, K. K . Wong

Proceedings Volume 0562, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion IV; (1985) https://doi.org/10.1117/12.966285
Event: 29th Annual Technical Symposium, 1985, San Diego, United States

Abstract

The results of recent research on each of the layers of a solid-state multilayer structure for electrochromic windows are reviewed. This includes a review of the requirements of the multilayer structure for building windows and especially the need to have an electrochemically balanced system. The results indicate that excess free electron scattering in polycrystalline W0₃ films (the electrochromic layer) is not only the source of lower than desired reflectivity modulation, but it is also the major source of higher than desired absorptivity modulation. Research on LiAlF₄ indicatesthat it is a viable candidate for the ionic conducting layer, being a good lithium ion conductor and a good electronic insulator. Finally, we have recently discovered that tin-doped and undoped In ₂0₃ films are mixed conductors, exhibiting lithium ion injection/ extraction. This is significant since such films could possibly serve in the dual capacity of counterelectrode and transparent conductor, thereby reducing the complexity, the technical problems, and the cost of electrochromic window assemblies.

Citation Download Citation

R. B. Goldner, R. L. Chapman, G. Foley, E. L. Goldner, T. Haas, P. Norton, G. Seward, and K. K . Wong "Recent Research Related To The Development Of Electrochromic Windows", Proc. SPIE 0562, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion IV, (2 December 1985); https://doi.org/10.1117/12.966285

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