Simulation Design for Rutile-TiO2 Nanostructures with a Large Complete-Photonic Bandgap in Electrolytes

Abstract

The photonic bands of various TiO2 2D photonic crystals, i.e., cylindrical, square and hexagonal columns connected with/without walls and filled with acetonitrile, were investigated from the perspective of dye-sensitized solar cells. The finite-difference time-domain methods revealed that two-dimensional (2D) photonic crystals with rods connected with walls composed of TiO2 and electrolytes had complete photonic band gaps under specific conditions. This optimally designed bandgap reaches a large Δω/ωmid value, 1.9%, in a triangular array of square rods connected with walls, which is the largest complete 2D bandgap thus far reported for a photochemical system. These discoveries would promote the photochemical applications of photonic crystals

TiO₂ Periodic Structures Fabricated via Top-down and Bottom-up Approaches with a Viewpoint of Photonic Crystal

“…5a). 36 The photonic band diagram of hexagonal 2D-PBG array of hollow hexagonal rutile TiO 2 pillars composed of air and liquid were displayed in Fig. 5.…”