Deliberate design of TiO2 nanostructures towards superior photovoltaic cells

Sun, Ziqi, Liao, Ting, Sheng, Liyuan, Kou, Liangzhi, Kim, Jung Ho and Dou, Shi Xue (2016) Deliberate design of TiO2 nanostructures towards superior photovoltaic cells. Chemistry - A European Journal, 22 32: 11357-11364. doi:10.1002/chem.201601546


Author Sun, Ziqi
Liao, Ting
Sheng, Liyuan
Kou, Liangzhi
Kim, Jung Ho
Dou, Shi Xue
Title Deliberate design of TiO2 nanostructures towards superior photovoltaic cells
Formatted title
Deliberate design of TiO2 nanostructures towards superior photovoltaic cells
Journal name Chemistry - A European Journal   Check publisher's open access policy
ISSN 1521-3765
0947-6539
Publication date 2016-08-01
Sub-type Article (original research)
DOI 10.1002/chem.201601546
Open Access Status Not yet assessed
Volume 22
Issue 32
Start page 11357
End page 11364
Total pages 8
Place of publication Weinheim, Germany
Publisher Wiley - V C H Verlag GmbH & Co. KGaA
Language eng
Abstract TiO2 nanostructures are being sought after as flexibly utilizable building blocks for the fabrication of the mesoporous thin-film photoelectrodes that are the heart of the third-generation photovoltaic devices, such as dye-sensitized solar cells (DSSCs), quantum-dot-sensitized solar cells (QDSSCs), and the recently promoted perovskite-type solar cells. Here, we report deliberate tailoring of TiO2 nanostructures for superior photovoltaic cells. Morphology engineering of TiO2 nanostructures is realized by designing synthetic protocols in which the precursor hydrolysis, crystal growth, and oligomer self-organization are precisely controlled. TiO2 nanostructures in forms varying from isolated nanocubes, nanorods, and cross-linked nanorods to complex hierarchical structures and shape-defined mesoporous micro-/nanostructures were successfully synthesized. The photoanodes made from the shape-defined mesoporous TiO2 microspheres and nanospindles presented superior performances, owing to the well-defined overall shapes and the inner ordered nanochannels, which allow not only a high amount of dye uptake, but also improved visible-light absorption. This study provides a new way to seek an optimal synthetic protocol to meet the required functionality of the nanomaterials.
Formatted abstract
TiO2 nanostructures are being sought after as flexibly utilizable building blocks for the fabrication of the mesoporous thin-film photoelectrodes that are the heart of the third-generation photovoltaic devices, such as dye-sensitized solar cells (DSSCs), quantum-dot-sensitized solar cells (QDSSCs), and the recently promoted perovskite-type solar cells. Here, we report deliberate tailoring of TiO2nanostructures for superior photovoltaic cells. Morphology engineering of TiO2 nanostructures is realized by designing synthetic protocols in which the precursor hydrolysis, crystal growth, and oligomer self-organization are precisely controlled. TiO2 nanostructures in forms varying from isolated nanocubes, nanorods, and cross-linked nanorods to complex hierarchical structures and shape-defined mesoporous micro-/nanostructures were successfully synthesized. The photoanodes made from the shape-defined mesoporous TiO2 microspheres and nanospindles presented superior performances, owing to the well-defined overall shapes and the inner ordered nanochannels, which allow not only a high amount of dye uptake, but also improved visible-light absorption. This study provides a new way to seek an optimal synthetic protocol to meet the required functionality of the nanomaterials.
Keyword Nanostructure
Self-assembly
Solar cells
Surfactant
Titanates
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
Australian Institute for Bioengineering and Nanotechnology Publications
 
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