Influence of substrate temperature on properties of sprayed WO3 thin films

Comparison of electrochromic amorphous and crystalline electron beam deposited WO3 thin films

“…This suggests that the crystal structure of WO 3 is sensitive to the deposition or the annealing temperature. Based on tungsten oxide file [JCPDS file and those reported by others [10][11][12][13][14][15], the XRD pattern of the film in Fig. 2e exhibits polycrystallinity that resembles triclinic WO 3 with a preferred orientation along the (2 0 0) direction.…”

“…The crystallization of WO 3 thin films is usually reported to be in the 623-673 K temperature range [5,9]. The presence of a (0 2 0) diffraction peak indicates that the long-range atomic order develops gradually above 623 K. The changes are particularly large between 673 and 723 K [10]. This suggests that the crystal structure of WO 3 is sensitive to the deposition or the annealing temperature.…”

Visible light catalysis of methyl orange using nanostructured WO3 thin films

“…Due to its extended photosensitivity into the visible range, it becomes an interesting candidate as a photocatalyst for photochemical water (and air) purification [11]. The WO 3 films are typically made by different deposition techniques such as sputtering [12], evaporation [13], spray pyrolysis [14], anodization [15] and chemical vapor deposition [16].…”

“…Among these techniques, spray pyrolysis can offer a cost-effective way to obtain uniform and large area coatings [14]. Effective photoelectrocatalytic degradation of naphthol blue black [17,1], remazol black b [6], nitrite ions [18], 2, 4-dichlorophenol [19], methyl blue [20] and basic red 51 [21] have been achieved.…”

Tailoring WO3 thin layers using spray pyrolysis technique

“…1 Introduction The WO 3 films are typically made by evaporation [1], sputtering [2], chemical vapour deposition [3,4], spray deposition [5], anodization [6] and sol-gel [7,8].…”