Journal
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
Volume 115, Issue 4, Pages 1429-1438Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00339-013-8059-7
Keywords
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Funding
- Center for Nanoscience and Nanotechnology at NSYSU
- National Science Council, Taiwan, ROC
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Monoclinic H-type NbO powders subjected to Q-switched laser pulses in water were characterized by X-ray/electron diffraction and optical spectroscopy to have a significant optical property change with accompanied transformation into orthorhombic T-, pseudohexagonal TT-type and an amorphous phase. The T-NbO nanoparticles were (100), (010), (001) and (01) faceted and commonly in oriented intergrowth with TT-type or amorphized domains retaining the polymerized block units of the relic H-type. Such multiple-phase nanoparticles were hydrogenated and densified to modify Raman and FTIR bands and to show visible absorptions corresponding to a broad minimum band gap of 2.3-2.8 eV for potential opto-catalytic and electrochromic applications.
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