WO3 nanosheet array film has been a research hotspot in the field of optoelectronic materials in recent years. Therefore, the preparation of highly ordered WO3 nanostructure array film has also attracted much attention. It is reported that common methods for preparing ordered nanostructured array films include hydrothermal methods, template methods, chemical vapor deposition methods, thermal evaporation methods, and so on.
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Among them, the hydrothermal method has the characteristics of mild reaction conditions, simple equipment, low cost and easy preparation of large-area films, so that it has been favored by many researchers. By adopting the FTO conductive glass as the substrate, the experts synthesized the WO3 nanosheet array film directly on the FTO substrate by hydrothermal synthesis and calcination, and study its application in photoelectrochemical cells and dye-sensitized solar cells. Wherein, there is no need to prefabricate the WO3 seed layer. In addition, the experts also studied the effects of different hydrothermal synthesis conditions on the morphology and structure of the WO3 film. The results showed that C2042- has an important structure-oriented effect on the formation of WO3 nanosheet arrays.
