Rapid preparation of TiO2-SiO2 heterostructure photonic crystal in the near-infrared region via a modified electrophoresis-assisted self-assembly process

[Display omitted] •TiO2-SiO2 heterostructure photonic crystal was rapidly fabricated.•The voltage played an important role in the electrophoresis-assisted self-assembly.•The photonic band gap of photonic crystal was in the near-infrared region.•The drawing process can accelerate the speed of self-assembling. TiO2-SiO2 heterostructure photonic crystal was rapidly fabricated by a modified electrophoresis-assisted self-assembly process. The effect of voltage on preparation and properties of TiO2-SiO2 heterostructure photonic crystal was discussed. The results of the tests show that TiO2-SiO2 heterostructure photonic crystal with different structures can be rapidly fabricated by controlling the voltage. With the increase of voltage, the TiO2-SiO2 heterostructure photonic crystal is more likely to form an ordered hexagonal array and shows a more bright and uniform color. Meanwhile, the central wavelength of the photonic band gap will be blue shifted in the near-infrared region.