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  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1996),
  • paper CWF44

Bleaching effect in nanosized chromogenic WO3 under picosecond excitation

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Abstract

Certain compounds of polyvalent metals exhibit coloration, which depends on the oxidation state of their cations. The best known "chromogenic" materials are tungsten trioxide WO3 forming deep blue alkali and hydrogen tungsten bronzes MxWO3 on reduction. Thin-layer systems whose transmittance or reflectance can be varied reversibly and continuously by an electric voltage or by other methods are of great interest for many applications. However, a large-scale progress of such devices has not yet been achieved.

© 1996 Optical Society of America

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