Calculation and fabrication of two-dimensional complete photonic bandgap structures composed of rutile TiO2 single crystals in air/liquid

被引：7

作者：

Matsushita, Sachiko ^{[1
]}

Matsutani, Akihiro ^{[2
]}

Morii, Yasushi ^{[1
]}

Kobayashi, Daito ^{[1
]}

Nishioka, Kunio ^{[2
]}

Shoji, Dai ^{[2
]}

Sato, Mina ^{[2
]}

Tatsuma, Tetsu ^{[3
]}

Sannomiya, Takumi ^{[1
]}

Isobe, Toshihiro ^{[1
]}

Nakajima, Akira ^{[1
]}

机构：

[1] Tokyo Inst Technol, Grad Sch Sci & Technol, Dept Met & Ceram Sci, Meguro Ku, Tokyo 1528552, Japan

[2] Tokyo Inst Technol, Semicond & MEMS Proc Ctr, Tech Dept, Midori Ku, Yokohama, Kanagawa 2268503, Japan

[3] Univ Tokyo, Inst Ind Sci, Meguro Ku, Tokyo 1538505, Japan

来源：

JOURNAL OF MATERIALS SCIENCE | 2016年 / 51卷 / 02期

基金：

日本学术振兴会;

关键词：

SENSITIZED SOLAR-CELLS; PHOTOCHEMISTRY; EFFICIENCY; PHOTOELECTRODES; ENHANCEMENT; TEMPERATURE; DEPENDENCE; DESIGN; LIGHT;

D O I：

10.1007/s10853-015-9436-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Photoelectrochemical applications of photonic crystals are gathering great interests both from physicists and chemists. Here, we theoretically and experimentally present two-dimensional photonic bandgap (2D-PBG) structures based on rutile titanium dioxide (TiO2) single crystal that is a famous material because of the photoelectrochemical ability. The structures were the arrays of hollow hexagonal rutile TiO2 pillars in contact with air or a typical nonaqueous electrolyte solution, acetonitrile. Since the TiO2 refractive indices exhibit a strong dispersive behavior, the bandgap width was discussed from the viewpoint of the refractive index map that would be helpful for the real application of this structure. The 2D-PBG structures for both infrared light and visible light were fabricated by our established lithography technique for rutile TiO2 with and without Nb doping, i.e., photocatalytic TiO2 and high electron conductive TiO2, respectively. These structures show characteristic absorbance peaks or reflectance dips at wavelengths predicted by our theoretical calculations.

引用

页码：1066 / 1073

页数：8

共 39 条

[31] Enhancement of optical absorption by modulation of the oxygen flow of TiO2 films deposited by reactive sputtering [J].