Nano yellow tungsten oxide may be applied for producing heat insulating window glass so that this kind of window glass will have lots of advantages such as high thermal insulation, sun protection, anti-glare, anti-explosion and long service life. Also, it may reduce energy consumption and create a private space.
The reason why yellow tungsten oxide may play an important role in thermal insulation is mainly due to its own photochromic properties. In other words, it may make window glass appear photochromic phenomenon. So, what is photochromism?
The photochromism refers to the process that compound A undergoes a specific chemical reaction to generate B with different structure and spectral properties when it is irradiated with light (having a wavelength of λ1). However, under the irradiation of light (having another wavelength of λ2) or under the action of heat, B reversibly produces compound A. The basic characteristics of this process are: A and B can be stable under certain conditions, and the color parallax is significantly different; the mutual change between A and B is reversible.
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