Electrochemical fabrication and optical properties of porous tin oxide films with structural colors

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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  • Hua Cheng
  • Shiwei Shu
  • Zhouguang Lu
  • Chris Lee


Original languageEnglish
Article number153511
Journal / PublicationJournal of Applied Physics
Issue number15
Publication statusPublished - 21 Oct 2014


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.