Ti-doped WO3 can be prepared by co-sputtering method. Some experts have used this method to prepare the Ti-doped tungsten trioxide film. They found that by changing the reaction conditions, such as increasing the pressure in the oxygen chamber, the experimental results are as follows:

Ce doped tungsten oxide can be prepared by solid phase sintering method, which has the advantages of simple process and low cost. So what is solid phase sintering method? How to synthesize tungsten oxide or doped tungsten oxide by solid phase sintering method?

Co doped tungsten oxide can be synthesized by hydrothermal method, which has the advantages of uniform particle size, high purity and good crystallinity. Some experts add CTAB (cetyltrimethylammonium bromide) to Na2WO4 solution and Co(NO3)2 solution to obtain tungstic acid precipitation and cobalt acid precipitation, and transferred the precipitate to the reactor for hydrothermal reaction for 12h to obtain Co-doped nano tungsten trioxide powder.

Pt doped tungsten oxide can be synthesized by sol-gel method, which has the advantages of simple process, low equipment cost, controllable reaction process, and convenient production of thin film materials on a large scale. Some experts have adopted the sol-gel method to synthesize Pt-doped WO3 film. The process is as follows: