Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/14046
Title: Aperiodic TiO2 nanotube photonic crystal : full-visible-spectrum solar light harvesting in photovoltaic devices
Authors: Guo, M
Xie, K
Wang, Y 
Zhou, L 
Huang, H 
Issue Date: 2014
Publisher: Nature Publishing Group
Source: Scientific reports, 2014, v. 4, 6442 How to cite?
Journal: Scientific reports 
Abstract: Bandgap engineering of a photonic crystal is highly desirable for photon management in photonic sensors and devices. Aperiodic photonic crystals (APCs) can provide unprecedented opportunities for much more versatile photon management, due to increased degrees of freedom in the design and the unique properties brought about by the aperiodic structures as compared to their periodic counterparts. However, many efforts still remain on conceptual approaches, practical achievements in APCs are rarely reported due to the difficulties in fabrication. Here, we report a simple but highly controllable current-pulse anodization process to design and fabricate TiO2 nanotube APCs. By coupling an APC into the photoanode of a dye-sensitized solar cell, we demonstrate the concept of using APC to achieve nearly full-visible-spectrum light harvesting, as evidenced by both experimental and simulated results. It is anticipated that this work will lead to more fruitful practical applications of APCs in high-efficiency photovoltaics, sensors and optoelectronic devices.
URI: http://hdl.handle.net/10397/14046
EISSN: 2045-2322
DOI: 10.1038/srep06442
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