Crystallization and phase separation of tungsten oxidebismuth vanadate amorphous film by annealing in air

Chao Li, Haili Song, Yuanyuan Zhang, Lei Miao, Ruijuan Qi, Rong Huang, Chengqiang Cui

研究成果査読

抄録

A WO3-BiVO4 amorphous film grown on the (001) yttria-stabilized zirconia (YSZ) substrate was annealed at 600 oC in air. The microstructures evolution was investigated by X-ray diffraction, scanning electron microscopy and high-resolution transmission electron microscopy. After annealed, the amorphous composite film crystalized into monoclinic BiVO4 and orthorhombic WO3. BiVO4 epitaxially grew on the YSZ, forming the matrix, where part of small irregular WO3 grains were embedded in. Other large-sized sub-stoichiometric WO3-δ (0<δ<3) grains with stacking faults lay on the film surface, which may contribute to the compressed strain of BiVO4 matrix vertically. Compared to the typical vertical heteroepitaxial nanocomposite of WO3-BiVO4 film grown at 600 oC by pulsed laser deposition, in the annealed composite film, the vertical lattice mismatched strain at WO3/BiVO4 interface decreased and lead to the disappearance of metastable hexagonal WO3.

本文言語English
論文番号012102
ジャーナルJournal of Physics: Conference Series
2011
1
DOI
出版ステータスPublished - 2021 9 8
外部発表はい
イベント2021 5th International Conference on Green Composite Materials and Nanotechnology, GCMN 2021 - Nanjing, Virtual, China
継続期間: 2021 7 232021 7 25

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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