Performance problems of electrochromic coatings

Andrejs R. Lusis; Janis Kleperis; Evalds Pentjuss

doi:10.1117/12.517022

8 August 2003 Performance problems of electrochromic coatings

Andrejs R. Lusis, Janis Kleperis, Evalds Pentjuss

Proceedings Volume 5123, Advanced Optical Devices, Technologies, and Medical Applications; (2003) https://doi.org/10.1117/12.517022
Event: 2003 Chapter books, 2003, Bellingham, WA, United States

Abstract

The performance is actual problem of electrochromic coatings. The service and shelf life and cycling capacity are main performance characteristics. By solid-state ionics point of view any electrochromic cell based on phenomena with ion insertion - extraction processes is functioning as solid-state rechargeable battery. The main performance characteristics of electrochromic cells are similar. Performance of electrochromic coatings based on amorphous WO₃ films and protons conducting electrolytes is limited by reversibility of ion insertion-extraction reactions, which causes degradation of cell components. The migration of water in the cell and hydration together with ion insertion-extraction reactions of the WO₃ film have main role in formation of new phases, which determine the value of cycling capacity. The cycling capacity at constnat coloration intensity is limited by initial total number of active tungsten ion sites for induced color centers at inner surface of porous WO₃ film. The more probable transformation of phases in hydrated WO₃ films during cycling, which can be related to loss of active tungsten ion sites, is transformation of octrahedral structural units of H_xWO₃nH₂O to tetrahedral H₂WO₄mH₂O.

Citation Download Citation

Andrejs R. Lusis, Janis Kleperis, and Evalds Pentjuss "Performance problems of electrochromic coatings", Proc. SPIE 5123, Advanced Optical Devices, Technologies, and Medical Applications, (8 August 2003); https://doi.org/10.1117/12.517022

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available