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Published on: March 29, 2019
One-dimensional Bi(2)O(3) nanohooks: synthesis, characterization and optical properties
Latha Kumari1, Jin-Han Lin, Yuan-Ron Ma
1Department of Physics, National Dong Hwa University, Hualien 974, Taiwan, Republic of China.
Summary
Researchers synthesized one-dimensional bismuth(III) oxide (Bi(2)O(3)) nanohooks using a novel deposition technique. These nanostructures exhibit unique optical properties, potentially useful for optoelectronic applications.
Area of Science:
- Materials Science
- Nanotechnology
- Solid State Chemistry
Background:
- Bismuth(III) oxide (Bi(2)O(3)) is a promising material with diverse applications.
- Controlling the morphology and structure of Bi(2)O(3) is crucial for optimizing its properties.
- One-dimensional nanostructures offer unique advantages in material performance.
Purpose of the Study:
- To synthesize one-dimensional (1D) Bi(2)O(3) nanohooks.
- To characterize the structural, morphological, and optical properties of the synthesized nanohooks.
- To investigate the relationship between structure and photoluminescence.
Main Methods:
- Oxidative metal vapor phase deposition technique for nanohook synthesis.
- Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) for morphology and structure analysis.
- X-ray Diffraction (XRD) for phase and crystal structure identification.
- Raman scattering for phonon vibration analysis.
- Photoluminescence (PL) spectroscopy for optical property evaluation.
Main Results:
- Successful synthesis of 1D Bi(2)O(3) nanohooks with nanoparticles at their tips.
- Confirmation of crystalline structure and elemental composition (Bi and O) using XRD and TEM.
- Identification of two phases: α-Bi(2)O(3) (monoclinic) and β-Bi(2)O(3) (tetragonal).
- Observation of broadband visible photoluminescence (500-900 nm), extending into the near-infrared region.
- Attribution of visible emission to oxygen vacancies and defect states.
Conclusions:
- The oxidative metal vapor phase deposition technique is effective for producing 1D Bi(2)O(3) nanohooks.
- The synthesized nanohooks possess distinct structural and optical characteristics.
- Oxygen vacancies play a significant role in the observed broadband photoluminescence, suggesting potential for optoelectronic device applications.
