Thin films prepared from tungstate glass matrix

Glass formation and structure of glasses in the WO3–ZnO–Nd2O3–Al2O3 system

“…As it was shown by Barton et al [61] and Ross-Medgaarden and Wachs [52] Eg linearly decreases with an increasing number of bridging W-O-W bonds. The band gap energy values of studied glasses are 3.6-3.7 eV and these values are compatible with the other tungstate glasses and highly disordered tungsten oxide films [66,67]. As it is seen from Fig.…”

Crystallization of monoclinic WO3 in tungstate fluorophosphate glasses

“…Moreover, it is expected that these tungsten oxide clusters should act as nucleating agents in the glass network and promote glass crystallization. Crystallization of WO 3 in amorphous materials was extensively investigated in WO 3 -based amorphous thin films [28][29][30][31][32][33] but controlled precipitation of WO 3 in glasses was never reported. Only a few works report crystallization studies in tellurite or phosphate glasses containing WO 3 [34][35][36] or preparation of nanocrystals containing tungsten in phosphate glasses [37].…”

Structural study of thin films prepared from tungstate glass matrix by Raman and X-ray absorption spectroscopy

“…These properties are very promising for applications in integrated optics if these materials could be miniaturized and obtained in the form of thin films. Such films prepared from WO 3 -based glass precursors were already obtained from electron beam evaporation and present good optical quality and resistance against atmospheric moisture [17].…”