期刊
ELECTROCHEMISTRY COMMUNICATIONS
卷 91, 期 -, 页码 5-9出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2018.04.018
关键词
Anodic titania; Anodizing; Photonic crystals; Porous structure; Film
资金
- Russian Science Foundation [17-73-10471]
- Russian Science Foundation [17-73-10471] Funding Source: Russian Science Foundation
Photonic crystals based on titania are of great practical importance in modern photonics owing to a variety of possibilities for their applications in optoelectronics, sensorics, and solar photovoltaics. However, the reproducible, scalable, and low-cost method of the preparation of titania photonic crystals with desired optical characteristics is still absent. Here the novel anodizing regime with voltage versus electric charge modulation, U (Q), is suggested for the precise morphology control of anodic porous films of valve metals oxides. The potential of the suggested approach is demonstrated on the preparation of high-quality one-dimensional titania photonic crystals. A new type of anodic titania nanotubes possessing periodic change of inner diameter and constant outer diameter is prepared using sine-wave modulation of applied voltage with electric charge. The possibility to tune the position of photonic band gap within the whole visible spectrum is shown.
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