Electrochemical fabrication and optical properties of porous tin oxide films with structural colors
- Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, 83 Tat Chee Av. Hong Kong (Hong Kong)
- Department of Materials Science and Engineering, South University of Science and Technology of China, Shenzhen, Guangdong 518055 (China)
- Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Kowloon (Hong Kong)
Photonic crystals with porous features not only provide the capability to control light but also enable structural colors that are environmentally sensitive. Here, we report a novel kind of tin oxide-based photonic crystal featuring periodically arranged air pores fabricated by the periodic anodization of tin foil. The existence of a photonic band gap in the fabricated structure is verified by its vivid color, and its reflective spectra which are responsive to environmental stimuli. Furthermore, the sample colors (i.e., the photonic band gap positions) can be easily adjusted by manipulating the anodization parameters. The theoretical modeling results of these tin oxide photonic crystals agree well with the reported experimental ones.
- OSTI ID:
- 22305821
- Journal Information:
- Journal of Applied Physics, Vol. 116, Issue 15; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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