Fig. 2. Photographs (left) and corresponding SEM images (right) of the (A) WO3, (B) WO3/Ag NN, (C) WO3/Ag NN/PEDOT:PSS and (D) WO3/Ag NN/PEDOT:PSS/WO3 films. (E) Corresponding EDS element mappings of the WO3/Ag NN/PEDOT:PSS/WO3 hybrid film.
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