Shell-in-shell TiO2 hollow spheres synthesized by one-pot hydrothermal method for dye-sensitized solar cell application

Wu, Xia, Lu, Gao Qing (Max) and Wang, Lianzhou (2011) Shell-in-shell TiO2 hollow spheres synthesized by one-pot hydrothermal method for dye-sensitized solar cell application. Energy and Environmental Science, 4 9: 3565-3572. doi:10.1039/c0ee00727g


Author Wu, Xia
Lu, Gao Qing (Max)
Wang, Lianzhou
Title Shell-in-shell TiO2 hollow spheres synthesized by one-pot hydrothermal method for dye-sensitized solar cell application
Formatted title
Shell-in-shell TiO2 hollow spheres synthesized by one-pot hydrothermal method for dye-sensitized solar cell application
Journal name Energy and Environmental Science   Check publisher's open access policy
ISSN 1754-5692
1754-5706
Publication date 2011-09
Sub-type Article (original research)
DOI 10.1039/c0ee00727g
Open Access Status Not Open Access
Volume 4
Issue 9
Start page 3565
End page 3572
Total pages 8
Place of publication Cambridge, United Kingdom
Publisher Royal Society of Chemistry
Collection year 2012
Language eng
Formatted abstract
A new type of shell-in-shell TiO2 hollow spheres (S@S-TiO2) featuring excellent light scattering properties were synthesized by a facile one-pot hydrothermal method followed by calcination. Various characterizations revealed that the ratio of sucrose to TiF4 in the reagents plays a key role in controlling the hollow architecture and shell thickness of the resultant S@S-TiO2 structure. The excellent light scattering property of S@S-TiO2 makes it a promising candidate for use as the scattering layer in dye-sensitized solar cells. A bilayer structured photoelectrode consisting of the S@S-TiO2 film as a scattering layer on top of the benchmark TiO2 P25 thin film exhibited an overall conversion efficiency of 9.10% under AM-1.5G one sun light intensity, in comparison with the 7.65% efficiency for a pristine P25 photoanode.

Broader context: The dye-sensitized solar cell has been intensively investigated as a promising photovoltaic system in utilizing the clean and infinite solar energy due to its high efficiency, non-toxic, and low cost nature. Light scattering structures such as hollow spheres are proposed to increase the efficiency of DSSCs by improving light harvesting. This paper presents a facile one-pot synthesis method for a new type of shell-in-shell TiO2 hollow spheres featuring excellent light scattering properties and its application in DSSCs. A 19% enhancement in DSSC efficiency is observed after introducing the shell-in-shell TiO2 hollow spheres as a scattering layer in the solar cell.
Keyword Anatase TiO2
Nanocrystalline TiO2
Conversion efficiency
Generalized synthesis
Films
Scattering
Carbon
Microspheres
Fabrication
Templates
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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Created: Sun, 25 Sep 2011, 00:13:57 EST by System User on behalf of Functional Nanomaterials