High-purity high density tungsten trioxide is a raw material used to prepare tungsten trioxide target with high purity and high density. The WO3 target is a common used evaporation material for preparing electrochromic tungsten trioxide film by electron beam evaporation method.
Tungsten trioxide thin film is an important dingal material with excellent electrochromic property that has a wide application in electrochromic systems such as smart window. With the promotion of smart window, high-purity high density WO3 will also has a wider application.
It is an optimization to choose tungsten trioxide target as evaporation material although tungsten trioxide powder is often used currently. Usually, it is not suitable to use WO3 powder. However, there are few reports on the preparation of WO3 target at home and abroad. Tungsten trioxide powder with low density and low purity cannot meet the requirement for preparing WO3 target. Therefore, it is of great significance to prepare high purity high density tungsten trioxide target.
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