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

作者：Matsushita Sachiko^*; Hayashi Mikiro; Isobe Toshihiro; Nakajima Akira

来源：Crystals, 2012, 2(4): 1483-1491.

DOI：10.3390/cryst2041483

• photonic band diagram
• photonic band gap
• photocatalyst
• dye-sensitized solar cell
• electrochemical reaction

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 Delta omega/omega(mid) 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.

• 出版日期2012-12