Cubic titanium dioxide photoanode for dye-sensitized solar cells

Title
Cubic titanium dioxide photoanode for dye-sensitized solar cells
Author(s)
강미숙채진호[채진호]
Keywords
ANATASE TIO2 NANOCRYSTALS; HYDROGEN-PRODUCTION; TEMPERATURE; PERFORMANCE; ELECTRODES; EFFICIENCY; MORPHOLOGY; SCATTERING; CONVERSION; PARTICLES
Issue Date
201104
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF POWER SOURCES, v.196, no.8, pp.4143 - 4151
Abstract
Following from the recently evolved concept of significantly improving the photovoltaic efficiency in dye-sensitized solar cells (DSSCs) by reducing the loss of electrons on the spherical surface of titanium dioxide, this study examines the synthesis of cubic TiO(2) with a special morphology to overcome this electron loss and investigates its application to DSSCs. Cubic TiO(2) is synthesized by an advanced rapid hydrothermal method, with the addition of an amine species additive. Transmission electron microscopy (TEM) images confirm the cubic shape of the TiO(2) particles with a diameter less than 5-10 nm. Using N719 dye under illumination with 100 mW cm(-2) simulated sunlight, the application of cubic TiO(2) to DSSCs affords an energy conversion efficiency of approximately 9.77% (4.0-mu m thick TiO(2) film), which is considerably enhanced compared with that achieved using a commercial, spherical TiO(2). Electrostatic force microscopy (EFM) and impedance analyses reveal that the electrons are transferred more rapidly to the surface of a cubic TiO(2) film than on a spherical TiO(2) film. (C) 2011 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/25404http://dx.doi.org/10.1016/j.jpowsour.2010.12.109
ISSN
0378-7753
Appears in Collections:
이과대학 > 화학생화학부 > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE