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Use of High Surface Area TiO2 Nanosheet in Dye-sensitized Solar Cell

Published online by Cambridge University Press:  01 February 2011

Sorapong Pavasupree ,
Supachai Ngamsinlapasathian ,
Yoshikazu Suzuki  and
Susumu Yoshikawa
Sorapong Pavasupree
Affiliation:
sorapongp@yahoo.com, Institute of Advanced Energy, Kyoto University, Molecular Assemblies Design Research Section, Gokasho, Uji, 611-0011, Japan, +81-774-38-3504, +81-774-38-3508
Supachai Ngamsinlapasathian
Affiliation:
supachai@iae.kyoto-u.ac.jp, Institute of Advanced Energy, Kyoto University, Uji, 611-0011, Japan
Yoshikazu Suzuki
Affiliation:
suzuki@iae.kyoto-u.ac.jp, Institute of Advanced Energy, Kyoto University, Uji, 611-0011, Japan
Susumu Yoshikawa
Affiliation:
s-yoshi@iae.kyoto-u.ac.jp, Institute of Advanced Energy, Kyoto University, Uji, 611-0011, Japan
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Abstract

High surface area nanosheet TiO2 with mesoporous structure were synthesized by hydrothermal method at 130 °C for 12 h. The samples characterized by XRD, SEM, TEM, SAED, and BET surface area. The nanosheet structure was slightly curved and approximately 50-100 nm in width and several nanometers in thickness. The as-synthesized nanosheet TiO2 had average pore diameter about 3-4 nm. The BET surface area and pore volume of the sample were about 642 m2/g and 0.774 cm3/g, respectively. The solar energy conversion efficiency (η) of the cell using nanorods/nanoparticles TiO2 (from the nanosheet calcined at 450 °C for 2 h) with mesoporous structure was about 7.08 % with Jsc of 16.35 mA/cm2, Voc of 0.703 V and ff of 0.627; while η of the cell using P-25 reached 5.82 % with Jsc of 12.74 mA/cm2, Voc of 0.704V and ff of 0.649.

Keywords

hydrothermalnanostructureceramic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 951: Symposium E – Nanofunctional Materials, Nanostructures and Novel Devices for Biological and Chemical Detection , 2006 , 0951-E06-30
Copyright
Copyright © Materials Research Society 2007

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References

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