Log-Pile TiO2 Photonic Crystal for Light Control at Near-UV and Visible Wavelengths

Log-Pile TiO2 Photonic Crystal for Light Control at Near-UV and Visible Wavelengths

Three‐dimensional photonic crystals with an omnidirectional bandgap at visible frequencies can have significant impact on solid‐state lighting and solar‐energy conversion. Using a procedure based on multistep electron‐beam lithographic processing, a 9‐layer log‐pile photonic crystal is fabricated co...

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Bibliographic Details
Published in:Advanced materials (Weinheim) Vol. 22; no. 4; pp. 487 - 491
Main Authors: Subramania, Ganapathi, Lee, Yun-Ju, Fischer, Arthur J., Koleske, Daniel D.
Format: Journal Article
Language:English
Published: Weinheim WILEY-VCH Verlag 26-01-2010
WILEY‐VCH Verlag
Subjects:
Crystallization
Light
lithography
nanostructures
photonic crystals
Spectrophotometry
Titanium - chemistry
titanium dioxide
Ultraviolet Rays
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Summary:Three‐dimensional photonic crystals with an omnidirectional bandgap at visible frequencies can have significant impact on solid‐state lighting and solar‐energy conversion. Using a procedure based on multistep electron‐beam lithographic processing, a 9‐layer log‐pile photonic crystal is fabricated composed of 70‐nm‐wide titanium dioxide rods with 250‐nm lattice spacing that exhibit a stacking direction bandgap between 400 nm and 500 nm (see image).
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ISSN:0935-9648
1521-4095
DOI:10.1002/adma.200902264