Influence of near-surface region on electrochromic properties of sodium tungsten bronze crystals

Igor A. Ges; Galina V. Kuzmitch; Igor M. Romanov

doi:10.1117/12.266836

6 February 1997 Influence of near-surface region on electrochromic properties of sodium tungsten bronze crystals

Igor A. Ges, Galina V. Kuzmitch, Igor M. Romanov

Proceedings Volume 2968, Optical Organic and Semiconductor Inorganic Materials; (1997) https://doi.org/10.1117/12.266836
Event: International Conference on Advanced Optical Materials and Devices, 1996, Riga, Latvia

Abstract

This paper deals with the influence of near-surface region on electrochromic properties of sodium tungsten bronze (STB) crystals. The surface element analysis of STB was carried out by SIMS and ESCA methods. Effects of anodic polarization and electrochromic coloration-bleaching on the near-surface of crystals were investigated. It was found that anodic polarization resulted to extraction of sodium from near- surface region. This process is responsible for the appearance of uninterrupted channels which are permeable to hydrogen ions. Their mobility defines sensitivity of electrochromic structure based on STB crystal. Mechanisms of anodic polarization and electrochromic bleaching-coloration of Na_xWO₃ are discussed.

Citation Download Citation

Igor A. Ges, Galina V. Kuzmitch, and Igor M. Romanov "Influence of near-surface region on electrochromic properties of sodium tungsten bronze crystals", Proc. SPIE 2968, Optical Organic and Semiconductor Inorganic Materials, (6 February 1997); https://doi.org/10.1117/12.266836

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