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Crystals 2012, 2(4), 1483-1491; doi:10.3390/cryst2041483

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

Department of Metallurgy & Ceramics Science, Graduate School of Science & Technology, Tokyo Institute of Technology 2-12-1-S7-8, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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Received: 4 April 2012 / Revised: 9 October 2012 / Accepted: 10 October 2012 / Published: 26 October 2012
(This article belongs to the Special Issue Current Trends in Application of Photonic Crystals)
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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. View Full-Text
Keywords: photonic band diagram; photonic band gap; photocatalyst; dye-sensitized solar cell; electrochemical reaction photonic band diagram; photonic band gap; photocatalyst; dye-sensitized solar cell; electrochemical reaction
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Matsushita, S.; Hayashi, M.; Isobe, T.; Nakajima, A. Simulation Design for Rutile-TiO2 Nanostructures with a Large Complete-Photonic Bandgap in Electrolytes. Crystals 2012, 2, 1483-1491.

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