Nano- and micro-structural control of WO₃ photoelectrode films through aqueous synthesis of WO₃·H₂O and (NH₄)_0.33WO₃ precursors.

ABSTRACT: Nano- and micro-structured tungsten trioxide (WO₃) photoelectrode films were prepared through an aqueous solution route. WO₃ precursor layers were deposited on glass substrates through heterogeneous nucleation from (NH₄)₁₀W₁₂O₄₁ aqueous solutions at 50-60 °C. The crystal phase of the precursors changed from WO₃·H₂O to (NH₄)_0.33WO₃ with increasing (NH₄)₁₀W₁₂O₄₁ concentration (x), which involved a morphological change from micron-scale plates to nano-scale fine particles. The WO₃·H₂O and (NH₄)_0.33WO₃ layers were thermally converted to the monoclinic WO₃ phas

SUBMITTER: Uchiyama H 

PROVIDER: S-EPMC9050517 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature