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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
Source: Scientific reports, 2014, v. 4, 6442
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.
Publisher: Nature Publishing Group
Journal: Scientific reports 
EISSN: 2045-2322
DOI: 10.1038/srep06442
Rights: © The Author(s)
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit
The following article Guo, M., Xie, K.,Wang, Y., Zhou, L. & Huang, H. Aperiodic TiO2 Nanotube Photonic Crystal: Full-Visible-Spectrum Solar Light Harvesting in Photovoltaic Devices. Sci. Rep. 4, 6442; DOI:10.1038/srep06442 (2014) is available at
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