TiO sub(2) nanorods branched on fast-synthesized large clearance TiO sub(2) nanotube arrays for dye-sensitized solar cells

A large clearance TiO sub(2) nanotube arrays (LTAs) has been synthesized by a not more than 12 h anodization duration and based on this a branched TiO sub(2) nanotube arrays (BLTs) has been achieved through TiO sub(2) nanorods branch-like grown on the LTAs. Some key factors and probable mechanisms o...

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Bibliographic Details
Published in:Journal of solid state chemistry 2011-11, Vol.184 (11), p.2936-2940
Main Authors: Hu, Anzheng, Li, Haina, Jia, Zhiyong, Xia, Zhengcai
Format: Article
Language:English
Subjects:
Arrays
Dyes
Nanocomposites
Nanomaterials
Nanorods
Nanostructure
Porosity
Titanium dioxide
Online Access:Get full text
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Summary:A large clearance TiO sub(2) nanotube arrays (LTAs) has been synthesized by a not more than 12 h anodization duration and based on this a branched TiO sub(2) nanotube arrays (BLTs) has been achieved through TiO sub(2) nanorods branch-like grown on the LTAs. Some key factors and probable mechanisms of the fabrication processes on two novel nanoarchitectures are discussed. Exhilaratingly, it is found that the obtained LTAs has demonstrated large pore diameter and void spaces (pore diameter ~350 nm; void spaces ~160 nm; and tube length ~3.5 mu m), and the synthesized hierarchical BLTs, compared with conventional TiO sub(2) nanotube arrays, has shown a much stronger dye absorption performance and an approximately double of the solar cell efficiency (in our case from 1.62% to 3.18% under simulated AM 1.5 conditions).
ISSN:0022-4596
DOI:10.1016/j.jssc.2011.09.005