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Study on the photoelectrical performance of anodized titanium sheets
Xiangping Chen1, Xin Li2, Dedong Chen1
1Jewelry Institute, Guangzhou Panyu Polytechnic, Guangzhou 511483, People's Republic of China.
Royal Society Open Science
|May 7, 2021
Summary
This study reveals that anodized titanium sheets exhibit excellent photoelectrical performance. Increasing anodization voltage and duration enhances photocurrents, suggesting potential applications beyond decorative uses.
Area of Science:
- Materials Science
- Electrochemistry
- Photochemistry
Background:
- Anodization is commonly used to create multicoloured titanium oxide films.
- Research has primarily focused on the optical properties of these films, neglecting their photoelectrical characteristics.
Purpose of the Study:
- To investigate the photoelectrical properties of multicoloured anodized titanium sheets.
- To establish the relationship between anodization parameters (voltage, duration) and photocurrent generation.
Main Methods:
- Preparation of multicoloured oxidized titanium sheets via anodization.
- Characterization using UV-vis absorption spectroscopy and photocurrent measurements.
- Analysis of morphology, crystal structure, and anodization currents.
Main Results:
- Anodized titanium sheets demonstrate significant photoelectrical performance.
- Increased anodization voltage led to more UV-vis absorption peaks, indicating enhanced absorption.
- Extended anodization duration shifted the absorption band edge, reducing the band gap for charge transfer.
- Photocurrent increased linearly with both anodization voltage and duration under simulated sunlight.
Conclusions:
- Anodized titanium sheets possess tunable photoelectrical properties dependent on anodization parameters.
- These materials show promise for applications in decorative fields and as photoelectrical catalysts.
